Specifications, Front-panel controls and connectors, Rear-panel connectors – Clear-Com ICS-2003 User Manual
Page 79: Panel microphone input, Headset microphone input, Local program input

Clear-Com Communication Systems
ICS-2003 Intercom Panel Instruction Manual
4 - 1
SPECIFICATIONS
Note: 0 dBu is referenced to 0.775 V RMS
FRONT-PANEL CONTROLS AND CONNECTORS
Talk/Listen Switches:
12
Function Buttons
16
Answer Back Switch
1
Volume Controls
2
Headset Connector
1 D4M XLR
Panel Mic Connector
1 1/4 in. Phone Jack
REAR-PANEL CONNECTORS
Miscellaneous
DB-15F
To Matrix
RJ-45 & DB-15M
Audio IO (OPT-100)
DB-15F
Accessory
DB-9F
DC Power
5 Pin
PANEL MICROPHONE INPUT
Type:
Electret
Input Level
40 dBu
Gain Adjustment Range
+/-5dB
Impedance
200 Ohms
HEADSET MICROPHONE INPUT
Type
Dynamic
Input Level
-55dBu
Gain Adjustment Range
+/- 5dB
Impedance
200 Ohms
LOCAL PROGRAM INPUT
Type
Transformer Isolated
Impedance
8k Ohms Bridging
Level
0 dBu will produce full output of
speaker when volume control is fully
clockwise
4