User's Manual

26 ADL Vantage/ADL Vantage Pro/ADL Vantage 35
synchronize itself with the transmission. This is essentially what Scramble Control does
and why we recommend you leave it on for all radios. However, if some of the radios in
your system are not Pacific Crest or Trimble radios, you may need to turn Scrambling off.
Note - Trimble protocols require Scrambling. With a Trimble protocol selected, you are unable
to turn scrambling off.
Forward Error Correction
Forward Error Correction places extra bits in the transmitted data so receivers can check
for transmission errors. Although data throughput is adversely affected, using Forward
Error Correction can greatly improve range and so is strongly recommended.
Note – The Forward Error Correction screen does not appear when using Trimble protocols
as they do not support forward error correction.
Previous Error
The radios perform a variety of power-up and run-time tests to ensure optimal operation.
Tests include environmental as well as electrical measurements designed to avoid damage
to the unit while maintaining adequate operation. In the event of an error condition, an
error code is displayed on the LCD screen and the Pwr LED flashes the number of the
error code (two flashes for Error Code 02, followed by a pause, two more flashes, etc.). The
following table lists the possible error conditions:
Code Description What to do
01 Input voltage is too high Check battery or power supply voltage level; check power
cables; recharge or replace the battery; check the charger.
02 Input voltage is too low
08 Internal temperature
exceeds limit for
operation
Place the radio in the shade; check the antenna and antenna
cables for damage or disconnection; set radio link rate to
19200 to reduce the duty cycle.
11 Memory error Turn the radio off and wait a full second before turning it
back on. If the radio still reports Error Code 11 or 12, the
SRAM memory may be corrupted. Contact Customer Service.
12 RAM Error During
Initialization
15 Transmit Frequency Lock
Error
If you are using the radio as a repeater, ensure that the
transmit and receive frequencies are less than 10 MHz apart.
Otherwise, you should return the radio for service. If the
radio displays Error Code 15 (Transmit frequency lock error),
it is important to stop using it because the frequency control
might be unstable and you might be transmitting at an
unprogrammed frequency for which you are not licensed.
16 Receive Frequency Lock
Error
17 Serial buffer overflow If data comes into the radio faster than it can be transmitted,
the serial buffer can overflow.
If the radio displays Error Code 17, adjust the serial baud rate
and radio link rate so the radio has enough time to transmit
each data packet before the next packet is sent to the radio.
If the radio continues to display the error code after you have fixed the situation, clear
the error code from the radio’s display. Press the On/Off button for four seconds (turning
off the radio), wait one full second and then press the On/Off button again. If an error
warning persists, contact an authorized dealer or customer support.