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404 AMPL
10K
405 RBW
10K
406 RBW
1OK
407 RBW
1OK
408 RBW
1OK
409 RBW
1OK
410 RBW
10K
411
RBW
1OK
412 RBW
1OK
413 RBW
IOK
414 RBW
10K
Unable to adjust amplitude of 10 kHz resolution bandwidth.
Errors 405 to 416: When these
10K
resolution bandwidth (RBW)
error messages appear, use the following steps to check for errors 581
or 582.
1. Press [LINE to turn spectrum analyzer off.
2. Press
ILINE)
to turn spectrum analyzer on and observe the lower
right-hand corner of the display for 10 seconds.
3. If ERR 581 or ERR 582 appears, the fault is most likely caused by
the cal oscillator. Refer to errors 581 and 582.
4. If ERR 581 or ERR 582 does not appear, troubleshoot the A5 IF
assembly.
Multiple IF errors during IF adjust: If a FULL IF ADJ sequence
(pressing (CAL) and
F0LL
IF
ADJ
) results in IF errors while displaying
IF ADJUST STATUS: AMPLITUDE,
the
cal
oscillator on the A4 assembly
might not be providing the correct output signal. Perform the
following steps:
1. Disconnect W30 (white) from A5J4.
2. Connect W30 to the input of a second spectrum analyzer and set
its controls as follows:
Center frequency . . . . . . . . . . . . . . . . . . . . . . . . . . 10.7 MHz
Reference level
. . . . . . . . . . . . . . . . . . . . . . . . . . . -30
dBm
3. Observe the spectrum analyzer display while pressing FULL IF ADJ
on the spectrum analyzer. If a -35
dBm
signal does not appear,
troubleshoot the cal oscillator on the A4 assembly.
4. If a -35
dBm
signal does appear, troubleshoot the A5 IF assembly.
Unable to adjust 10 kHz resolution bandwidth in first crystal pole.
Unable to adjust 10 kHz resolution bandwidth in second crystal pole.
Unable to adjust 10 kHz resolution bandwidth in third crystal pole.
Unable to adjust 10 kHz resolution bandwidth in fourth crystal pole.
Unable to adjust 10 kHz resolution bandwidth in first crystal pole.
Unable to adjust 10 kHz resolution bandwidth in second crystal pole.
Unable to adjust 10 kHz resolution bandwidth in third crystal pole.
Unable to adjust 10 kHz resolution bandwidth in fourth crystal pole.
Unable to adjust 10 kHz resolution bandwidth in first crystal pole.
Unable to adjust 10 kHz resolution bandwidth in second crystal pole.
General Troubleshooting 7-29