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KMC-18/18A
8
ADJUSTMENT
The DTMF tone deviation has been adjusted at the factory, so does not normally need
to be adjusted.
•
DTMF tone deviation adjustment (for
KMC-
l8/l8A)
1. Remove the three screws securing the back
of the KMC-18/l8A case, then remove the
back.
2. Connect the deviation
meter to the
transceiver to be used, then
connect
the
KMC-18/l8A to the transceiver.
3. Hold down key
[§J.
The transceiver transmits
the DTMF tone corresponding to key
&].
With key
[§J
still down, adjust semi-fixed
resistor VR 1 on the KMC-18/l8A board to set
the deviation to 2.2 kHz.
4. Put the back of the case on.
•
The KMC-18A allows you to adjust the deviation
using the single tone transmission function.
Perform steps 1 and 2 above, then put the KMC-
l8A into set-up mode. (To enter
set-up
mode,
hold down keys
[JJ,
[3],
and
I*l
and switch the
power on.)
Next, press keys
[ill,
[Q],
and
00
in that order,
then press the following keys:
Press
OJ
to transmit the Row 1 tone.
Press
IlJ
to transmit the Row 2 tone.
Press
~
to transmit the Row 3 tone.
Press
[II
to transmit the Row 4 tone.
Press
[[i
to transmit the Column 1 tone.
Press
[ill
to transmit the Column 2 tone.
Press
[l]
to transmit the Column 3 tone.
Press
[ill
to transmit the Column 4 tone.
Adjust VRl while each tone is being transmitted,
setting the deviation to 1 kHz for the Row 1 tone
(key
OJ)
and to 1.5 kHz for the Column 1 tone
(key
[[i).
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