Kantronics KPC-9612 Plus, Руководство пользователя

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Transmit Drive level.
After entering the calibrate mode for the high-speed port, you should use the T
option to initiate a continuous signal and then use the ‘-’ or ‘+’ (zoom) key to de-
crease or increase drive level. Adjust drive so that the transmitter produces about
3 kHz of deviation (for 9600 baud). Change J20 if more transmit audio is needed.
+ When the deviation has been set, check the paramater value for XMTLVL and
make a note of that value for future reference.
Receive Equalization.
If you have another 9612 or 9612 Plus station nearby, have that station transmit a
calibrate signal for you. After pressing R, in calibrate mode, measure the dc volt-
age on pin 8 of the DB-15 connector (or test point J) and adjust equalization us-
ing the < or > character until it reads about 3 volts. Alternatively, watch the
Status LED on the front panel while adjusting equalization - holding down the <
or > key. The STA LED should light solidly when the signal quality line (equal-
ization level) is adequate.
PTT (Push-to-Talk) Watchdog Timer
The 9612 Plus has a push-to-talk watchdog timer for both ports. These timers are
both enabled at the factory with jumpers J19 (1200 baud) and J8 (high speed —
e.g., 9600 baud) each on just one post. If the 9612 Plus attempts to keep your ra-
dio transmitting continuously for over 2-1/2 minutes on the 1200 baud port or
more than 30 seconds on the high speed (e.g., 9600 baud) port, the watchdog
timer will activate and release the PTT line to your radio.
To disable the Watchdog timer, connect the pins of J19, or J8, together.
PTT (Push-to-Talk) Watchdog Timer Appendix B: Advanced Information
KPC-9612 Plus v 8.2 301 User’s Guide