ASL INTERCOM PS 155 Instrukcja Użytkownika Pobierz pdf (Strona 6)

User Manual PS 155 / Issue 1

8

2001 ASL Intercom, Utrecht, Holland.

6

5.0 REAR PANEL CONNECTORS

Intercom line

In

Link

To transceiver

PS 155

wireless interface

Serialnumber :

12

13

12 LINE connectors

These XLR-3 connectors are for

connecting the PS 155 to the intercom

system.

Pin assignments:

1. 0 V / ground shield

2. +30 V power wire

3. audio wire

The female connector is for input.

The male connector is for extending the

intercom line to other user stations.

13 TRANSCEIVER connector

A Sub-D 9 pole connector for the

connection of the wireless unit.

Pin assignments:

1. Audio input -

2. Audio input +

3. PTT switch contact

4. Output transmit switch (Common)

5. Output transmit switch (N. Open)

6. Output transmit switch (N. Closed)

7. Ground/shield

8. Audio output +

9. Audio output -

The Audio Input (pin 1 and 2) is a

transformer balanced input, it is decoupled

with condensers to obtain a high DC

resistance.

If the wireless unit uses asymmetric signal

transport then the input - (pin 1) is to be

connected to the ground of the wireless unit

and to pin 7 of the Sub-D 9.

The Audio output (pin 8 and 9) is a

transformer balanced output, it is

decoupled with condensers to obtain a high

DC resistance.

If the wireless unit uses asymmetric signal

transport then the output - (pin 9) is to be

connected to the ground of the wireless unit

and to pin 7 of the Sub-D 9.

An external Push To Talk switch can be

connected to pin 3. The other contact of the

switch must be connected to pin 7 (ground).

Closing the contact activates the transmit

mode of the wireless unit.

The Output Transmit Switch switches the

wireless unit from receive to transmit.

Depending upon the required function by

the wireless unit, two ways of connecting it

to the wireless unit are possible. Please

refer to section 6.0 for the proper

connections.

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