TELIKOU
TM-800 with Tally Eight Channel Main Station
4
13. Tone Alert Level Control
When TM-800 with Tally receives external call signal, the internal buzzer will sent a hum to
panel speaker and earphone. This knob adjusts the hum level.
14. Program Listen Level Control
This knob is used to adjust the volume level of background program level which heard from
earphone and speaker.
15. Remote Mic Kill Switch
Microphone on belt pack may forget to be turned off by operators. Noise will disturb the whole
intercom system.
The Remote Microphone Kill (RMK) switch will turn off the microphone of every beltpack
remotely. If the Talk Functions of a large number of beltpacks have inadvertently been left
activated, incidental noise and talking can make it difficult or impossible to communicate on the
intercom system. The Remote Microphone Kill switch can be pressed to quiet the line in this
situation.
16. Listen Level Control
This control is to set the listening level of audio signal in headset or panel speaker. Turn the
control on counterclockwise completely will silence the channel.
17. Sidetone zero-adjusting
The TM-800 with Tally uses full-duplex audio in which the talk and listen audio are sent and
received on the same line. Thus, when you talk on a channel, you will also here your own voice
back in the speaker or earphone. This is called sidetone. Sidetone could cause unwanted
feedback, since the microphone may pick up your returned voice audio and re-amplify it. In
either of these cases, you should minimize the amount of sidetone.
Typically, different sidetone null settings are needed depending upon whether you are using the
gooseneck panel microphone along with the speaker or not. Use one the following procedures
to correctly set the sidetone level controls.
A) Sidetone Adjustment Procedure for Gooseneck Microphone with Speaker turned on:
1 Turn on the Mic switch. Set Mic select switch to panel.
2 Turn the level control to a comfortable level.
3 Speak into the microphone while turning the sidetone null control slowly back and forth. There
should be a point where your voice (and any accompanying acoustic feedback) is the lowest.
This is the null point.
