MODEM SETUP
2-3
001-3282-101/102
2.1.3 3282 LEDS
The 3282 has 2 LEDs (CR220) that are visible through the adjustment hole in the case closest to the 10 pin connector.
One LED will flash green whenever the modem has power and the microcontroller U220 is operating correctly. The
other red LED will be solid red whenever the modem is transmitting.
2.2 FACTORY DEFAULT SETTINGS
2.2.1 INTRODUCTION
Normal
Conventional
Bell 202
Half Duplex
Active High Squelch
FSK Audio
240 ms RTS to CTS Delay
100 mS Soft Carrier Turnoff debounce time
Transmit Input Level (pre-set for 400 mVrms)
The factory default setting for the RTS to CTS time is set to the maximum delay for compatibility with a
wide range of products. When used with DRL synthesized radios (DL-3400 and JSLM
/RNet) a shorter delay
time (30 ms) may be used. These settings may require adjustment in the field to optimize performance in your
application.
2.2.2 RECEIVE INPUT LEVEL
For proper operation of the modem, the carrier level from the transceiver should be 35 mVrms -1 mVrms
(or 99 mVp-p - 2.8 mVp-p). DRL transceivers are factory adjusted to provide a data level output to the modem of
707 mVrms (or 2 V p-p) for use with the DRL DL-3400. The data level output to the modem when used with the
DRL JSLM
/RNet is 212 mVrms + 17.5 mVrms (or 0.6 V p-p + 0.05 V p-p).
2.3 ADJUSTMENTS
2.3.1 INTRODUCTION
There are two adjustments on the modem board. These adjustments have been set at the factory and may require
further adjustment in the field for your application.
DIP Switch S101
Transmit Level R400