Headset Microphone Type Selection DIP Switch
SW1-1 applies only to a dynamic-mic headset connected to the dynamic-mic headset
jack on the front panel. If the headset specifications indicate the microphone type is
balanced, or if you are unsure, leave this switch in the off (default) position. If the
specifications indicate an unbalanced microphone set SW1-1 to on.
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For best results in noisy environments, a noise canceling (directional or
cardioid) microphone is highly recommended. This is especially true if you are
using the vox feature.
Mic Kill Send Enable DIP Switch
The US2000A can generate an inaudible signal which will turn off the microphones
on all intercom stations on a channel (for stations that detect this signal). This feature
is useful, for example, when an unattended microphone has been left on and is caus-
ing unnecessary noise on a channel. By default, Mic Kill is not enabled. To activate
this feature set SW1-6 to the on position.
Program Interrupt DIP Switches
If you plan on using external program sources with the US2000A, you have a choice
of whether or not you want the program audio to shut off on the intercom channel
while you are talking. By default, program audio does not interrupt during talk. You
can change this as follows:
1.
For channel 1 program interrupt during talk, set SW1-7 to on .
2.
For channel 2 program interrupt during talk, set SW1-8 to on .
Incoming Call Beep DIP Switches
If call signal receive is enabled (switches SW1-3 and SW1-5), incoming calls will be
indicated by red-flashing Call keys. An optional beep tone can also be used. Internal
switches enable the beep tone. You can then turn the beep tone on or off via the front
panel during normal operation. Enable the beep tone as follows:
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