SeaSpace TeraScan 1.5M, Operation And Maintenance Manual

Page: 109 / 232

TeraScan 1.5m Polar Satellite Tracking Antenna O & M Manual
93
7.2.4.1 Antenna Controller (PCU)
CONDITION TEST CAUSE ACTION
No communication
with PCU.
ac 1 S
Serial cable not connected. Attach cable to HR300.
Attach cable to Mux.
HR300 not turned on. Turn on HR300.
Errors in
communications occur
when moving antenna.
ac 1 az 180
ac 1 el 90
Antenna cable connector
is loose.
PCU is defective.
Tighten connector.
Replace PCU {8.4.1}.
Error message
"another task is using
this antenna".
ac 1 S
Another program is using
the antenna. Wait for pass to complete.
There is 110/220 VAC
at antenna power
supply but no/low
voltage at the PCU. Measure pins 14 and 15
of the DB15 connector
attached to the PCU.
14 GND, 15 +24 VDC. Power supply is bad.
Replace power supply {8.4.7}.
PCU does not
complete
initialization. Watch antenna on
powerup. See
section 4.3.2. PCU’s antenna type is
incorrect.
= 112 for 6003L.
= 73 for 6003AL.
1. Turn off antenna power.
2. Unplug pedestal harness
connector from PCU (high
density).
3. Turn on antenna power.
PCU should complete
initialization.
4. Enter n0 value by typing:
ac
<Return>
1
n0999
<Return>
n0073
. (example of n0=73)
NVRAM
6. Turn off antenna power.
7. Connect pedestal harness.
8. Turn on antenna power.