Clear-Com RS-603 (No longer available) - Manual (Page 36)

V - P A C K I N S T R U C T I O N M A N U A L 5 - 4
AUXILIARY HEADPHONE OPTIONS
You can select to limit the headphone audio on an auxiliary headphone just as
you can limit it on the main headphone. Clearing the check box turns off this
feature.
Figure 6: Auxiliary headphone option for a single-channel beltpack
OPTIONS FOR A DUAL-CHANNEL BELTPACK
For dual-channel beltpacks, the Headset Options screen displays the following
headset options, shown in Figure 7.
Figure 7: Headset options for a 2-channel beltpack
MAIN HEADSET MICROPHONE OPTIONS
D YNAMIC OR E LECTRET M ICROPHONE
You can select either a dynamic or an electret microphone as the main
microphone, as shown in Figure 3. When you select an option, the beltpack sets
the appropriate audio levels for that option.
Most standard XLR-terminated intercom headsets use dynamic microphones. An
electret microphone produces a stronger audio signal than most dynamic
microphones, and does not pick up hum from surrounding equipment.
You can also select between high gain and low gain for the microphone input.
Normal operation is high gain. The low-gain option improves the signal-to-noise