FM Tokenless Transmitter & Receiver

FM Tokenless Transmitter & Receiver

FM Tokenless Transmitter & Receiver

MS 1522

Transmitter and Receiver units are designed to work at 24V DC voltage (nominal) with variation between 19.2 V to 28.8V. The system is designed to work with carrier frequency 1800/2700 Hz and modulated frequency 65Hz/85Hz. For 1800Hz Carrier Frequency RED border is used in Front Panel and for 2700Hz Carrier Frequency BLUE border is used in Front Panel. Maximum power consumed by transmitter and receiver are 1.2W and 8W, respectively. Sense level for receiver is less than –19 dBm and No sense level for receiver is more than –22 dBm with 1mw (0 dBm) transmitter power. The equipment is designed to work satisfactorily with temperature variation from 0°C to 55°C with relative humidity of 95% at 35°C. Suitable test points are provided in the back of the equipment to monitor the necessary parameters.


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Product Model

Type

Transmitter Frequency

Receiver Frequency

1800 Type

1800 Hz

1800 Hz

2700 Type

2700 Hz

2700 Hz

 

Transmitter Specifications

Item

Rating

Remarks

Transmission frequency

1800 Hz or 2700 Hz

±2%

Transmission output

1mW, 3mW, 5mW adjustable

±10 %, -5 %

Output Impedance

600 Ohm, 1120 Ohm adjustable

±10 %

Modulation System

Frequency Modulation

 

Modulation Frequency

65 Hz or 85Hz

±1.5Hz

Power Consumption

1.2Watt or less

At 24V DC

Input Power Supply

24V DC

±20 %

Shift Frequency

160Hz

±15 %

 

Receiver Specification

Item

Rating

Remarks

Receiving frequency

1800 Hz or 2700 Hz

±2%

Level Range

1 to 28 dB

In steps of 2dB or less

Input Impedance

600 Ohm, 1120 Ohm adjustable

±10 %

Relay output voltage

24V DC or above

21V Min.

Power Consumption

8 Watt or less

At 24V DC

Input Power Supply

24V DC

±20 %

Sense level for Receiving

More than -19 dBm

 

No sense level for receiving

Less than -22 dBm

 

 

Application

  • Railways

 

Environmental Conditions

  • Operating Temperature: -40°C to +75°C
  • Storage Temperature: -40°C to +85°C
  • 90% Relative Humidity (Non-condensing)

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