SPECIFICATION NO : RDSO/SPN/TC-51/2011 REV.2.0

STATUS : PART-I

Centrallised Power Supply, eliminates power supplies at Gates thus enables Easy Maintenance.

Privacy of conversation

Cost Effective

The Master Telephone Unit as per Rev.2 has Voice Logging Facility working on 24V/12V DC supply or 48VDC available from OFC Hut.
This unit is meant for Monitoring and Recording of all events Chronologically.
This unit is arm processor based with Solid State Disc and shall have its own Real Time Clock. (GPS Based Clock - Optional).

• Time, Date, Year

• Station ID

• Calling / Called number in the ASM Cabin.

• Called / Received Time and Duration.

• Recording of events chronologically.

Shall have provision to store minimum 200 hours of conversation on 8GB SSD.

Built-in Speaker for listening recording of calls or live call monitoring.

Automatic recording of all events occurring in the Master Telephone.

Facility to replay last call by pressing one key.

USB Cable Socket and interfacing to PC.

Wave file auto copying facility.

Application Software Installation CD provided.

User interface key pad for assigning Station ID, correction of date / time etc.

Well engineered dust free Master Unit.

Current Consumption : Idle : 150 mA, During Speech : 250 mA, Ringing / Recording : 350 mA maximum.

SPECIFICATION NO : IRS:TC-83/2007

STATUS : PART-I

As per the Specification Clause No: 3.0

The Way Side Telephone consists of

1. Desk Type Telephone
2. Power Supply-Cum-Charger
3. M.F. Battery of 12V, 7AH
4. 6 Pin Plug

Assembled in a Wooden Box and this weights over 7.5 Kgms. As per the field user’s report it is too heavy to carry and they expressed that this should be of light weight.
Keeping Customer Satisfaction on priority our R & D team developed a Light Weight Telephone working on 3Vdc with a Lithium-Iron Battery of 3.6Vdc, 900 mAH with a suitable Charger working on 100-300VAC, 50Hz. The Battery can be used for 20 hours continuously on full charge. The performance of the Samples are tested and found to be meeting all the parameters as per the above Specification.
The weight is around 900 gms. including the Charger, 6 Pin Plug and carrying Pouch.

WEIGHT :900 Gms. (Approx.)

SPECIFICATION NO : IRS:TC-83/2007

STATUS : PART-I

This Push Button Magneto Telephone is similar to the Rotating Type Magneto Telephone, but the Ring Generator is Electronic and appears across the Lines as along as the ‘Press To Call’ (PTC) button is pressed.
It works on 6VDC supply from 6V, 1.2 AH Ni-Mh Battery provided inside and a charger working on 100 - 300VAC, 50 Hz. Provision is given in the Rosette Box to connect external 6VDC

SCOPE :
The Push Button Magneto Telephone Model MTI 201 is used for Point to Point Communication for a distance of 10 Kms., when the diameter of copper conductor is 1.5 mm Sq.
CONSTRUCTION :
The Telephone is Desk Type, housed in ABS (Acrylonitrile Butadiene Styrene) Plastic Moulded Body (Cover and Base) and Handset.
It has Electro Dynamic Transducers for Transmitter and Receiver.
It has Coiled Cord and Straight Cord, a Rosette Box for connecting Line and external Power Supply (if required).
The Ring Generator, Ringer, Induction Coil and other Speech Circuitry are wired in a PCB of 1.6mm thick FRP Printed Circuit Board. A standard hook (Cradle) Switch provided disconnects the incoming Ringing Voltage when lifted. To call the handset has to be on the hook.
A Press to Call (PTC) Switch is provided on the top for Calling and a Press to Talk (PTT) Switch is provided in the handset.
TECHNICAL :
(1) Ring Generator :
Frequency : 25 ± 5Hz
Output : 60VAC max.
(2) Speech :
Tx : 0dB across Lines
Rx : -12dB
POWER SUPPLY :
The Telephone works on 6V DC supply from a 6V, 1.2 AH Ni-MH Battery provided inside.
A Socket is provided at the back of the Telephone Body to connect a charger working on 100-300VAC, 50Hz. A hinged metal door is provided on the top of the Telephone to replace the Battery as and when required. The external voltage connection provided in the Rosette Box can accept a maximum of 6V DC only.
CONSUMPTION :
Idle : 3mA
Conversation : 15mA
Ringing : 300mA
INSTALLATION
(1) Open the Rosette Box and connect L1, L2 between one phone and the other.
(2) Open the cover of each Battery Box on top cover and slide on ‘ON’ the Switch provided inside the compartment.
(3) The Power ON LED shall glow. Replace the cover.
(4) Press the Call Button and ensure that the other phone is ringing. All this time, the calling handset has to be on the hook.
(5) The Charger can be connected as and when the Battery Voltage is low. The Charger has a LED which goes off when the Battery is fully Charged.

SPECIFICATION NO : RDSO/SPN/TC-51/2011 REV.2.0

STATUS : PART-I

1. LCD & Keypad Description
The new Electronic LC Gate Telephone System – Station Telephone Unit consists of a User Interface with one LCD and Keypad. The details of these parts are shown below.
a) 2-Line, 16-Character LCD

The LCD used here is an alphanumeric character display with two lines of 16 characters each.
b) Keypad

• The Keypad consists of 6 keys and two LEDs. Out of six keys, four are direction keys – UP, DOWN, LEFT and RIGHT. The other two keys are ENTER and ESCAPE.

• The LEFT and RIGHT keys are used to select the position of cursor. These are enabled for time, date and station ID setting operations.

• The UP and DOWN keys are used to scroll through the menu items and also to edit the alphanumeric characters in time, date and station ID setting operations.

• The ENTER key is used to select an operation displayed on Line 2 of the LCD.

• The ESCAPE key is used to come out of the menu or discard any operation in progress.

One LED is used to acknowledge the key press on the keypad. It blinks momentarily once a key is detected.
The other LED is used to indicate the clock running state by toggling the LED for every 1 second.

2. Idle State

The LCD when ‘idle’ displays Date and Time on the Line1 and Station Id on Line 2. An example display is given below.

Note: Station Id is a 16-character string consisting of 16 alphanumeric characters without any spaces in between. The same string is used in audio record file naming.

When display is ‘idle’ state, it displays the call progress messages on Line2 and returns to ‘Station Id’ display when there are no calls in progress. Sample displays are shown below.

The other strings that are displayed for other call states are:

"Calling ALL... "
"ALL Disconnected"
"Answered Gate x ", and
"Gx Call Ended ".

3. Main Menu

The following are five main menu items available for user.

"'Play Voice File"
"'Set Station ID "
"'Set Time "
"'Set Date "
"'Copy all to USB"

Note: Please note that all main menu items are preceded by an apostrophe symbol as first character.

4. Playback of Voice Record

• When display is idle, press “ENTER” key to enter into main menu display on Line2.
• Use “UP” or “DOWN” key to scroll through the main menu items on Line2. The menu items given above will be displayed one after the other on Line2 for user selection.
• Use “ENTER” to select the current main item displayed on Line2.

Note: Press “ESC” key to come out of main menu and to set display idle.

When Line2 of the display is showing “’Play Voice File” press ENTER key to enter into playback menu. User will be given the following two options based on the state of the operation.

NOTE: Please make sure that speaker is switched ON for playback.

When at least one call is recorded from the time the unit is powered ON (or reset), the option to play latest record also will be given to the user. Else, it allows only selecting stored records. When display is showing “Play latest rec?”, pressing the ENTER key triggers the playback of the latest recorded voice file. The display will be as shown below during playback.

NOTE: Pressing ESC key will terminate the playback of voice record.

When “Play stored rec?” option is selected, it starts from displaying the first record/file name from the stored voice records. The filename is displayed without station Id as shown below. When ENTER key is pressed, the displayed file is selected for playback and the display will be as shown below

NOTE: If there are no voice records available, the same will be informed to the operator as “No files found!”.
NOTE: The voice records/files are stored in the WAV file format with the following filename

format: <Station Id>_YYYYMMDD_HHMMSS_<In/Out>_G<a/1/2/3/4/5/6>
Ex.: LucknowLCGate1_20120729_102348_Out_G2

Once the playback of selected file is done, it will display the “Done!” as shown below.

Then operator is allowed to select next file from the list of files available in the unit.

NOTE: Pressing ESC key will terminate the playing back of voice record.
NOTE: If there is any Incoming/Outgoing call initiate during playback, the playback will be terminated immediately.

If there are no more files to display, the display shows “End of records!!”.

5. Setting Station ID

Press ENTER key when Line2 of the display as above, to set/edit the station identification. It shows the current station id of the unit and allows user to edit each position/character of the Line2.

The cursor is shown as blinking character (or as a block for space). The cursor position can be selected using LEFT or RIGHT keys. The character at cursor position can be changed by pressing UP or DOWN keys. Only alphanumeric characters and “space” are allowed in the following sequence.
0, 1, 2,.. 9, A, B, C, …. X, Y, Z, a, b, c, …. x, y, z and “space”
Once entry/editing is done for the required station id, it can be set by pressing ENTER key. The new id will be used for voice filenames and also for display in idle state.
NOTE: No spaces are allowed in the Station Id. Only characters before the first space are taken as station id.
NOTE: The station id can be maximum 16 alphanumeric characters.

6. Setting Time

Press ENTER key when Line2 of the display as above, to set/edit the unit time. It displays the current time of the internal real time clock (RTC) of the unit. Then, the user is allowed to edit the time as shown below.

NOTE: Time is always in 24-Hour format.

Use LEFT and RIGHT keys to select the digit to edit. The cursor is shown as blinking character. Use UP and DOWN keys to select a number from 0 to 9. Once the required time is entered, press ENTER to set the internal RTC time with this value. The same will be displayed on the display during Idle State of the display.

7. Setting Date

Press ENTER key when Line2 of the display as above, to set/edit the unit date. It displays the current date of the internal real time clock (RTC) of the unit. Then, the user is allowed to edit the date as shown below.

8. Copying Voice Records to USB Pen Drive

Press ENTER key when Line2 of the display as above, to initiate copy of internal voice records to a USB memory device. First it tries to detect the USB device, if plugged in the USB-A receptacle connector provided at the rear side of the station telephone unit. During this process the display shows the status as below.

There may be no device available or not a memory device with FAT file system. If a valid device is detected, it starts copying internal WAV files one by one to the device. The display shows these states as shown below.

During successful copying of files, it shows the file numbers that are being copied to USB device. Once copying of all files is done it gives confirmation and asks to remove the USB device from the connector as shown below. If copying is interrupted by an incoming/outgoing call, the same will be informed to the user as shown below.

NOTE: Please make sure that USB Pen drive is formatted with FAT file system and sufficient free memory is available for the copy of voice records.

SPECIFICATION NO :IRS:TC-60/2007

STATUS : PART-I

GENERAL
The Station Master uses several Telephones for different communications for the purpose of smooth Train Traffic Movement in a Station. Practically, it becomes tedious to attend to the Telephones spread over the Station Master’s Table.
The Station Master Control Console using Micro Controller, designed and developed by EPSILON enables easy and convenient operations by the Station Master / Assistant Station Master.
This Unit enables communication in :

A. 4 WIRE MODE (IRS:TC-60/2007)
I Section Controller
II Traction Power Controller
III Traction Loco Controller
IV Other Controller
by pressing the designated Push Button Switch out of the 4 Controllers.

B. 2 WIRE MODE (IRS:TC-80/2000) OR (IRS:TC-79/2000)
For Point to Point Communication between:
(i) Station Master & Assistant Station Master
(ii) Station Master / Assistant Station Master and LC Gate
(iii) Station Master / Assistant Station Master and Yard/ Maintenance etc.
A 4 x 3 matrix keypad is provided for selecting the required Slave.

C. AUTO MODE
Keep the Push Button Switch provided on the Front Panel for selecting the BSNL or RLY. The Station Master also can talk to Auto Telephone Railway and DOT by pressing the Push Button marked RLY/DOT and provided on the Front Panel and by dialing the desired number.
When a Call is received from any Auto Telephone, the respective LED shall glow. The Station Master can press the respective Push Button Switch and attend the Call.
The Unit shall consists of the following :
1. One Handset with Press to Talk (PTT) Switch to be used only in 4 Wire Mode, kept on the left hand side of the unit. Another Handset for use with 2 Wire Intercom or Auto Telephones kept on the right hand side of the unit.
2. Cradle Switches.
3. 4 Nos. of Push Button Keys for Communication between Station Master and Controllers marked CONTROL I to CONTROL IV with LED indication provided beside.
4. 5 Nos. of DC Buzzers and 2 Nos. of AC Ringers.
5. Keypad (3 x 4 matrix) for the Selective Calling Telephone and Auto Telephone.
6. A Push Button Switch to select 2 Wire Intercom or Auto Telephone.
7. Two Push Button Switches for connecting to Auto Telephone. Two LEDs by the side of this Switch indicates connection to Auto Telephone.
8. A Push Button Switch to select up or down.
9. A Ringer Circuit with Ringer for ringing in case the Station Master is called on the Auto Telephone.

OPERATION :
4 WIRE MODE :
The Station Master can call any of the 4 Controllers by pressing the assigned Push Button (Enabling) and by pressing the Press to Talk Switch in the handset, the Station Master can converse with the called Controller. After conversation, he can press the same Push Button Switch again to disconnect (Disabling). Similarly when a Controller calls the Station Master, the designated LED shall flash and the Buzzer shall hoot. The Station Master has to press the called Push Button Switch to receive the Call, the Buzzer shall stop, LED shall change from flash to steady. Press the Press to Talk Switch and the conversation shall be through.
At a time only one Controller can talk to the Station Master.
When another Controller calls the Station Master, when the Station Master is already in conversation with the first Controller, the Caller’s LED shall flash and the buzzer shall hoot. The Calling Controller shall get the ring back tone. In case the Station Master feels that the call of the Second Controller is important, he should press the Push Button of the first Caller to disable and then press the Calling Controller’s Push Button Switch for communication. After the conversation the same Push Button shall be pressed again for disabling. Similarly the Station Master can have communication with any of the 4 Controllers, using only one Telephone Handset.
The 6 Wires coming from the 4 Nos. of 4 Wire Decoders are terminated inside the Unit as per the Standard Wiring for Cradle Switch /+12, -12V / MIC / REC / BUZ / PTT / LED.
Thus this Unit replaces 4 Control Telephones as per IRS:TC-38/97.
2 WIRE MODE : Press the Push Button Switch to 2 WIRE
The functions are same as Desk Type 2 Wire / 12 Way Selective Calling Telephone as per IRS:TC-80/2000 or Electronic Magneto Telephone as per IRS:TC-79/2000. In this case the Press to Talk Switch need not be pressed for talking. However after conversation the Handset should be kept on the ‘Cradle to disconnect or press the Cradle Switch manually to disconnect’. The LED provided and a Buzzer shall be activated when any of the Slave Telephone calls the Station Master. Press * for Selective Calling or Press # for Magneto.

AUTO MODE :
Whether the Push Button Switch is in AUTO Mode and when the Push Button Switch marked RLY or DOT is pressed, the Station Master gets connected to the respective Auto Telephone. AC Ringer and an LED provided in the Unit shall ring and the LED shall glow whenever there is a Call from the Auto Telephone. To attend the Call, the Station Master has to press the Push Button Switch marked ‘AUTO’. After the conversation, the Station Master has to press the Push Button Switch again to normal position. In case the Station Master wants to call any Auto Telephones, he has to press the Push Button Switch marked RLY or DOT and dial the desired number using the Keypad Switch. He can set the Push Button Switch to 2 Wire or Auto Mode as per the requirement.
FOR BETTER CONVENIENCE OF OPERATION, OUR FINAL DESIGN IS IN 2 PARTS FOR 4 WIRE AND 2 WIRE AND AUTO MODES.
D. DIGITAL CLOCK - 6 Digit LED Type RTC/GPS Based.
This shall indicate the time based on Real Time or GPS.
The Station Master Control Console works on 12VDC and the maximum current consumption shall be 600m Amps.
As per latest version, the 2 WIRE MODE is kept as a separate unit with UP and DOWN Calling Indication.

SPECIFICATION NO : IRS:TC:22/1976

STATUS : PART-I

The Voice Frequency and V.F Signalling Transformers manufactured by Epsilon are used for derivation and termination of Underground Telecommunication Cable Circuits.

The Side Circuits of the paper insulated V.F Quads, which are loaded are used for the transmission of Speech of the unloaded phantom for derivation and termination of Underground Telecommunication Cable Circuits. The side circuits are used for transmission of interrupted 50 Hz rising current for Signaling.

The Transformers are manufactured in four types as follows :-

Other Impedance Ratio are also available on request, such as 470 : 470, 470 : 600, 600 : 600.
Each Transformer is housed in the metallic case filled with insulating compound and is hermetically sealed, to withstand extreme weather conditions. Terminals are taken out on the top of the transformer case through proper feed through terminals.

WEIGHT : 0.800 Kgs. (Approx.)

RDSO DRAWING NO : TCA - 15201 (ADV)

STATUS : PART-I

The V.F Transformer Bay manufactured by EPSILON is used in the communication line of Railway Electrification area to ensure systematic installation of V.F Transformers for use in various circuits.

The V.F Transformer Bay houses up to 54 Transformers. All the Types of Transformers, namely V.F Tapping, Terminating and Signalling Transformers are housed in this Bay as per the requirements in the Circuit. Krone Type Connectors are provided for Wiring Incoming / Outgoing Cables.

Link Panels are used for establishing Isolation / Connection on the lines in the Section. Integrated Line Protection Circuits are provided for each Quad.

The Bay is constructed out of M.S. Steel Sheets complete with 5 Rows of Link Panels, Aluminum Sections for mounting the transformer and copper earthing strip. It is of sturdy construction and ensures compactness. The doors are made with reinforcement to avoid tilt. Grommets are provided for cable entries. Copper Strip is provided for earthing.

Link Panels are as per ITI Specifications DE 224008/A. Links as per ITI Spec. No. BL/57279 are also supplied along with the Bay. Brackets are also provided for cable harnessing.

WEIGHT : 75 Kgs. (Approx.) for all Quads

DIMENSIONS AND WEIGHTS : Shall vary as per Number of Quads

RDSO DRAWING NO : IRS:TC-76/2000stem

STATUS : PART-I

The 2T / 3T Transformer Joints are used for Termination and Derivation of the Circuits for PET Unloaded PIJF 4 Quad Cables.

Two Transformers are assembled inside a brass tube with flying leads taken out through the marked holes in the covers. The assembly is filled up with epoxy compound and then hermetically sealed. This joint is meant to be used with thermo shrinkable sleeves.

The Transformers are manufactured in Five Types as per the Impedance Ratio required :

1. 470     : 1120
2. 1120   : 1120
3. 1120   : 600
4. 470     : 470
5. 470     : 600

Each Type has been designed to have a very good insulation between the windings and also between the windings and the case. They can easily withstand a voltage of 2KV (r.m.s) 50 Hz between the windings and the case.

WEIGHT: 0.400 Kgs. (Approx.)

CONFORMING TO : IRS:TC:29/81 (88 mH OR 118 mH)

STATUS : PART-I

The Loading Coil Joint manufactured by EPSILON consists of four numbers of Loading Coils of 88 mH OR 118 mH assembled inside a brass tube for loading of 4 Quad Cables.

The coils are potted with epoxy compound and lid is sealed after taking the leads for wiring. This joint is meant for use with thermo shrinkable sleeves.

WEIGHT : 0.600 Kgs. (Approx.)

SPECIFICATION NO : IRS:TC:75/99 (Amendment No.2)

STATUS : PART-I

The Portable Emergency Control Telephone manufactured by EPSILON is a part of the 4 Wire / 2 Wire Emergency Train Traffic Control System.

This Telephone provides inter communication between any Way Side point along the train route and the Controller. This can be connected through 6 Pin Socket located along the Railway Track in 4 Wire Side and 2 Wire Side.

The Telephone has ‘Trans’ and ‘Receive’ Speech Circuits. The Telephone works on 3V DC with the aid of 2 Nos. of 1.5V dry cells. The entire Circuit, HMT and the Battery container are housed inside the M.S. Body provided with shoulder strap for ease of use. With the aid of a Switch, this Telephone can be selected for 2 Wire or 4 Wire operation.

It is provided with a 6 Pin Plug.

WEIGHT : < 2.5 Kg. (Approx.)

EMERGENCY PORTABLE CONTROL TELEPHONES (2 WIRE AND 4 WIRE)

SPECIFICATION NO : IRS:TC:78/2000 (Amendment No.1)

STATUS : PART-I

The Light Weight Portable Control Telephone, which was first enclosed in ABS Plastic Moulded Box by EPSILON, is a part of the 4 Wire / 2 Wire Emergency Train Traffic Control System.

The Telephone provides inter communication between any Way Side point along the train route and the Controller with 4 Wire / 2 Wire PECT. This Telephone can be connected through 6 Pin Socket located along the Railway Track in 4 Wire Side or 2 Wire Side.

The Telephone has ‘Trans’ and ‘Receive’ dry cells. With the aid of a Switch, the Battery is connected to the Circuit and with the aid of another Switch, this Telephone can be selected for 2 Wire or 4 Wire operation.

WEIGHT : < 0.5 Kg. (Approx.)

SPECIFICATION NO : IRS:TC:83/2007(Amendment No.1)

STATUS : PART-II

The System is capable of connecting RAILWAY Exchange and DOT Exchange by pressing the designated button from the Way Side Telephone through the Base Unit in the Test Room.

Way Side Telephone will work similar to Auto Telephone and becomes either Subscriber of RAILWAY Exchange by pressing * or DOT Exchange by pressing # connection is achieved automatically.

The Auto Dialing System consists of a Base Unit with CPU (Central Processing Unit) and interface unit consisting of 4 Wire / 2 Wire conversion and amplification circuitry, for networking between RAILWAY Telephone Exchange, DOT Telephone Exchange and RAILWAY OMNIBUS / Way Side Equipment in RE area. The “BASE UNIT” is installed in the Test Room which can monitor the conversation.

This System consists of 2 Parts :

WEIGHT : 14.0 Kgs. (Approx.)

SPECIFICATION NO : IRS:TC:42/87 (Amendment Slip No.1)
BOX - Conforming to RDSO DRG. NO. TCA-20060 (ADV)

STATUS : PART-I

EPSILON manufactures Six Pin Plug and Socket used for 4 Wire Communication on Emergency Control Circuits from the points provided for this purpose along the side of the Track in AC electrified areas. These are made of Polycarbonate Plastic (unbreakable).

Socket shall be fixed in the Socket Box which is also manufactured by EPSILON. The Socket shall be wired to the Trans Receive of the Emergency Control Circuit, derived from the main cable through Transformer Joint.

The Socket Box is of 2 Types :

WEIGHT : Socket Box Mild Steel - 1 ½ Kgs. (Approx.) & ABS Plastic - 0.200 Kgms (Approx.)

SPECIFICATION NO : IRS:TC:79/2000 (Amendment No.2)

STATUS : PART-I

Electronic Magneto Telephone manufactured by EPSILON is an extended version of Magneto Telephone having additional feature of One Push Button Calling in place of Hand Generator. It is possible to interface this Telephone with Microwave and Optical Fibre System. It can be used for point to point communication between Cabin ASMs of a yard, Cabin to Level Crossing Gates and between Two Level Crossing Gates etc.

The Circuit works on 3V DC source 2 Nos. Dry Battery Type R - 20 to IS : 8144 to be used. A Battery compartment is provided on the front of the Telephone, with a hinged cover and screw.

WEIGHT : < 1.0 Kg. (Approx.)

SPECIFICATION NO : IRS:TC:80/2000 (Amendment No.1)

STATUS : PART-I

EPSILON Make Selective Calling Equipment is used for operation on overhead cable, microwave or fibre optic link. This is electronic extended version of Magneto Telephone having additional features of 4 x 3 Push Button Matrix for Calling 11 Station in 12 Way DTMF Telephone. It can also be used as an intercom between the parties. Any one can be designated as Master and others as Slave.

The Selective Calling Equipment is designed with advanced digital circuitry techniques. This System will generate DTMF Code for Signalling the distant station as per CCITT Standards. It is possible to assign a maximum of 10 Station Codes. Ring back tone is available to the Calling Station on the reception of assigned Code and communication with called station is established through the handset provided. Every Telephone shall be assigned a distinct calling code. It shall be possible to send the Signalling code even when two or more parties are in conversation.

WEIGHT : < 1 Kg. (Approx.)
Power Supply Unit (2 Amp. OR 1 Amp.) shall be supplied with Maintenance Free Battery of 12V/7AH
Battery ****** OR ********.
Power Supply 230V / 12V DC 0.2 Amp. regulated supply without battery.

SPECIFICATION NO : RDSO/SPN/TC/51/2009 (Rev.1.0)

STATUS : PART-II

The Electronic Level Crossing Gate Telephone features include :

• Communication and Selective Calling between Station Master and Level Crossing Gates, with confidentiality in Speech.
• 6 Gates can be connected to One ASM in Omnibus Mode.
• Works up to 8 Km distance over 0.9mm dia Cu Cable.
• Works as Electronic Magneto without any Battery at Gates, i.e. no Power Supply Unit / Battery required at Gates.
• Power and Signal through the same cable pair.
• Only One Power Supply System at ASM Office.
• Power Supply Unit Cum Charger with outputs of 24V DC and 12V DC, having Maintenance Free Battery of 24V, 7AH , where the 12V Output is used for the Master Telephone and 24V Output is used for the Slave Telephones wired through L1, L2.

WEIGHT : 2.5 Kgs. (Approx.)

SPECIFICATION NO : IRS:TC:60/2007

STATUS : PART-I

The Control Office Equipment manufactured by EPSILON is used for Train Traffic Control with Voice Frequency Signalling, using Dual Tone Multiple Frequency (DTMF) Signals as per CCITT recommendations for 4 Wire and 2 Wire Operations.

It is meant for use in Omnibus Speech Circuits like Section Traction Power and Deputy Controls used in Railways using 4 Wire Transmission Circuits employing 2 Tones in Voice Frequency Band for Selectively Calling of the Station / Party concerned. The Controller can select any of the 99 Stations. The System works on 2 Wire mode by connecting a 4 Wire to 2 Wire Conversion Unit to the 4 Wire Control Office Equipment.

This Equipment consists of :

1. DTMF Generator (Encoder) PCB for 2 or 3 digit coding
2. Communication PCB
3. Hand Set
4. Table Type Microphone
5. Loud Speaker
6. 4 Wire to 2 Wire Conversion Unit (where necessary)
7. Works on 12V DC Power Supply

WEIGHT : 10.0 Kg. (Approx.)

SPECIFICATION NO : RDSO/SPN/TC/34/2002 (Ver.4)

STATUS : PART-II

The Voice Frequency Communication System is used with Underground PET 4/6 Quad Cable of 0.9mm dia, having characteristic impedance of 470 ohms vide Specification No. IRS:TC:30/07 for Telecommunication between Way Side Stations and Control Office / Test Room.

By using this System, the PET Quad need not be loaded to compensate the uneven attenuation characteristics over the voice band. There shall be no need for balancing. The typical characteristics of the cable is that the attenuation (losses) increases with frequency in the band of 300 - 3400 Hz. The Equalizer Amplifier designed for the System has the counter characteristics to equalize the cable losses in the V.F. Band of 300 to 3400 Hz.

The System comprises of :

1. Multiple Way Station Equipment (depending on the Section)
   The Way Station Equipment (WSE) consists of required numbers of KRONE Connectors, 2 Nos. of Link Panel, 4 Nos. of Quad Amplifiers (for Section, Emergency, Deputy and S&T Control Circuits), 2 Nos. of 4 Wire DTMF Decoder and Control Telephone (for Section and Deputy Controls), and Radio Patching facility.
   Each Quad Amplifier consists of a Remote Sensor to send the details of the status of the Station to the Test Room.
   An optical 8 Way Intercom can be provided in the Way Station Equipment as required by the Consignee.
   
   
2. Test Room Equipment and Allied Control Office as well as Emergency Control Room Equipment.
   The Test Room Equipment is the same as a Way Station Equipment except that it has no 4 Wire DTMF Decoder. It has a 6 Way Branching Network with 4 Wire Control Telephones in non-conferencing mode and a Remote Monitor (Table-Top) to Send Commands to / Receive Response from, any Station.

WEIGHT : 40.0 Kgs. (Approx.)

RDSO/SPN/TC/34/2002 (Ver.4)

STATUS : PART-I

STATUS : PART-I

ACTIVE

The “ACTIVE” 4 Wire to 2 Wire Speech Conversion Unit is designed to suit the 4 Wire Control Room Equipment.

The design is such that the side tone is kept as minimum as possible for 2 Wire impedance of 600 ohms, and does not need lead adjustment, etc. Trans and Receive gain adjustments are possible with the aid of preset potentiometers. The Equipment operates on 12V DC.

PASSIVE

The “PASSIVE” version of the 4 Wire to 2 Wire Speech Conversion Unit is designed to achieve a leak better than -25dB to 2 Wire impedance of 600 ohms.

This may be used along with the Control Room Equipment as per IRS:TC:60/2007 to convert the 4 Wire Control Room Equipment to 2 Wire Control Room Equipment.

SPECIFICATION NO : IRS:TC:60/2007 (DECODER)

STATUS : PART-I

The Control Way Station Equipment consists of a wall mounted cabinet containing Signal Reception, Recognition, Ringing and Ring Back Transmission Circuit called collectively Decoder and the Voice Communication Equipment. It is housed in a rigid box, avoiding any opening for dust etc.

The front has a hinged door which, after opening gives access P.C. Board wired with Decoder Circuit and Trans / Receive Amplifiers. The Hand Micro Telephone is as per IRS-TC-38/97 with an LED Lamp to indicate that the Station is called and a Buzzer for hooting while the Station is called.

The front has a hinged door which, after opening gives access P.C. Board wired with Decoder Circuit and Trans / Receive Amplifiers. The Hand Micro Telephone is as per IRS-TC-38/97 with an LED Lamp to indicate that the Station is called and a Buzzer for hooting while the Station is called.

It is possible to assign any DTMF Code - 1 to 99 and / or A, B, C, D by setting the DIP Switches I and II (10 Position) and III (4 Position) for A, B, C or D. The PCB is clearly marked for identification 0 to 9, A, B, C and D etc. On receipt of the selected code, it shall decode and electronic buzzer shall hoot and a Red LED provided on the HMT is lighted. The LED shall continue to be lit till the handset is lifted from the cradle

Double cutting relay contacts for both Trans and Receive Amplifiers are provided apart from the Isolation Transformers, to isolate the line from the equipment. Ring Back Tone of the required level shall appear in the Trans Terminals. ‘MOVR’ Based Surge Protection is employed across the RX Lines.

This Decoder operates on 12V DC.

WEIGHT : 2.650 Kg. (Approx.)

SPECIFICATION NO : IRS:TC:38/97 (Amendment No.1)

STATUS : PART-I

The 4 Wire Way Station Control Telephone manufactured by EPSILON is to be used with 4 Wire Way Station Equipment, which is installed on the Way Side Stations.

The 4 Wire Way Station Control Telephone consists of Dynamic Type Transmitter and Receiver Insets (RT 200). It has an Audio / Visual indication at the called Station.

The Body, Handset and other plastic parts are of ABS Plastic. It consists of 1.5 Meter long Coiled Cord and a Straight Cord terminated in a Rosette Box. This Telephone works on 12V.

WEIGHT : 0.590 Kg. (Approx.)

SPECIFICATION NO : IRS:TC:60/2007 (DECODER)

STATUS : PART-I

The Control Way Station Equipment comprises of a wall mounted cabinet containing Signal Reception, Recognition, Ringing and Ring Back Transmission Circuit called collectively as the Decoder and Two Wire Control Telephone.

It is possible to assign any DTMF Code to the Way Station Equipment, 1 to 99 and / or A, B, C and D by setting the DIP Switches I and II (10 Position) and III (4 Position) for Group Codes (A, B, C, D). This ensures a firm and rigid connection. The code selection terminals are clearly marked in the Decoder PCB.

On receipt of the pre-selected code, it shall decode and it shall give Audio / Visual Indication in the 2 Wire Control Telephone.

The Equipment is housed in a Metal Box similar to that of the 4 Wire Way Side Station Decoder.

This Decoder operates on 12V DC.

WEIGHT : 2.650 Kg. (Approx.)

SPECIFICATION NO : IRS:TC:37/97 (Amendment No.1)

STATUS : PART-I

The 2 Wire Way Station Control Telephone manufactured by EPSILON is to be used with 2 Wire Way Station Equipment, which is installed on the Way Side Stations.

The 2 Wire Way Station Control Telephone consists of Dynamic Type Transmitter and Receiver Insets. It has a LED Lamp to indicate that the Station is Called and a Buzzer for hooting while the Station is Called. It has a Pre-Amplifier Circuit give output voltage of 775 mV across the line with 600 ohms load impedance at the input of 5 mV across the Dynamic Type Transmitter.

The 2 Wire Control Telephone consists of ABS Body, Hand Micro Telephone, with Press to Talk Micro Switch, Cradle Switch, Coil Cord and Straight Cord, 6 Way Rosette Box, Buzzer and LED.

The Body, Handset and other plastic parts are of ABS Plastic. It consists of 1.5 Meter long Coiled Cord and a Straight Cord terminated in a Rosette Box. This Telephone works on 12V.

WEIGHT : 1 Kg. (Approx.)

SPECIFICATION NO : CONFORMING TO IRS:TC:61/93

This Equipment is also an associated unit with the Test Room Equipment. The Control Room Equipment (IRS:TC:60/2007) can be supplied duly modified to do the functions of the Emergency Control Room Equipment.

All Controls are provided in the Table Top Equipment and the Loud Speaker Unit is kept separately.

WEIGHT : 15.0 Kg. (Approx.)

SPECIFICATION NO : IRS:TC:82/2005 (Amendment No.1)

STATUS : PART-I

This Equipment is used for Control Communication on 4 Wire / 2 Wire Circuits. The Telephone includes circuitry of conventional Control Telephone as well as Way Station Equipment Decoder.

The Telephone is assembled in Siemens Type ABS Plastic Body and is capable of work on both 4 Wire and 2 Wire Omnibus Circuits by using a changeover switch provided inside the Telephone and works on :

1. Overhead 2 Wire System
2. Underground Cable 4 Wire System
3. OFC OR Digital Microwave System
4. Wiring and Installation is Simpler

The Telephone will work on 12V DC with ± 20% supply voltage.

WEIGHT : 1.0 Kg. (Approx.)

This protection box manufactured by EPSILON shall be used in series with the 2 Wire Line for Surge Protection. This consists of protective devices having the required ratings of Voltage and Current. It has Gas Discharge Tubes / MOVR and current sensing Poly Switches. The Circuit is assembled in a PCB and has 3 input leads and 3 output leads for L1, L2 and Ground.

This is housed in a M.S. Box duly paint protected, with Name Place, Cable Entry Holes, Grommet etc.

WEIGHT : 0.200 Kg. (Approx.)

SPECIFICATION NO : IRS:TC:59/93

Automatic Radio Patching System for Control / Far Ends using DTMF Signalling for OFC System with Dedicated / Without Dedicated Channels.

Control End Relay kept in Control Office Works on 12V DC and the Distance End Relay kept in the OFC Building works on 48V DC.

This unit is optionally available for Control End / Far End with or without 4 Way Branching Network.

WEIGHT : 12.0 Kg. (Approx.)

SPECIFICATION NO : IRS:TC:72/97 (Amendment No.1)

STATUS : PART-I

This SMPS Based Power Supply Unit can support a maximum of six numbers of Way Station Equipment using DTMF Signalling as per Specification IRS:TC:60/2007.

The Power Supply Unit is designed with advanced circuitry techniques with required line and load regulation and very low output ripple, as well as Electrical Protection against Over Voltage, Over Load, Short Circuit and Reverse Polarity of the Battery Connection of Power Supply Unit (both when Power Supply Unit is ON and OFF).

It is supplied with Maintenance Free Value Regulated (Sealed) Lead Acid Batteries (12V/7AH) that conform to Specification IRS:S:93/96.

The Power Supply Unit can provide either One Output (1 Amp.) OR Six Outputs (0.2 Amps. each) for Six Way Station Equipment through 6 Pairs of Terminals.

WEIGHT : 9.0 Kg. (Approx.)

The Cable Termination Box can be supplied for 5 - 20 Pairs as per the requirement. The Box is rugged, weatherproof, and highly reliable and uses Universal Test Disconnect Terminal Blocks of PHOENIX OR WAGO Make.

WEIGHT : 2.0 Kg. (Approx.)

SPECIFICATION NO. RDSO/SPN/TC/62/2008 (Rev-3.0)

STATUS : PART-II

The Digital Clocks use Global Positioning System (GPS) to Synchronize accurate time and are networked (wired and wireless) systems consisting of One Master Clock and several Clocks for Platform and Office. Master Clock receives time from GPS receiver and sends the same periodically to synchronize all Slave Clocks connected to it. The synchronized time is sent through wired (RS-485) or wireless.

SALIENT FEATURES :

• Digital Clock is Microcontroller based System.
• The Clock Synchronizes the signals of the satellite to derive universal GMT time and converts the same into accurate IST.
• All Digital Clocks working as Slave Clocks and connected to Master Clock will be Synchronized with the time of the Master Clock.
• Wired/Wireless Communication between Master and Slave Clocks.
• Real Time Clock Backup for GPS reception.
• Automatic Synchronization of Real Time Clock, from GPS Receiver.
• Intensity Control of Slave Clocks from Remote Master Clock Unit.
• Manual setting of Real Time Clock, Hours and Minutes, 12 Hr. / 24 Hr. format.
• Test Switch is provided with all Clocks.
• Front Panel LED indicators for communication health in Master Clock.
• Front Panel LED indication for GPS receiver’s health.
• The Clock has a Portable Plug and play antenna.
• The antenna has a magnetic provision to mount it out door to clear sky.
• User friendly, menu driven diagnostic feature in Master Clock Unit like :
  • Add Clock to network
  • Delete Clock from network
  • Brightness Control Level indication of individual clock.
  • Getting individual Clock details
  • Reset Clock
  • Individual Port Control
  • Wireless enable / disable
• External GPS Receiver can be connected to all Clocks (Master, Platform and Office Clocks)
• The System shall continuously display time maintained by the local RTC. This RTC will be adjusted once in one minute to the time received from GPS receiver or from Master Clock. If GPS data is not available, no adjustment will be done to the Clock and display the local RTC time.
• Display format of Master Clock will be 7 Segment displays for time display and 16x2 alphanumeric LCD for diagnostic routines.
• The Clock body is rugged and weather proof.

APPLICATION AREAS :

• Railway Stations
• Airports
• Bus Stations
• Industries
• Sports Complex
• Emergency and Police Services
• Government and General Offices etc.

Technical Specifications :

EPSILON Make Annunciator is engineered with Electronic Circuitry is designed with SCRs, Ringer and Ringer ICs, having Audio Visuals (LED and Buzzer) indications. The Desk Type Annunciator is Assembled in a Metal Box duly Powder Coated. The mechanical arrangement is improved version of RDSO Drg. No. TCA : 3352 (Adv).

EPSILON has Two Models :

1. For use with Magneto Telephone as per IRS:TC-36/97. One number of Magneto Telephone as per IRS:TC:36/97 to be provided (*) with the Annunciator, which shall be connected to the Annunciator Unit. This Unit works on 3 to 4.5VDC
2. For use with Electronic Magneto Telephone as per IRS:TC:79/2000. One number of Electronic Magneto Telephone as per IRS-TC-79/2000 to be provided (*) with the Annunciator, which shall be connected to the Annunciator Unit. This Unit works on 12VDC.

The Units are available for 5 or 10 Lines. In both the Models, the LED of the Unit shall glow till the Master Switches ‘ON’ the TALK Switch of the Called Slave. The Buzzer shall hoot as long as the Caller Rings.

One number of the respective Magneto Telephone (as per IRS:TC-36/97 or IRS:TC-79/2000) shall be provided by the Purchaser as the Master, which shall be connected to the Annunciator Unit.

(*) NOTE : THE MAGNETO TELEPHONE TO BE CONNECTED TO THE ANNUNCIATOR DOES NOT FORM PART OF OUR SUPPLY.

6 QUAD CABLE ARRANGEMENTS

6 Quad Cable Arrangements in RE area along with OFC at Station shall be made for providing communication facilities between Stations.

For providing the above communication facilities equipment has to be manufactured and installed as per the Drawing No. B/SG/P/Drg/Tele/1/2008 supplied by the Railways and shall be provided with the following equipment :

1. Clamping Arrangement for the Cable : Provision for the Cable fixing shall be made with clamps, bolts and nuts for fixing the cable at the bottom and top sides of the box over the teakwood plank.
2. Fabrication of Box for Fixing the Equipment : The box shall be fabricated with M.S. Sheet of 1.2 mm thickness and powder coated double coated. The colour of the painting of the box shall be Siemen’s Grey. Arrangements shall be made for front opening of the box with a opening cover with door locking arrangement. The V.F Transformers are to be fixed inside the box on ‘T’ angles. The ‘U’ Link Sockets and Auto Telephone Selector Switches shall be mounted on the hinged plate inside the box for easy maintenance / servicing. The Wago Connectors shall be mounted on Din Rail.
   
   The fabricated box shall be wall mounted with frame made of MS angles and shall be fixed to the wall.
3. Earthing Arrangements : All the equipment shall be earthed properly by using earth wire, bolts and nuts. The mounting frame also shall be provided with proper earthing arrangements.
4. Cable Termination Boxes : 02 Nos. of Cable Termination Boxes for terminating the incoming and outgoing cables shall be provided. The number of terminals for fixing the 6 Quad Cable shall be 24 Nos. in each box. The terminals shall be mounted on the backlite board. The CT Boxes shall be fitted to the teak wood board with bolts and nuts and shall be provided with a cover with locking arrangements.
5. V.F. Transformers : The Voice Frequency Transformers of 470 : 1120, 470 : 600 and 1 : 2 Signal Transformers as per IRS:TC:22/76 shall be provided for the purpose of impedance matching of the circuits.
6. Wago Connectors : Disconnect Type Terminal Blocks of WAGO make, Series 280 which are approved by RDSO vide Letter No. STS/E/Connector/WAGO/Vol/III dated 31.05.2006 shall be used for connecting equipments and telephones.
7. ‘U’ Link Sockets : ‘U’ Link Sockets shall be provided for making the circuit connections.
8. Auto Telephone Selector Switches : 02 Nos. of Rotary Switches of 2 Pole / 3 Way shall be provided for selecting the Railway Exchange or DOT or OFC.

II Internal wiring of the equipment shall be done using 02 Pair Switch Board Cable as per Drg. No. B/SG/P/Misc/50/2008.

1. Quad 1 - Block Circuit
2. Quad 2 - Intermediate Block Signalling (IBS)
3. Quad 3 - Emergency Communication Circuit
4. Quad 4/1 - Level Crossing Gate Circuit
5. Quad 4/2 - TAWS Circuit
6. Quad 5 - Block Proving by Axle Counters (BPAC)
7. Quad 6/1 - Auto Phone and
8. Quad 6/2 - IB Phone

6 QUAD CABLE ARRANGEMENTS IN RE AREA ALONG WITH OFC AT STATION	6 QUAD CABLE ARRANGEMENTS IN RE AREA ALONG WITH OFC AT STATION

The wiring shall be made as per the drawing supplied by the Railways as under :

Quad 1 - Block : This Quad shall be connected to the Block Circuit through 470 : 1120 VF Transformer (IRS:TC:22/76). 470 Ohms impedance is to be connected to cable side and 1120 Ohms impedance is to be connected to the Block Instrument side.

Quad 2 - IBS : This Quad shall be connected to the Axle Counter Working.

Quad 3 - EC :

1. EC Circuit shall be fed to one station only through OFC i.e. from ‘A’ Station to ‘B’ Station, Station ‘B’ to Station ‘C’ and so on.
2. In case of cable cut between Station ‘A’ and Station ‘B’, patching arrangement shall be made available for EC Circuit by extending OFC from Station ‘B’ to Station ‘A’.

Quad 4/1 - LC Gate :

1 : 2 Signal Transformer as per IRS:TC:22/76 shall be provided, as the distance between Station and L.C Gate is more than 7.5 Kms. For DTMF Selective Calling Phones, Circuit without 1 : 2 Signal Transformer is to be provided.

Quad 4/2 - TAWS : TAWS Circuit shall be connected in this pair.

Quad 5 - BPAC : BPAC Circuit shall be provided in this pair.

Quad 6/1 - Auto Phone : This Circuit shall be provided through 2 Pole / 3 Way Rotary Switch for selecting the Railway Exchange or DOT or OFC.

Quad 6/2 - IB Phone : This Circuit shall be connected through 1 : 2 Signal Transformer as per IRS:TC:22/76 for Magneto Telephone. Provision for Talk Back System without Transformer shall be made in this pair.

I. RE AREA

The Signal Post Telephone (SPT) consists of :

1. Master Telephone in Assistant Station Master’s Cabin (MT)
2. Slave Telephone fixed on Signal Post (ST)

SCOPE :

This is similar to the above, but due to heavy induction in the cable due to 25KV AC overhead lines, it has separate Power Supply with the Slave (24VDC) and it has specially designed filter to remove the induced voltage in the cable.

MASTER TELEPHONE (MT) :

This is kept on the Desk of the ASM to facilitate communication between ASM (MT) and the loco driver (ST) for controlling movement of train. This consists of a Microphone Amplifier, Loud Speaker and a Press To Talk Switch. The Master (MT) and the Slave (ST) have separate power supplies of 24VDC each.

Provision is given on the front panel to adjust the output level by using a Potentiometer.

Only 2 Wires shall be wired between Master Telephone and Slave Telephone.

SLAVE TELEPHONE (ST) :

The Slave Telephone is kept on the Signal Post (IBS) at a convenient height. This consists of the Microphone, Amplifier, Loud Speaker and a Press To Talk Switch.

A Potentiometer is provided inside the unit to adjust the output level.

The conversation would be in the ‘Half Duplex’ mode and the Slave Telephone has to be connected to the 24VDC Power Supply Unit. As an option we can provide operation from 110VAC, 50 Hz also at extra cost.

II. NON RE AREA

The Signal Post Telephone (SPT) consists of :

1. Master Telephone in Assistant Station Master’s Cabin (MT)
2. Slave Telephone fixed on Signal Post (ST)

The System is Simplex (Only one can talk at a time)

MASTER TELEPHONE (MT) :

This is kept on the desk of ASM to facilitate communication between Assistant Station Master (Master Telephone) and the Slave Telephone for the Loco Driver in connection with movement of trains. This consists of a Voice Amplifier, Loud Speaker, Audio Visual Indications (Buzzer and LED) Power ‘ON’ LED, ‘Call Transfer’ Switch and a ‘Press to Talk’ Switch (PTT).

The System works on 12V DC power Source.

Only 2 Wires shall be wired between Master Telephone and Slave Telephone.

The Master Telephone is housed in a Metal Box duly powder coated and facilitates hand free listening. When the call is received from Slave Telephone, the Buzzer hoots and a RED Led glows. The Master Switches ‘ON’ the ‘Call Transfer’ Switch and the Master Telephone shall be able to listen Slave Telephone’s Speech in the Loud Speaker.

When the Master Telephone wants to talk to the Slave Telephone, he has to press the ‘Press to Talk’ Switch. After the conversation is over, the ‘Call Transfer’ Switch is switched to normal position.

SLAVE TELEPHONE (ST)

This is kept on a Signal Post (IBS) fixed rigidly at a convenient height. The enclosure is Weather Proof, Rugged and Powder Coated.

This consists of a Loud Speaker and a ‘Press to Call’ Switch. By pressing this Switch the Master Telephone gets an Audio Visual Indication and the Master Telephone presses the ‘Call Transfer’ Switch and the communication between Master Telephone and Slave Telephone is established. Whenever the Switch is pressed by the Driver; he gets a Ring Back Tone to indicate that the Assistant Station Master has received the Call Signal. After the conversation, the Driver does not have to Switch Off anything.

No Power Supply required.