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15.
POTENTIOMETER SUMMARY
The 6K Main Board is designed with 8 potentiometers. These pots adjust audio levels only. Tone
frequencies, CW sending speed, and other parameters are digitally controlled and are remotely
adjusted with DTMF commands. Therefore, the pots will only have to be adjusted when installing
the controller, or when replacing the equipment to which the controller is interfaced.
POT NAME
RX1
(R75)
RX2
(R76)
TX
(R80)
CW
(R77)
PAGE
(R78)
DTMF ENC
(R79)
LL-TX
(R81)
LL-TT
(R82)
The Telephone Interface Module has no adjustment pots. Audio from the controller to the
telephone line is controlled by AGC circuits to be within the levels required by FCC Part 68 rules
and regulations.
6K V1.02 03-16-91
PURPOSE
Adjusts audio level from receiver #1 to controller
Adjusts audio level from receiver #2 to controller
Adjusts master audio level from controller to transmitter
Adjusts level of CW (Morse) generator
Adjusts level of paging tone generator (1-tone, 2-tone, and
5/6-tone paging)
Adjusts level of DTMF encoder to transmitter (DTMF paging)
Adjusts level of landline (phone line AGC'd audio) to
transmitter
Adjusts level of landline (phone line non-AGC'd audio) to
DTMF decoder
27
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