Specifications

9
issue, the operating range is now limited only by the audio transmission range, which
is several miles. Another advantage to this method is more stations can be connected
to the intercom channels. When local power is supplied to an intercom station, the
station detects this and automatically disconnects from the phantom power supply. As
long as an Audiocom power supply is located somewhere in the intercom system, the
proper terminating impedance is supplied to all stations.
All Locally Powered Intercom Stations (Dry Lines)
If all intercom stations are widely distributed, you can dispense with a main power
supply and use local power for each station. When no power is delivered on the
intercom channels, this is known as dry-line operation. However, since an Audiocom
power supply is not used, a line termination must be inserted in each intercom
channel for proper operation. An example of dry line operation is shown in Figure 5
on page 14. The required termination components are shown in Figure 8 on page 16.
Dynamic-Mic Headset Connection
NOTE: For headset specifications, see page 19. For best results in noisy
environments, a noise cancelling (directional or cardioid) microphone is
highly recommended.
To use the dynamic-mic headset, do the following:
1. Verify DIP Switch 4 is properly set for balanced or unbalanced
microphone. See Chapter 1, “Configuration Switch Settings,” on page 7.
2. Plug the headset into the headset connector on the unit.
3. Power up the intercom system.
4. Check the sidetone adjustment before placing the station in operation.
93507621000 WM10002000UserManual.book Page 9 Monday, April 27, 2009 3:09 PM