Instruction manual
ACU-1000 Operations Manual
Interoperability Now 2-39
Table 2-10 ACU-1000 Hardware Configuration Settings
Main Chassis Rear Panel Designator Factory Setting
AC Line Voltage 110V/220V AC nominal
AC Line Input Module
Normally 110;
Set for 220V if specified on
Purchase Order,
Power Supply Module Designator Factory Setting
Charger On/Off
SW3
Off
HSP-2A Module Configuration Designator Factory Setting
Internal/External Speaker Selection
JP1
Internal Speaker Enabled
VOX Hangtime (not used with ACU-1000)
JP3
N/A
VOX Sensitivity (not used with ACU-1000)
R123
N/A
Microphone In level
JP4 to JP6
Hi- JP6
Line In level
JP7 to JP9
Normal-JP8
P13 Pin 6 configured for Speaker Out or Ground
JP10
Speaker Out
CPM-4 Module Configuration Designator Factory Setting
Reset module to Factory Default Configuration
J23
Do not reset unless needed
DSP-2 & DSP-3 Module Configuration Designator Factory Setting
RX Input. Low or High Impedance
JP1
Low (600 ohms)
RX Input: Balanced or Single-Ended
JP2
Balanced
RX Input: Balanced 600 ohm or unbalanced high Z*
J23*
Balanced 600 Ohms
RX Input: AC Coupled or DC Blocked*
J15*
AC Coupled
* Note: If the DSP-2 module has a JP1 and JP2 installed, there will be no J15 and JP23 does not affect input
impedance; its purpose is reserved for future use.
Reset module to Factory Default Configuration
J22
Do not reset
LP-2 Module Configuration Designator Factory Setting
Handset Speaker Volume
JP1
Norm -6 dBm
Microphone Input Level
JP3
Norm – 0dBm
Loop Current
JP5
20 mA pins 1&2
PSTN-2 Module Configuration Designator Factory Setting
Ringer Volume
R61
Mid-Range
Line Hold Voltage – DO NOT CHANGE
R107
Factory Test – NO CHANGE