HP 8753D Option 011 User Manual

A12 Digital
Control Signals
Check
Sev
eral digital
control
signals m
ust b
e
functional
for
the
A12
assem
bly
to
op
erate
prop
erly.
Chec
k
the
con
trol
lines
listed
in
T
able
7-4
with the
oscilloscop e
in the
high input
imp edance
setting.
T
able
7-4.
A12-Related
Digital
Control
Signals
Mnemonic Signal
Description
Lo
cation
See
Figure
Analyzer
Setting
L
ENREF
L=Reference
Enable
A12P2-16 Figure
7-15
Preset
L
HB
L=High
Band
A12P2-32 Figure
7-16
Preset
L
LB
L=Lo
w
Band
A12P1-23 Figure
7-16
Preset
L
ENREF
Line.
This
is
a
TTL
signal.
T
o
observ
e
it,
trigger
on
the
negativ
e
edge. In
preset
state,
the
signal
should
sho
w
activit
y
similar
to
Figure
7-15.
Figure
ENREF7
here.
Figure
7-15.
L ENREF
Line at
A12P2-16 (Preset)
DRAFT
3/21/106 15:13
Source Troubleshooting 7-21
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HP 8753D Option 011 Specifications

General

Brand	HP
Model	8753D Option 011
Category	Measuring Instruments
Language	English