I C S - 2 4 H E A T S E T S T A T I O N
1 - 5
Headset Connector
The headset connector is located on the front panel. All Clear-Com headsets are
recommended for use with the ICS-24. The Clear-Com PT-4 Push-to-Talk
Microphone or the HS-6 Telephone Handset will also plug into the headset
connector. The following is a description of the characteristics of a suitable
headset:
• Mic Type—Dynamic; 150 to 400 ohms impedance; -55 dB output level.
• Headphone—Dynamic; 50 to 2000 ohms impedance.
The wiring of the headset is to be as follows:
Table 2: Headset Wiring
The microphone and headphone wiring in the headset cord must be individually
shielded.
PIN NUMBER
FUNCTION
1
Microphone ground
2
Microphone hot
3
Headphone ground
4
Headphone hot
• Note: Do not connect
Pins 1 and 3 together.
Headset extension cords
or headset “Y” cables are
not recommended
because they may
increase crosstalk
between channels.
