HP 8753D Option 011

Measurement
Control
Signals. V
oltage lev
els on
the
pins
iden
tied
in
T
able
9-3
con
trol
measuremen
t
direction
(forw
ard
or
rev
erse)
and
the
doubler
o
function. Press
4
MEAS
5
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N
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S
PARAMETERS
and
en
ter
the
measurements
listed b
elow.
After eac
hen
try,
chec
k
the
pins
(see
Figure 9-4
)
for
the
indicated
v
oltages.
In
similar
fashion,
c
hange
the frequency
range to
6GHz
or
3
GHz
by
pressing 4
SYSTEM
5
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N
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FREQ
RANGE
3GHz6GHz
and c
heck
the pins
for the
indicated
v
oltages.
T
able
9-3.
Measurement
V
oltage
Matrix
HP
85046A/B
HP
85047A
Pin
8
Pin
8
Pin
22
Pin
23
Re:
FWD
S11
(A/R)
+5 0 0 +5
T
rans:
FWD
S21
(B/R)
+5 0 0 +5
T
rans: REV
S12 (B/R)
0 0 0 0
Re:
REV
S22
(A/R)
0 0 0 0
Doubler
OFF
0 0 +5 0
Prop
er
v
oltages:
refer
to
the
test
set
man
ual
to
con
tin
ue
troublesho
oting. F
or HP
85047A
systems,
rst
see
HP
85047A
Note,
ab
o
v
e,
to
reset
the
analyzer.
W
rong
v
oltages:
replace
the
A16
rear
panel
assem
bly
of
the
analyzer.
Remote
T
rigger.
Monitor
pin
24
with
an
oscilloscop
e.
Press
4
PRESET
5
:
+5
V
should
b
e
presen
t
during
PRESET.
After
PRESET a
negativ
e-going
pulse
to
zero
v
olts,
ab
out
200
nanoseconds
long,
should
b
e
visible.
The
pulse
should
b
e
presen
t
at the
b
eginning
of
eac
h
sw
eep.
T
o
increase
pulse
visibilit
y
,
decrease
n
um
b
er
of
p
oin
ts
to
3
and decrease
sw
eep
time
to
50
milliseconds
on the
analyzer.
Prop
er
pulse:
troublesho
ot
the
test
set
b
y referring
to its
man
ual.
F
or
HP
85047A
systems,
rst
see
HP
85047A
Note,
ab
o
v
e,
to
reset
the
analyzer.
Incorrect pulse:
replace the
analyzer
A16
rear
panel
assem
bly
.
Sweep
Delay
.
This
signal
dela
ys
the
start
of
the
analyzer's
sw
eep
to
allo
w
for
test
set switc
h
settling
time.
It
also distinguishes,
by
encoding,
the HP
85047A
from
the
85046A/B
test
sets.
See
the
test
set
man
ual
for
more detail.
F
or
HP
85047A
systems,
rst
see
HP
85047A
Note,
abo
v
e, to reset the analyzer.
DRAFT
3/21/106 15:13
Accessories Troubleshooting 9-9
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