Table 9. RM1200 Power-up Indications (Cont.)
Unit
Expected Indication
What to do if not …
All the front panel indicators flash
together a few times as the unit performs
its power-up initialization sequence, and
then turn off
If the FAULT indicator lights, a fault has
been detected in the 1 kW amplifier (you
may read the problem by means of its from
panel LCD). Service the 1 kW amplifier.
However, you can still transmit and receive
using the RM125/RM125R by selecting
NONE
on the
PROG>RAD>OPTS>ACC
menu.
If the BYPASS indicator lights, make sure to
select
AMP
on the RM125/RM125R
PROG>RAD>OPTS>ACC
menu
1 kW PA
The 1 kW amplifier tunes to the
RM125/RM125R operating frequency.
After successful tuning, its front panel
LCD displays the selected frequency
Check for proper connection of the RF and
control cables between the RM125/RM125R
(or other exciter unit you are using), and the
1 kW amplifier.
If tuning fails even after turning the
equipment off and on again in the proper
turn-on sequence described above:
•
You are still able to transmit and
receive using the RM125/RM125R by
permanently bypassing the 1 kW
amplifier. For the RM125/RM125R,
you bypass the 1 kW amplifier by
selecting
NONE
on the
PROG>RAD>OPTS>ACC
menu.
•
In an emergency, you may continue
using the 1 kW amplifier as long as no
protection circuit is activated, because
a tuning failure degrades performance
only slightly (the 1 kW amplifier uses
the highest harmonic filter sub-band,
resulting in somewhat higher
harmonics levels when using lower
sub-bands).
However, you must have the
equipment serviced on the first
opportunity.
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