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eCUBIC
COMMUNICATIONS
S.,I/IIII
DIVISION
burned wires,
components
and boards;
loose and
improperly mounted plugs;
frayed or pinched wires; loose hardware, etc.
Connect a suitable power supply to the POWER 13.8 volt connector on the
rear apron of the unit.
Connect the wattmeter, dummy load and "T" connector
with the attenuator to the ANTENNA connector.
Connect a suitable microphone
to the KEY/MIC jack on the front panel.
Set the
front panel
controls as follows:
AF GAIN,off; RF GAIN, fully
clockwise; IF GAIN fully clockwise; AGC DELAY fully counterclockwise:
PASS-
BAND 12 o'clock; NOTCH FILT fully counterclockwise;
MIC GAIN fully counter-
clockwise; PTO MODE to PTO A; MODE to LSB and BAND to 20.
INITIAL CURRENT AND LIGHT CHECKS
With the power off,
thetotal current drain should be less than 15 ma.
Turn the AF GAIN
control to turn the power on,
and the total current drain
should be less than 2 amperes,
the meter light should come on,
the display
should light, and the PTO A and PASSBANDKHZ lights should come on.
Key the unit with the microphone
button.
The total
current drain sh-
ould increase between 1 to 1.5 amps.
PTO MODE SWITCHING AND RIT OPERATION
-- ---
----
Set the PTO MODE switch
to EXT,
and the
display
should read 11000.1
±
1. Set the MODE to USB, and the display should read 10996.8
±
1.
Bath PTO
lights should be off.
Set the PTO MODE to A and adjust PTO A for
14260.0
with the RIT off
(RIT light off).
The PTO A light should
be
on and the PTO B light off.
Key
the unit.
The display frequency should not change, and there should be no
change in the
PTO
lights •
Unkey the unit.
Set the PTO MODE
switch to B and adjust PTO B for 14280.0 with the RIT
off.
The PTO B light should
be
on
and the PTO A light should be off.
Key
the unit, and the display frequency should not change, with no change in the
PTO
ligh ts •
Unkey the uni t.
Set the PTO MODE switch to
REe
A-XMIT B.
The PTO A light should be on,
the PTO B light should be off,
and the display frequency should be 14260.0.
Key the unit;
the PTO A light should go off,
the PTO B light should be on,
and the display frequency should change to 14280.0.
Unkey the unit.
Set the PTO MODE switch to REC B-XMIT A; the PTO A light should be off,
the PTO B light on.
The display frequency should be 14280.0.
Key the unit,
and the PTO A light should come on,
and the
PTO B light extinguish.
The
display frequency should be 14260.0
Unkey the unit.
Set the PTO MODE switch
to PTO A,
MODE to LSB.
The display frequency
should change less than
0.2 kHz
0
Set the
RIT knob pointer to 0 and push
it in to turn
the
RIT
on.
The RIT light should come on,
and the display
frequency should change less than 0.2 kHz.
Adjust the RIT control from full
counterclockwise to fully clockwise
0
The display frequency
should vary be-
tween ± 0.8 to 1.5 kHz.
Key the unit.
The RIT light should go off, and the
display frequency should be the same as if the RIT were off, and the RIT con-
trol should have no effect
on the display frequency.
Unkey the unit.
Push
the RIT
control to turn it off.
The
RIT
control should have no effect on
the display frequency.
Set the MODE switch to USB.
Set the PTO MODE switch to Band make the same checks as for PTO A.
8-2
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Troubleshooting
