Intercom system P-124

Intercom system P-124
Intercom system P-124
Intercom system P-124
Intercom system P-124
Intercom system P-124
Intercom system P-124

Intercommunication system Р-124 is intended to:

  • provide intercom telephony between five subscribers (four subscribers inside the object and one outside);
  • output of two subscribers to the external communication via two radio sets (RS1-P-123 and RS2-P-112 (P-130);
  • output of the third subscriber (driver) to the external communication via one radio set RS1 providing by the subscriber of the device А-2 via driver’s panel in case the driver operates in special mode;
  • run-through the signals of the emergency equipment GO27 by the members of the crew being in the intercom telephony mode.

Intercom system Р-124 is installed into the objects that have DC mains voltage 26±3,9V.

 

Intercom system P-124 has two versions:

  • with power supply from vehicular main with voltage 26V DC;
  • with power supply from vehicular mains with voltage 13V DC with minus on the body of the device A-1

 

These versions differ from each other by the circuits elements of the devices A-1 and separate elements of the circuits of other devices and their units are not interchangeable.

 

Intercom system Р-124 provides the following types of communication:

  • intercom telephony between five subscribers (with own speech run-through);
  • intercom telephony between four subscribers (with own speech run-through) when one of subscribers is operating on radio via devices А-1 or А-2;
  • intercom telephony between three subscribers (with own speech run-through) when simultaneous operating of two other subscribers on radio via their devices (the first subscriber via device А-1, the second – via device А-2);
  • circular telephony between five subscribers (with own speech run-through) realizing by pressing the push-to-talk switch up to the stop from the position RCV (receive) to the position CALL (call) by any of the subscribers except the subscriber situating outside the object;
  • external communication on the radio via one of two radio sets for the subscribers switched to the devices А-1 and А-2;
  • exit of the subscriber (driver) switched to the device А-4 (А-3) to the external communication via one radio set realizing by the device A-2 subscriber while setting the switch to the position RS (radio set) on the driver’s panel or to the double-sided intercommunication telephony when setting this switch to the position ITC (intercom).

 

Intercom system P-124 is intended to operate in following environment:

  • operating temperature of the air from minus 50 up to -50˚С;
  • relative air humidity up to 95-98% at the temperature +40±2˚С;
  • vibration in frequency range 15-120 Hz with acceleration 6-3 d;
  • vibration in frequency range 15-120 Hz with acceleration 2g (vibrostability);
  • shock load with acceleration 150g at the rate 40-80 shocks per minute (shock resistance);
  • in objects where the level of acoustic noise is not higher than 120 dB;
  • operation with the external terminal; (PC) via interface RS232.

 

Technical characteristics

Main parameters

Norm according to the technical conditions

Power supply source:

 - vehicular mains with DC voltage, V

   or

 - vehicular mains with DC voltage, V

 

26+3,9

 

13+1,95

Current consumption, max:

 - vehicular mains with DC voltage 26V, А;

 - vehicular mains with DC voltage 13V, А

 

up to 0,45

up to 0,5

Output voltage on frequency 1000Hz at input voltage 3mV, not less, V

10

Amplification constant of the amplification path

4 000

Frequency range of the amplification path, Hz

300 – 3 000

Non-linear distortion coefficient of the amplification path at output voltage 10V on frequency 1000 Hz, not more, %

10

Discrete word intelligibility coefficient in conditions of acoustic noises with level 120dB, not less, %

90