TELIKOU
TM-200 Eight Channel Main Station
4
11. Power
Power switch
12. Program Listen Level Control
This knob is used to adjust the volume level of background program level which heard from
earphone and speaker.
13. Sidetone zero-adjusting
The TM-200 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.
B) Sidetone Adjustment Procedure for Headset:
1 Turn on the Mic switch. Set Mic select switch to headset.
2 Turn the level control to a comfortable level by having someone talk to you from another
station.
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.
C) System Sidetone Adjustment
1 Turn off all the microphones on sub-stations and belt packs.
2 Followed by A) and B), adjust sidetone on TM-200 main station.
3 Turn on the microphone on sub-station and belt packs one by one, and then adjust the
Sidetone to satisfied level.
