Instruction manual

ACU-1000 Operations Manual
2-110 Interoperability Now
DSP-2 4-wire interface modules should be set with the following changes to default:
COR – Set for hardwired (COR) active low and no VOX or VMR
RX Level – Set for -16 dBm to start
TX level – Set for +4 dBm to start.
In general, there could be different types of remote interfaces such as microwave, private wire,
LE-xx remotes, or large scale communications consoles. Each one of these may have their own
line level preferences in order to keep the overall system levels within the design range. For
the adjustment of the ACU-1000 DSP-2 modules that may be used for the console interface, the
process is as follows.
1. Produce as standard level signal on the RX input of the DSP-2 module selected from the
selected console device.
2. Adjust the RX level for that module either up or down in order to make the signal level LED
blink on and off during speech.
3. To set the module TX level, crossconnect the HSP-2A to the selected module and speak
normally into the handset mic. Adjust the TX level up or down in order to either produce the
proper level of modulation in the radio connected to the module or a proper level of audio in
the remote control RX channel, as appropriate.
End Of Section Two.