Shift M1; Shift M2; Shift M3 - HP 8340B Manual
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SHIFT
Ml
(HP-IB:
SHM1)
This diagnostic function shows, from left
to
right, what the
M
divisor,
N
divisor,
M/N
frequency,
and
20/30
loop frequency should be (see Figure A-5).
M Divisor
N Divisor
M/N
Frequency
20-30 Loop Frequency
Figure
A-5.
M/N
Diagnostics
SHIFT M2
(HP-IB:
SHM2)
This diagnostic shows,
from
left to right,
what the band number
and
the
YIG oscillator (YO) frequency
should be
(see Figure
A-6).
Band Number
YO Frequency
Figure A-6.
YO
Diagnostics
SHIFT M3
(HP-IB:
SHM3)
This diagnostic shows, from
left to right,
what
the
PLL2
VCO
frequency and
the
PLL3 upconverter
frequency should be (see Figure A-7)
PLL
»2
Frequency
PLL
»3
Frequency
IMLEVILED
^
POWER dB
'
'
«T—T
•I———•
[
o|
GF
'
(TOP
at
REQUEfCY
MHl
•^^•^M
^———————
FREQUEN
»
UHl
•——^•^^
OVUMOO
DfMOTC
MQ
FAULT
WW
W
W
UtH-t
Figure
A-7. 20-30
Loop
Diagnostics
A-28
Assembly-Level Service Front Panel Diagnostics
HP 8340B/41B
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