Kantronics KPC-9612 Plus, Руководство пользователя

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+ If you do not see the receive LED light, check the cabling between the radio and
the KPC-9612 Plus. Also, until it has been initialized from the computer, the
KPC-9612 Plus will not show ANY indication of receiving.
Note: If you connected to a fixed level (unsquelched) receive audio from the radio,
the receive LED may remain on all of the time. In this case, set the parameter CD to
SOFTWARE. Then, the receive LED will not light until valid packets are heard.
(see CD in the commands section)
Transmit level adjustment
The 1200 baud data drive level (transmit audio voltage, TXA) from the
KPC-9612 Plus to your radio is adjusted digitally, using your keyboard and the
transmit level (XMITLVL) or the calibrate (CAL) command. Previous models
used a set of jumpers and an analog potentiometer (pot) to set this level. With the
KPC-9612 Plus, no jumpers are used, just a command.
You should adjust the drive level to provide about 3 to 3.5 kHz of deviation with
your radio. If you don’t have access to a deviation meter, adjust drive so your
packet transmissions generate about the same audio sound as packets heard from
other stations.
The XMITLVL command has a parameter default value of 100; this corresponds
to a drive voltage of about 50 mV. You may change this level by increasing the
parameter/count. For counts below 256, the voltage is increased in 1/2 mV steps;
above that, the drive increases roughly 15 mV per step.
+ For details, see the description of the XMITLVL command in the “Command
Reference.”
Alternatively, you may use the calibrate command (CAL) which has a zoom fea-
ture; that is, you can hold down the ‘-’ or ‘+’ key to decrease or increase the volt-
age (as you watch a meter or listen). See the commands section for more detail
on these commands. CAL is not available in the NEWUSER mode; you must be
in TERMINAL mode to access CAL.
Port 1: Connect to a Transceiver Installing Your KPC-9612 Plus
KPC-9612 Plus v 8.2 57 User’s Guide