EasyManuals Logo

Agilent Technologies HP 83711B Service Guide

Agilent Technologies HP 83711B
239 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #42 background imageLoading...
Page #42 background image
Troubleshooting
T
o Troubleshoot
the RF
Detector Check
Error
1.
Install the
ALC assembly
in
the
service
position.
Refer
to
the
procedure
\ALC
Board
Assembly
A10" in
Chapter 5
of
this
manual.
2.
Set the
synthesizer frequency
to
2
GHz
and
set
the
output
power
level
to
+10
dBm.
3.
Measure the
power at
the RF
OUTPUT
connector
of
the
synthesizer
.
Record
the
power
level
in
the
space
provided:
dBm
4.
Measure
the
ALC
CTRL
SIG
OUT
(1
to
20
GHz)
at
J3
pin
32
on
the
ALC
assembly (A10)
with
a
voltmeter
(connect
the
voltmeter
ground
lead
to
A3TP4).
Record
the
voltage
level
in
the
space
provided:
V
5.
The
RF
OUTPUT
should
be
>
8
dBm
and
the
ALC
CTRL
SIG
OUT should
be between
+1.85
volts
and
0
3.1
V
.
Refer
to
the
following
table
to
determine
what
action to
take.
Signal
Within
T
olerance?
(Y/N)
RF
OUTPUT
ALC
CTRL
SIG
OUT
A
ction.
Y Y Continue
with
procedure
.
Y N Replace
ALC assembly
.
N Y Continue
with
procedure
.
N N Replace
ALC
assembly
.
6.
Measure
the
voltage
at
J3
pin
8
with
a
voltmeter
(connect
the
ground
lead
to
A3TP4).
The
signal
should
be
between
0
0.200
volts
and
0
0.020
volts
.
If
the
signal
at
J3
pin
8
is
within
tolerance
,
replace
the
ALC
assembly
.
If
the
signal
at
J3
pin
8
is
not
within tolerance
,
continue
with
the
next
step
.
7.
Check
the
continuity
of
W28,
pin
8,
between
both
ends
of
the
ALC
ribbon
cable
.
If the
ribbon
cable
has
continuity
,
replace
the
output
module
(A8A1).
If
the
ribbon
cable
is
opened,
replace
the
ribbon
cable
.
T
o
Troubleshoot
the
Reference
Detector/Reference
Oscillator
Check
Error
1.
Install
the
ALC
assembly
in
the
service
position.
Refer to
the procedure
\ALC Board
Assembly
A10"
in
Chapter
5
of
this
manual.
2.
Set
the
synthesizer
frequency
to
2
GHz and
set the
output power
level to
+10 dBm.
3. Measure the reference oscillator output signal at J3
pin 2 on the ALC assembly (A10) with
an oscilloscope (connect the oscilloscope ground lead to A3TP5). The
reference oscillator
output signal should be 0.25 Vp-p
6
0.2 Vp-p at 1.2
MHz
6
0.10 MHz.
If the reference oscillator output signal (J3 pin 2) is within tolerance
, continue with the
next step
. If the reference oscillator output signal is not within tolerance
, replace the ALC
assembly.
4. Measure the signal at J3 pin 5 with a voltmeter
. The signal should be between
0
0.1 volts
and 0.080 volts. If the signal at J3 pin 5 is within tolerance, replace the ALC assembly.If
the signal at J3 pin 5 is not within tolerance, continue with the next step.
5. Check the continuity of W28, pin 2, between both ends of the ALC ribbon cable and pin
5 between both ends of the cable. If the ribbon cable has continuity, replace the output
module (A8A1). If the ribbon cable is opened, replace the ribbon cable.
1-28 Troubleshooting

Other manuals for Agilent Technologies HP 83711B

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Agilent Technologies HP 83711B and is the answer not in the manual?

Agilent Technologies HP 83711B Specifications

General IconGeneral
BrandAgilent Technologies
ModelHP 83711B
CategoryTest Equipment
LanguageEnglish

Related product manuals