ASL INTERCOM PS 155 Manual de usuario descargar pdf (Pagina 4)

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User Manual PS 155 / October 2013 © ASL Intercom BV

fine tuning the low frequencies. See section 7.0

6 TEST TONE button

By pushing this recessed button the built-in test

tone generator is activated. The test tone assists

in obtaining the best possible side tone rejection.

See section 7.0

7 VOX LEVEL trimmer

This trimmer adjusts the detection level of the

VOX switch. As soon as the VOX circuitry detects

an audio signal on the intercom party line that is

louder than the level set by this trimmer, the

wireless unit goes from receive mode to transmit

mode. See section 8.0 for the VOX adjustment

procedure.

8 VOX RELEASE trimmer

After the audio signal of the intercom party line

falls below the set VOX level, the wireless unit

stays in transmit mode for a period of time that is

preset by this trimmer. See section 8.0 for the

VOX adjustment procedure.

9 TX CONTROL select switch

This switch has the positions VOX, CALL and

PTT, each indicating the way the wireless unit is

triggered to go from receive mode to transmit

mode. See section 5.0

10 POWER LED

This LED is lit when the PS 155 is powered by the

intercom line.

11 Rx/Tx LED

This LED is lit green when the wireless unit is in

receive mode and lit red when the wireless unit is

in transmit mode. See also section 5.0.

4.0 REAR PANEL CONNECTORS

12 LINE connectors

These male and female XLR-3 connectors are for

connecting the PS 155 to the intercom party line.

Pin assignments:

Pin 1: 0 V / ground shield

Pin 2: +30 V power wire

Pin 3: audio wire

13 TO TRANSCEIVER connector

This Sub-D 9 pole connector is for connecting the

PS 155 to the wireless unit. The connector is also

used to connect an external PTT switch to the PS

155.

For pin assignment and further details, see

section 6.0.

1 2 3 4 5 6 7 8 9 10 11 12

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