5954·1504
ERROR
NUMBER
01
02
03
.
04
05
06
07
08
.
09
10
11
12
13
14
15
APPENDIX
II
ERROR
DESCRIPTION
Invalid frequency measurement
on
53445
a.
Signal source output not connected
10
counter input.
b.
Sou
rce power level too
low
c Source
RF
OUT turn
ed
off.
d. Source
RF
BLANKIN
G turned on when using Lock/Roll mode on the
53445
.
e. Signal sou rce frequen
cy
<500
MHzor >18 [26.
51
GHz
f.
Signal source sweeping or being tuned
100
fast.
g.
Signal sou
rc
e internal square wave m
odul
at
ion
turned
on
.
Markers too close to each
other
or to the stop fr
equency
> M
ove
markers.
> [ncrease sweep time
ST
OP
frequency less than
ST
ART
frequency
(S
TOP frequency) - (START frequency) greater than 40 MHz.
> R
educe
sweep span.
Signal
so
ur
ce
FM senSitivity less than 1 MHz/volt.
a. SenSitivity
is
less than 1 MHz/volt.
b 5344A
FM
OUT
nOl
con
ne
cted to
Signal
sou
rce
FM
inp
ut.
c For
86200
series plug-ins: PL-
NORM-FM
switch
in
NO
RM
posItion (Shou
ld
be
in
PL position).
d For
83500 series plug-ins: CW filter enabled
e. 5344A
A6
(
Ma
in
Loop
Board) fuse blown
Signal source
FM
sensitivity greater than
50
MHz/volt.
Sweep too wide for signal source sensitivity
> Reduce sweep width.
>
In
crease source
FM
senSitivity.
Swee
p cann
ot
cross the frequendes
of
500,
650
or
800
MHz
.
>Ch
ange sweep parameters.
Invalid
va
lu
e calculated for frequency multiplier
in
subhannonic locking
mode
a. Sweeper
is
not tuned
dose
enough to desired frequency to allow reliable automatic determination
of harmonic number.
> Tune source closer to the correct frequency
> Use Auto Lock
b. The
53445
has determined that the harmonic number
is
greater than four.
> Enter the frequency multiplier manually
Syst
em
controller switch not set to SYS.CONT.
for
AUla
Lock.
> Turn
on
system controller switch.
> Use
Ma
nual Lock.
Signal source cannot
be
t;,ined close enough
via
HP-IB.
a.
Sou
rce
is
not connected to the HP-
1B
port of t
he
5344A.
b
53
44A
HP-1B
address
is
not set
to
the address of the source.
c. The source is not
an
HP
83SOB or
8620C
opt. OIL
d The desired frequency
is
not within
th
e range
of
the installed plug
-in.
e The
8620C
has a plug-in installed that
is
not supported for Auto Lock
(e.g
8621
AlB).
Auto Lock cannot
be
achieved
a. Source
is
8620C
and
LockIRoU
mode is desired.
> Use Manual Lock for LockIRoll mode
wi
th the 862OC.
b.
5344A HP-IB address
is
nOl
set to
th
e address of the source.
Checksum error
in
power-up R
OM
test;
th
e bad
ROM
is
also displayed.
RAM
failure during power-
up
self test
Input frequency
to th
e
53445
out of range «
500
MHz
or > 18 [26.5} GH
z)
in
Subharmonic or O
ffset
Locking mode.
.:r,.
Apri
l 1984
Prin
ted in U.S.A.
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