Agilent Technologies 4395A User manual

Agilent 4395A Netw
ork/Spectrum/Impedance Analyzer
Service Manual
SERIAL NUMBERS
This man
ual applies directly to instrumen
ts with serial num
ber
prex JP1KE02197 or ab o
v
e, and MY41100220 or abo
v
e.
F
or additional imp ortan
tinformation about serial
n
um
bers, read \Serial Num
ber" in Appendix A.
Agilent Part No. 04395-90120
Printed in Japan August 2002
Fifth Edition

Notice
The information con
tained in this documen
tis sub ject to c
hange without notice.
This documen
tcon
tains proprietary information that is protected by copyrigh
t. All righ
ts are
reserved. No part of this documen
tma
ybephoto copied, repro duced, or translated to another
language without the prior written consen
tof the Agilen
tT
ec
hnologies Compan
y
.
Agilen
tT
ec
hnologies Japan, L
TD.
Kobe Instrument Division
1-3-2, Murotani, Nishi-Ku, Kobe-shi,
Hy
ogo, 651-2241 Japan
c
 Copyright 1998, 2000-2002 AgilentTechnologies Japan, Ltd.

Manual Printing History
The man
ual's prin
ting date and part n
um
ber indicate its curren
t edition. The prin
ting date
c
hanges when anew edition is prin
ted. (Minor corrections and updates that are incorp orated
at reprint do not cause the date to change.) The man
ual part n
um
ber c
hanges when extensive
technical c
hanges are incorp orated.
F
ebruary 1998
:::::::::::::
::::::::::::::::::::::
First Edition (P
art Num
ber 04395-90100)
Septem
ber 1998
::::::::::::::::::::::
:::::::::
Second Edition (P
art Num
ber 04395-90110)
June 2000
:::::::::::::::::
:::::::::::::::::::::
Third Edition (Part Number 04395-90110)
Marc
h2001
:::
::::::::::::::::::::::: ::::::
::::
F
ourth Edition (P
art Num
ber 04395-90110)
August 2002
:::::::::::::::::::::::::::::::::::::
Fifth Edition (P
art Num
ber 04395-90120)
iii

Safety Summary
The follo
wing general safet
yprecautions m
ust beobserv
ed during all phases of operation,
service, and repair of this instrumen
t. F
ailure to comply with these precautions or with
specic
W
ARNINGS elsewhere in this manual may impair the protection pro
vided b
ythe
equipment. In addition it violates safet
ystandards of design, man
ufacture, and in
tended use
of the instrumen
t.
The Agilent Te
chnologies Comp
any assumes no liability for the customer's failur
eto c
omply
with these r
e
quir
ements.
Note
4395A comply with INST
ALLA
TION CA
TEGOR
YIIand
POLLUTION
DEGREE 2inIEC1010-1. 4395A are INDOOR USE pro duct.
Note
LEDs in 4395A are Class 1in accordance with IEC825-1.
CLASS 1LED PR
ODUCT
Ground The Instrument
T
oa
v
oid electric sho c
khazard, the instrumen
tc
hassis and cabinet must beconnected to a
safet
y earth ground b
ythe supplied po
w
er cable with earth blade.
DO NOT Operate In An Explosiv
eAtmosphere
Do not operate the instrumen
tinthe presence of ammable gasses or fumes. Op eration of an
y
electrical instrumen
tin suc
han en
vironmen
tconstitutes adenite safety hazard.
Keep Aw
ayFrom Liv
eCircuits
Operating personnel m
ust not remo
v
einstrumen
tco
v
ers. Comp onen
treplacementand
internal adjustments must bemade b
yqualied main
tenance personnel. Do not replace
componen
ts with the po
wer cable connected. Under certain conditions, dangerous v
oltages
ma
yexist ev
en with the po
w
er cable remo
v
ed. T
oa
void injuries, alw
a
ys disconnect po
w
er and
discharge circuits before touc
hing them.
DO NOT Service Or Adjust Alone
Do not attempt in
ternal service or adjustmen
t unless another p erson, capable of rendering
rst aid and resuscitation, is presen
t.
iv

DO NOT Substitute Parts Or Modify Instrument
Because of the danger of in
tro ducing additional hazards, do not install substitute parts or
perform unauthorized mo dications to the instrumen
t. Return the instrumen
tto aAgilen
t
T
ec
hnologies Sales and Service Oce for service and repair to ensure that safet
y features are
maintained.
Dangerous Procedure W
arnings
W
arnings
,suc
has the example belo
w, precede poten
tially dangerous pro cedures throughout
this manual. Instructions con
tained in the w
arnings m
ust befollo
w
ed.
W
arning
Dangerous v
oltages, capable of causing death, are present in this instrument.
Use extreme caution when handling, testing, and adjusting this instrument.
Safety Symbols
General denitions of safet
ysym
bols used on equipmen
tor in man
uals are listed belo
w.
Instruction man
ual symbol: the pro duct is mark
ed with this sym
bol when it is
necessary for the user to refer to the instruction man
ual.
Alternating curren
t.
Direct curren
t.
On (Supply).
O (Supply).
In position of push-button switc
h.
Out position of push-button switc
h.
Frame (or c
hassis) terminal. A connection to the frame (c
hassis) of the
equipmen
twhic
hnormally include all exp osed metal structures.
This Warning sign denotes a hazard. It calls atten
tion to a pro cedure,
practice, condition or the like, whic
h, if not correctly p erformed or adhered to,
could result in injury or death to p ersonnel.
This Caution sign denotes a hazard. It calls atten
tion to a pro cedure,
practice, condition or the like, whic
h, if not correctly p erformed or adhered to,
could result in damage to or destruction of part or all of the pro duct.
This Note sigh denotes imp ortant information. It calls attention to a
pro cedure, practice, condition or the like, which is essential to highlight.
Axed to pro duct containing static sensitive devices use anti-static handling
pro cedures to prevent electrostatic discharge damage to component.
v

Certification
Agilent Tec
hnologies Compan
ycerties that this pro duct met its published specications
at the time of shipmen
tfrom the factory. Agilent Tec
hnologies further certies that its
calibration measurements are traceable to the United States National Institute of Standards
and T
ec
hnology
,to the exten
tallo
w
ed b
ytheInstitution's calibration facility
,or to the
calibration facilities of other In
ternational Standards Organization members.
W
arranty
This Agilen
tT
ec
hnologies instrument product is w
arran
ted against defects in material and
w
orkmanship for aperio dof one y
ear from the date of shipmen
t, except that in the case of
certain componen
ts listed in
Gener
al Information
of this man
ual, the w
arrant
y shall befor
the specied perio d. During the warran
t
yperio d, Agilen
tT
ec
hnologies Compan
ywill, at its
option, either repair or replace pro ducts that pro
v
eto bedefectiv
e.
F
or w
arran
t
yservice or repair, this pro duct m
ust bereturned to aservice facilit
ydesignated
b
yAgilen
tT
ec
hnologies. Buy
er shall prepa
yshipping charges to Agilen
tT
ec
hnologies and
Agilen
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ec
hnologies shall pa
yshipping c
harges to return the pro duct to Buy
er. Ho
wev
er,
Buy
er shall pa
yallshipping c
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t
T
ec
hnologies from another coun
try
.
Agilen
tT
ec
hnologies w
arran
ts that its soft
ware and rm
w
are designated b
yAgilen
t
T
ec
hnologies for use with an instrumen
twill execute its programming instruction when
property installed on that instrumen
t. Agilen
tT
ec
hnologies does not w
arran
tthat the
operation of the instrumen
t, or soft
w
are, or rm
w
are will beunin
terrupted or error free.
Limitation Of W
arranty
The foregoing w
arrant
y shall not apply to defects resulting from improp er or inadequate
main
tenance b
yBuy
er, Buy
er-supplied softw
are or interfacing, unauthorized mo dication or
misuse, operation outside the en
vironmen
tal specications for the pro duct, or improp er site
preparation or main
tenance.
No other warr
anty is expr
essedor implied. A
gilent Technologies sp
ecical ly disclaims the
implied warranties of mer
chantability and tness for a p
articular purp
ose.
vi

Exclusiv
e Remedies
The r
emedies pr
ovide
dher
ein ar
ebuyer's sole and exclusive reme
dies. A
gilent T
echnolo
gies
shal lnot b
eliable for any dire
ct, indir
ect, spe
cial, incidental, or c
onse
quential damages, whether
b
ased on c
ontract, tort, or any other le
gal the
ory.
Assistance
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ailable for
Agilen
tT
ec
hnologies pro ducts.
F
or an
yassistance, con
tact y
our nearest Agilen
tT
ec
hnologies Sales and Service Oce.
Addresses are pro
vided at the bac
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ual.
vii

Typeface Conventions
Bold
Boldface t
ype is used when aterm is dened. F
or example:
icons
are
sym
bols.
Italics Italic typeis used for emphasis and for titles of man
uals and other
publications.
Italic t
ypeis also used for k
eyboard en
tries when aname or av
ariable
m
ust bet
yped in place of the w
ords in italics. F
or example:
copy
lename
means to typethe w
ord
copy
,to t
ypeaspace, and then to
t
ypethe name of ale suc
has
file1
.
Computer
Computer fon
tis used for on-screen prompts and messages.
4
HARDKEYS
5
Labeled k
eys on the instrumen
tfron
tpanel are enclosed in
45
.
NNNNNNNNNNNNNNNNNNNNNNNNNN
SOFTKEYS
Softk
eys lo cated to the righ
tof the CR
Tare enclosed in
NNNNN
.
viii

Documentation Map
The following man
uals are a
v
ailable for the analyzer.
Operation Man
ual (Agilen
tP
art Num
ber 04395-90020)
The Operation Man
ual describes all function accessed from the fron
tpanel k
eys and softk
eys. It
also provides information on options and accessories a
v
ailable, specications, system
performance, and some topics ab out the analyzer's features.
Programming Man
ual (Agilen
tP
art Num
ber 04395-90021)
The Programming Man
ual sho
ws ho
wto write and use BASIC program to control the analyzer
and describ
es ho
wHP Instrumen
t BASIC works with the analyzer..
HP Instrumen
tBASIC Users Handb ook (Agilen
tP
art Num
ber E2083-90005)
The HP Instrument BASIC User's Handbook in
troduces y
ou to the HP Instrumen
tBASIC
programming language, provide some helpful hin
ts on getting the most use from it, and pro
vide
a general programming reference. It is divided in
to three books,
HP Instrument BASIC
Pr
o
gr
amming T
echniques
,
HP Instrument BASIC Interfac
eT
e
chniques
,and
HP Instrument
BASIC L
anguage R
efer
enc
e
.
Service Manual (Option 0BW only), (Agilen
tP
art Num
ber 04395-90120)
The Service Man
ual explains ho
wto adjust, troubleshoot, and repair the instrumen
t. This
man
ual is option 0BW only
.
ix

Contents
1. General Information
INTR
ODUCTION .............. . . . . . . . .....1-1
OR
GANIZA
TION OF SER
VICE MANUAL . . . . . . . ........1-1
PERF
ORMANCE TESTS . . .................... . 1-3
CALIBRA
TION CYCLE ............. . . . . . .....1-4
CALCULA
TION SHEET AND PERF
ORMANCE TEST RECORD . . . . .1-4
Calculation Sheet . .................... . . . . . 1-4
P
erformance T
est Record ........... . . . ........1-4
Ho
wto Use ........ . ...................1-4
RECOMMENDED TEST EQUIPMENT . . ..............1-5
Calibration Data Required for Step A
tten
uator ........ . . . . . 1-6
2. P
erformance T
ests
INTR
ODUCTION .............. . . . .........2-1
1. FREQUENCY A
CCURA
CY TEST (NA) ...............2-2
Description ...... . ......................2-2
Specication ............. . ..............2-2
T
est Equipmen
t.................. . ........2-2
Pro cedure ... . ........................ . 2-2
2. SOUR
CE LEVEL A
CCURA
CY/FLA
TNESS TEST (NA) . . . . . ...2-4
Description .................. . . . ........2-4
Specication . . ...................... . . . .2-4
T
est Equipmen
t.. . . . . . . . .................. 2-4
Pro cedure ............. . . . . . ...........2-4
3. NON-SWEEP PO
WER LINEARITY TEST (NA) ...........2-8
Description ... . . . . . . . .................. . 2-8
Specication ......... . . . . . . . ............2-8
Test Equipment ............ . . . . . . . . . . . . . ..2-8
Pro cedure ........ . ............ . .......2-8
4. PO
WER SWEEP LINEARITY TEST (NA) . . . . . . . . . . . . . . 2-11
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Specication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
T
est Equipmen
t. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Pro cedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
5. HARMONICS/NON-HARMONIC SPURIOUS TEST (NA) .. . . . . . 2-15
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Specication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Pro cedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
6. DC BIAS TEST (NA) (Option 001) . . . . . . . . . . . . . . . . . 2-18
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Specication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Contents-1

Test Equipment ... . . . ............ . . . . . . . . . 2-18
Pro cedure ........... . . . . . . . . . . . . . .....2-18
7. RECEIVER NOISE LEVEL TEST (NA) . . . . . . . . . . . ....2-21
Description . . . ............ . . . . . . . . . . . . . .2-21
Specication ..... . . . . . . . . . . . . . ..........2-21
T
est Equipmen
t. . . . . . . ............ . . . . . . . .2-21
Pro cedure ................ . . . . . . . ......2-21
8. INPUT CR
OSST
ALK TEST (NA) .. . . . . . . . .........2-24
Description . . ... . .................. . . . . . 2-24
Specication .............. . . . . . . . .......2-24
T
est Equipmen
t... . . . . . . . .................2-24
Pro cedure . . . .................. . . . . . . . .2-24
9. INPUT IMPED
ANCE TEST (NA) .......... . . . . . ...2-27
Description ...... . . . . . ..................2-27
Specication . .................... . . . . . ..2-27
T
est Equipmen
t............ . . . ............2-27
Pro cedure .......... . ..................2-27
10. ABSOLUTE AMPLITUDE ACCURA
CY TEST (NA) .........2-31
Description ............... . . . . . .........2-31
Specication . .................... . . . . . . . 2-31
T
est Equipmen
t... . . . .....................2-31
Pro cedure ............ . . . ..............2-31
11. MA
GNITUDE RA
TIO/PHASE D
YNAMIC A
CCURA
CY TEST (NA) ..2-36
Description .... . ........................2-36
Specication .......... . .................2-36
T
est Equipmen
t................ . ..........2-36
Pro cedure . . ........................ . ..2-37
12. MA
GNITUDE RA
TIO/PHASE FREQUENCY RESPONSE TEST (NA) .2-45
Description ................ . . . ..........2-45
Specication ...................... . . . ...2-45
T
est Equipmen
t. . . . . . . .................. . .2-45
Pro cedure . . ... . . . .................. . . . 2-45
13. DISPLA
YED A
VERA
GE NOISE LEVEL TEST (SA) .. . . . . . ..2-50
Description .................. . . . . . . . ....2-50
Specication . . . . . . .................. . . . .2-50
T
est Equipmen
t.. . . . . . . . . . . . . . ............2-50
Pro cedure .......... . ............ . .....2-50
14. AMPLITUDE FIDELITY TEST (SA) . . . . . . . . . . . . . . . . 2-53
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53
Specication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53
Test Equipmen
t. .. . . . . . . . . . . . . . . . . . . . . . . . . 2-53
Pro cedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-54
15. INPUT A
TTENUATOR SWITCHING UNCER
TAINTY TEST (SA) . . 2-58
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-58
Specication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-58
Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-58
Pro cedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-58
16. NOISE SIDEBANDS TEST (SA) . . . . . . . . . . . . . . . . . . 2-61
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-61
Specication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-61
Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-61
Contents-2

Pro cedure . . . . . . . . ............ . . . . . . . . . 2-61
17. AMPLITUDE A
CCURA
CY/FREQUENCY RESPONSE TEST (SA) ..2-65
Description ... . . . . . . . . . . . . . ............ . 2-65
Specication . . ............ . . . . . . . . . . . . . .2-65
T
est Equipmen
t... . . . . . . . . . . . . . ...........2-65
Pro cedure . . . . . . . . . ............ . . . . . . . . 2-65
18. SECOND HARMONIC DISTOR
TION TEST (SA) ..........2-71
Description ........ . . . . . . . ..............2-71
Specication . . . . . .................. . . . . . 2-71
T
est Equipmen
t............ . . . . . . . ........2-71
Pro cedure ..... . . . . . . . .................2-71
19. THIRD ORDER INTERMODULATION DISTOR
TION TEST (SA) ..2-73
Description ............... . . . . . .........2-73
Specication ..... . . . . . ..................2-73
T
est Equipmen
t................... . . . . . ...2-73
Pro cedure .............. . . . ............2-73
20. OTHER SPURIOUS (SA) ........ . ............2-76
Description ... . ........................ . 2-76
Specication .............. . . . . . .........2-76
T
est Equipmen
t. .................. . . . . . . . .2-76
Pro cedure ..... . . . .....................2-76
21. RESIDUAL RESPONSE TEST (SA) ......... . . . ....2-79
Description .................... . . . ......2-79
Specication ... . ........................ 2-79
T
est Equipmen
t........ . ..................2-79
Pro cedure .................. . ..........2-79
3. Calculation Sheet
INTR
ODUCTION . . . ...................... . 3-1
2. SOUR
CE LEVEL A
CCURA
CY/FLA
TNESS TEST . . . .......3-1
Lev
el Accuracy ... . . . . . . . .................3-1
Lev
el Flatness .......... . . . . . . . ..........3-2
3. NON-SWEEP PO
WER LINEARITY TEST ..............3-3
Reference (0 dBm) . . . . . . . . .................3-3
Non-Sw
eep P
o
w
er Linearit
y... . . . . . . . ...........3-3
4. PO
WER SWEEP LINEARITY TEST .......... . . . . . . 3-4
6. DC BIAS TEST (Option 001) .... . ........... . ...3-5
DC Bias V
oltage Lev
el Accuracy . . . . . . . . . . . . . . . . . . . 3-5
DC Bias Curren
tLev
el Accuracy . . . . . . . . . . . . . . . . . . . 3-5
7. RECEIVER NOISE LEVEL TEST . . . . . . . . . . . . . . . . . . 3-6
8. INPUT CR
OSSTALK TEST . . . . . . . . . . . . . . . . . . . . . 3-7
10 Hz
 Freq. > 1 kHz . . . . . . . . . . . . . . . . . . . . . . . 3-7
1 kHz
 Freq. >
100 kHz . . . . . . . . . . . . . . . . . . . . . . 3-7
100 kHz
 Freq.  500 kHz . . . . . . . . . . . . . . . . . . . . . 3-7
10. ABSOLUTE AMPLITUDE ACCURACY TEST . . . . . . . . . . . 3-8
Input R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Input A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Input B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
11. MAGNITUDE RATIO/PHASE DYNAMIC ACCURACY TEST . . . . 3-11
Step Attenuator Calibration Value at 50 MHz . . . . . . . . . . . . . 3-11
A/R Measurement . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Contents-3

B/R Measuremen
t . . . . . . . ............ . . . . . .3-11
13. DISPLA
YED A
VERA
GE NOISE LEVEL TEST .... . . . . . . . 3-12
Input R.. . ... . . . . . . . . . ............ . . . 3-12
Input A . . ............ . . . . . . . . . . . . . ...3-12
Input B..... . . . . . . . . . . . . . ............3-13
14. AMPLITUDE FIDELITY . . . . . . . . ............ . 3-14
Step A
tten
uator Calibration V
alue at 50 MHz ........ . . . . . 3-14
Amplitude Fidelit
y...... . . . . . . . ............3-14
Input R . . . . . .................. . . . . . .3-14
Input A.............. . . . . . . . ........3-14
Input B..... . . . . . . . .................3-15
Input R . . . .................. . . . . . . . .3-15
Input A.............. . . . . . ..........3-15
Input B..... . . . . . ...................3-15
15. INPUT A
TTENUA
TOR SWITCHING UNCER
T
AINTY TEST .....3-16
Step A
tten
uator Calibration V
alue at 50 MHz ...... . . . ....3-16
Input A
tten
uator Switc
hing Uncertain
t
y... . ............3-16
Input R.. . ........................ . .3-16
Input A.............. . . . . . ..........3-16
Input B . . . .................. . . . . . . . .3-17
17. AMPLITUDE A
CCURA
CY/FREQUENCY RESPONSE TEST . . . ..3-18
Input R............ . . . ...............3-18
Reference at 50 MHz ................. . . . ....3-18
A
tF
requencies
 1MHz .......................3-19
A
tF
requencies
<
1MHz ..... . .................3-20
Input A.................. . ...........3-20
Reference at 50 MHz ........................3-20
A
tF
requencies

1MHz ... . ...................3-21
A
tF
requencies
<
1MHz .......... . . . ..........3-22
Input B ...................... . . . .....3-22
Reference at 50 MHz . . . . . . . .................3-22
A
tFrequencies
 1MHz . . . .................. . .3-23
A
tF
requencies
<
1MHz ..... . . . . . .............3-24
18. THIRD ORDER HARMONIC DISTOR
TION TEST .........3-24
4. P
erformance T
est Record
1. FREQUENCY A
CCURA
CY TEST .... . ........... . .4-1
without Option 1D5 . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
with Option 1D5 . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
2. SOUR
CE LEVEL A
CCURACY/FLATNESS TEST . . . . . . . . . . 4-2
Lev
el Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Level Flatness . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
3. NON SWEEP PO
WER LINEARITY TEST . . . . . . . . . . . . . . 4-3
4. PO
WER SWEEP LINEARITY TEST . . . . . . . . . . . . . . . . 4-3
5. HARMONICS/NON-HARMONIC SPURIOUS TEST . . . . . . . . . . 4-4
Harmonics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Non-Harmonic Spurious . . . . . . . . . . . . . . . . . . . . . . . 4-4
6. DC BIAS ACCURACY TEST . . . . . . . . . . . . . . . . . . . . 4-5
7. RECEIVER NOISE LEVEL TEST . . . . . . . . . . . . . . . . . . 4-6
8. INPUT CROSSTALK TEST . . . . . . . . . . . . . . . . . . . . . 4-7
10 Hz  Freq. < 1kHz . . . . . . . . . . . . . . . . . . . . . . . 4-7
Contents-4

1 kHz
 F
req. <
100 kHz . . ............ . . . . . . . . 4-7
100 kHz

F
req.

500 MHz ..... . . . . . . . . . . . . . ...4-7
9. INPUT IMPED
ANCE TEST . . . . . . . . . . . . ........4-7
100 kHz
 F
req.

100 MHz ........ . . . . . . . . . . . . . 4-7
100 MHz
<
F
req.

500 MHz . . . . . . . . . . . . ........4-7
10. ABSOLUTE AMPLITUDE ACCURA
CY TEST . . . . .......4-8
Input R................ . . . . . . . .......4-8
Input A....... . . . . . . . ................4-9
Input B . . . . . .................. . . . . . . . 4-10
11. MA
GNITUDE RA
TIO/PHASE D
YNAMIC A
CCURA
CY TEST ....4-11
A/R Measuremen
t.... . . . . . . . ..............4-11
B/R Measurement . . .................. . . . . . 4-12
12. MA
GNITUDE RA
TIO/PHASE FREQUENCY RESPONSE TEST ...4-13
A/R Measuremen
t.... . . . . . ................4-13
B/R Measurement .................... . . . . . 4-13
13. DISPLA
YED A
VERA
GE NOISE LEVEL TEST ....... . . . .4-13
Input R.......... . ...................4-13
Input A.. . ........................ . ..4-14
Input B.............. . . . . . ...........4-14
14. AMPLITUDE FIDELITY TEST . .................4-14
Input R..... . . . ...................... 4-15
Input A............ . . . ...............4-15
Input B................... . . . ........4-15
15. INPUT A
TTENUA
TOR SWITCHING UNCER
T
AINTY TEST .....4-16
Input R.......... . ...................4-16
Input A.................. . ...........4-16
Input B. . ........................ . ...4-16
16. NOISE SIDEBANDS TEST ...... . .............4-17
Input R............... . . . ............4-17
17. AMPLITUDE A
CCURA
CY/FREQUENCY RESPONSE TEST .....4-18
Input R.. . . . . . . . .................. . . . 4-18
Lev
el Accuracy . . . . . . . .................. . . 4-18
F
requency Response ........ . . . . . ............4-18
Input A................. . . . . . . . ......4-19
Level Accuracy . . . . . .................. . . . . 4-19
F
requency Response .. . . . . . . . . . . . . . ..........4-20
Input B.......... . ............ . ......4-21
Level Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
F
requency Response . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
18. SECOND HARMONIC DISTOR
TION TEST . . . . . . . . . . . . . 4-23
19. THIRD ORDER INTERMODULA
TION DISTOR
TION TEST . . . . . 4-23
20. OTHER SPURIOUS TEST . . . . . . . . . . . . . . . . . . . . . 4-24
21. RESIDUAL RESPONSE TEST . . . . . . . . . . . . . . . . . . . 4-24
Contents-5

5. Adjustmen
ts
In
tro duction .......... . . . . . . . . . . . . . ......5-1
Safet
yConsiderations . . . . . . . . . . . . . . ...........5-1
Required Con
troller . ............ . . . . . . . . . . . . . 5-2
Windo
ws NT PC (P
ersonal Computer) . . . . . . . . . . . . . ...5-2
Soft
ware Requirements . . . . . . ............ . . . . . . 5-2
Required T
est Equipmen
t............. . . . . . . . ...5-3
Order of Adjustmen
ts ..... . . . . . . . .............5-3
P
erforming Adjustmen
ts . . . .................. . . . 5-4
Setting Up the System ............ . . . . . . . .....5-4
Preparation for Using the Adjustmen
tProgram . . . . . . . .......5-6
Installing an GPIB Card (82340 or 82341) ...............5-6
Installing HP VEE for Windo
ws NT ......... . . . . . ....5-6
Installing Adjustmen
tProgram in
to Your PC . . . ...........5-6
Getting Started . .................... . . . . . ..5-6
1. F
requency Reference Adjustmen
t.......... . . . ......5-8
Required Equipmen
t......... . ..............5-8
Pro cedure .. . ........................ . .5-8
2. Ov
en Reference Adjustmen
t(Option 1D5) ........ . . . . . ..5-10
Required Equipment . . .................. . . . .5-10
Pro cedure ..... . . . .....................5-10
Required Equipmen
t........... . . . ..........5-10
Pro cedure ................... . . . .......5-10
3. Local D
AC Adjustmen
t...................... . 5-13
Required Equipmen
t......... . ..............5-13
Pro cedure .................. . ..........5-13
4. Source Po
w
er Adjustmen
t.................... . .5-14
Required Equipmen
t....... . ................5-14
Pro cedure ............... . . . ...........5-14
5. Source Flatness Adjustmen
t................... . .5-15
Required Equipmen
t. . . . . . . . ................5-15
Pro cedure . . ... . . . .................. . . . 5-15
6. Input DC Oset Adjustmen
t...... . . . . . ..........5-16
Required Equipmen
t................ . . . . . . . .5-16
Pro cedure . . ... . .................. . . . . . 5-16
7. Input Local Null Adjustment . . . . . . . . . . . . ........5-18
Required Equipmen
t......... . ............ . .5-18
Pro cedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
8. IF 24 dB Gain/Phase Adjustmen
t . . . . . . . . . . . . . . . . . . 5-20
Required Equipmen
t . . . . . . . . . . . . . . . . . . . . . . . . 5-20
Pro cedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
9. Receiv
er Gain Adjustmen
t. . . . . . . . . . . . . . . . . . . . . . 5-22
Required Equipmen
t . . . . . . . . . . . . . . . . . . . . . . . . 5-22
Pro cedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22
10. IF 8 dB/16 dB Gain Adjustment . . . . . . . . . . . . . . . . . . 5-25
Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . 5-25
Pro cedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25
11. Temp erature Adjustment. . . . . . . . . . . . . . . . . . . . . . 5-26
Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . 5-26
Pro cedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
12. Receiver Flatness Adjustment. . . . . . . . . . . . . . . . . . . . 5-27
Contents-6

Required Equipmen
t . . . . . . . ............ . . . . . 5-27
Pro cedure ........... . . . . . . . . . . . . . .....5-27
13. Receiv
er Atten
uator Adjustmen
t . . . . . . . . . .........5-29
Required Equipmen
t . ............ . . . . . . . . . . . 5-29
Pro cedure ..... . . . . . . . . . . . . . ...........5-29
14. IF BPF Flatness Adjustmen
t . . . . . ............ . . . 5-30
Required Equipmen
t............... . . . . . . . ..5-30
Pro cedure ....... . . . . . . . ...............5-30
15. DC Bias Adjustment (Option 010) .................. 5-31
Required Equipmen
t............. . . . . . . . ....5-31
Pro cedure ..... . . . . . . . .................5-31
6. T
roubleshooting
INTR
ODUCTION .......... . . . . . ...........6-1
TR
OUBLESHOOTING SUMMARY . . . . ..............6-1
ST
AR
THERE ............... . . . . . . . ......6-3
INSPECT THE PO
WER ON SEQUENCE ...... . . . .......6-4
Chec
kthe F
an .... . ......................6-4
Check the F
rontP
anel LEDs and Displa
ys .............. . 6-4
Chec
kError Message .... . . . . . . . .............6-4
INSPECT THE REAR P
ANEL FEA
TURE ........ . . . . . . . 6-5
Check the GPIB In
terface .................. . . . .6-5
Chec
kthe P
arallel Interface . . ...................6-5
Chec
kthe mini DIN Keyboard Connector ....... . .......6-5
In
ternal T
ests F
ailure T
roublesho oting ............. . ....6-6
Chec
kthe P
ow
er-On Selftest .....................6-6
Execute All In
ternal T
ests ....... . ..............6-6
Execute the Individual T
est ............... . .....6-6
External Tests Failure T
roublesho oting .................6-8
P
erformance T
ests F
ailure T
roublesho oting . . . .............6-9
P
erform Adjustmen
ts and Correction Constan
ts . . . . . ........6-9
7. P
o
w
er Supply Troublesho oting
INTR
ODUCTION ............ . . . . . .........7-1
ST
ART HERE ................. . . . . . . . ....7-3
1. Chec
ktheFan is Rotating . . . . .............. . . . 7-3
2. Chec
kthe A50 SHUTDO
WN LED ............ . ....7-3
A50 Shutdown LED . . . . . . . . . . . . . . . . . . . . . . . . 7-4
3. Chec
k the A1 +5 VD LED . . . . . . . . . . . . . . . . . . . . 7-4
Measure the A1 +5 VD V
oltage . . . . . . . . . . . . . . . . . . 7-5
FIND OUT WHY THE F
AN IS NOT R
OTATING . . . . . . . . . . . . 7-6
1. Chec
k the Line V
oltage, Selector Switc
h Setting, and F
use . . . . . . . 7-6
2. Chec
k the A50 SHUTDO
WN LED . . . . . . . . . . . . . . . . . 7-6
FIND OUT WHY THE A50 SHUTDO
WN LED IS OFF . . . . . . . . . 7-7
1. Disconnect the Cable from the A1J10 . . . . . . . . . . . . . . . . 7-7
2. RemoveAssemblies . . . . . . . . . . . . . . . . . . . . . . . . 7-7
3. Disconnect the Cable from the A9J2 . . . . . . . . . . . . . . . . 7-7
FIND OUT WHY THE A1 +5 VD LED IS NOT ON STEADILY . . . . . 7-9
1. Check the A40 Pre-Regulator . . . . . . . . . . . . . . . . . . . 7-9
2. Check the A50 DC-DC Converter . . . . . . . . . . . . . . . . . 7-9
3. Disconnect Cables on the A1 CPU . . . . . . . . . . . . . . . . . 7-10
Contents-7

4. Remo
ve Assemblies . . . . ............ . . . . . . . .7-11
5. Remo
v
eAssem
blies ....... . . . . . . . . . . . . . ....7-11
TR
OUBLESHOOT THE FAN AND THE A50 DC-DC CONVERTER . . .7-12
1. T
roublesho ot the F
an ......... . . . . . . . . . . . . . .7-12
2. T
roublesho ot the A50 DC-DC Con
verter . . . . . . . . . . ....7-13
8. Digital Con
trol T
roubleshooting
INTR
ODUCTION ............ . . . . . . . .......8-1
A1 CPU Replacemen
t. . . . . . . . .................8-3
FIRMW
ARE INST
ALLA
TION ................ . . . . . 8-4
Ordering the Firmw
are Disk
ette ..... . . . . . . . .......8-4
Installing the Firmw
are . . . . . .................. 8-4
ST
AR
THERE ................. . . . . . ......8-6
1. Chec
kthe P
o
w
er-On Sequence ... . . . . . ...........8-6
Chec
kthe
4
Ch 1
5
and
4
Ch 2
5
Operations . . . . . ...........8-6
Chec
kthe A1 Eigh
tLEDs ............ . . . . . . . ..8-6
2. Chec
kError Messages ....... . . . .............8-7
3. Chec
kthe A1 DRAM and Flash Memory . .............8-8
4. Chec
ktheA1 V
olatile Memory .................. . 8-9
5. Chec
kthe A30 F
ron
t Keyboard . . . . . .............8-10
6. Chec
kthe A53 FDD ......... . . . . . . . .......8-10
7. Chec
kthe A32 I-BASIC In
terface and the mini DIN Keyboard .....8-10
8. Chec
kthe A33 EXT I/O Interface .................8-11
TR
OUBLESHOOT THE A51 GSP and A52 LCD ....... . .....8-12
1. Run the In
ternal T
est 3: A51 GSP
............ . .....8-12
2. Chec
kthe A52 LCD(Liquid Crystal Display) .............8-12
9. Accessories T
roubleshooting
INTR
ODUCTION .......... . . . .............9-1
VERIFY OPERA
TIONS ........ . . . .............9-2
Using 75 Connectors with 50 Connectors .......... . . . .9-2
Large Spurious Signals in the Spectrum Measuremen
t..........9-2
Odd Appearing Opens and Shorts in the Net
work Measuremen
t......9-2
INSPECT THE CONNECTORS ........... . . . . . ....9-3
INSPECT THE A
CCESSORIES ................. . . . 9-4
Verify the Prob eP
ow
er . . . .............. . . . . . . 9-4
Inspect the T
est Set . . ............ . ..........9-5
Inspect the Calibration Kit . . . . . . . . . . . . . . . . . . . . . . 9-5
Verify Shorts and Opens . . . . . . . . . . . . . . . . . . . . . . 9-5
10. Replaceable P
arts
Intro duction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
Direct Mail Order System . . . . . . . . . . . . . . . . . . . . . . 10-1
Exchange Assem
blies . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
Replaceable Parts List . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
Contents-8

11. P
ost Repair Pro cedures
INTR
ODUCTION ........... . . . . . . . . . . . . . ..11-1
POST REP
AIR PROCEDURES . . . . . . . . . . . . ........11-1
A. Man
ual Changes
In
tro duction . . . . . . . . . . . . . ............ . . . .A-1
Man
ual Changes . . .................. . . . . . . . A-1
Change 1............ . . . . . . . ...........A-3
Change 2... . . . . . . . .................. . .A-7
Change 3 . .................. . . . . . . . ....A-8
Change 4.......... . . . . . . . .............A-9
F
use Selection . . . . . . . .................. . . A-10
Change 5................... . . . . . ......A-11
Change 6.......... . . . . . ...............A-13
Serial Num
ber . . . . .................... . . . . A-17
B. P
o
w
er Requiremen
t
Replacing F
use ...... . ...................B-1
F
use Selection ......... . . . . . . . ...........B-1
P
o
w
er Requiremen
ts ............. . . . . . . . ......B-2
P
o
wer Cable . ...................... . . . ..B-2
Messages
Error Messages in Alphabetical Order ..... . ............
Messages-1
Error Messages in Numerical Order .............. . ....
Messages-16
Index
Contents-9

Figures
2-1. F
requency Accuracy T
est Setup ............... . . . . . 2-3
2-2. Source Lev
el Accuracy T
est Setup ..... . . . . . . . .......2-5
2-3. Source Lev
el Flatness Test Setup .. . ................2-6
2-4. Non-sw
eep P
o
w
er Linearit
yT
est Setup .......... . . . . . ..2-9
2-5. P
o
w
er Sw
eep Linearit
yT
est Setup . . . . . . ............2-12
2-6. Harmonics T
est Setup . . . . ....................2-15
2-7. DC Bias V
oltage Lev
el T
est Setup .......... . . . . . ....2-18
2-8. DC Bias Curren
tLev
el T
est Setup ... . . . ............2-20
2-9. Receiv
er Noise Lev
el T
est Setup . ..................2-21
2-10. Input Crosstalk T
est Setup .................... . .2-24
2-11. Impedance T
est Setup .... . . . . . ...............2-28
2-12. Absolute Amplitude Accuracy T
est Setup 1......... . . . . . 2-32
2-13. Absolute Amplitude Accuracy T
est Setup 2..............2-34
2-14. A/R Magnitude Ratio/Phase Dynamic Accuracy T
est Setup 1 . .....2-37
2-15. A/R Magnitude Ratio/Phase Dynamic Accuracy Test Setup 2 ......2-39
2-16. B/R Magnitude Ratio/Phase Dynamic Accuracy T
est Setup 1......2-41
2-17. B/R Magnitude Ratio/Phase Dynamic Accuracy T
est Setup 2......2-43
2-18. A/R Magnitude Ratio/Phase F
requency Response T
est Setup ......2-46
2-19. B/R Magnitude Ratio/Phase F
requency Response T
est Setup ... . ...2-48
2-20. Av
erage Noise Lev
el T
est Setup ............ . .......2-50
2-21. Amplitude Fidelity Test Setup 1...................2-54
2-22. Input A
tten
uator Accuracy T
est Setup . . . . .............2-59
2-23. Noise Sidebands T
est Setup ......... . . . . . . . .....2-62
2-24. F
requency Response T
est Setup 1............... . . . .2-66
2-25. F
requency Response Test Setup 2 . . .................2-68
2-26. F
requency Response T
est Setup 3.... . . . . . . . ........2-69
2-27. Second Harmonics Distortion T
est Setup ............. . . . 2-72
2-28. Third Order Intermodulation Distortion Test Setup . . . ........2-74
2-29. Other Spurious T
est Setup . . ........... . ........2-77
2-30. Residual Response T
est Setup . . . . . . . . . . . . . . . . . . . . 2-79
5-1. Adjustmen
t Hardw
are Setup . . . . . . . . . . . . . . . . . . . . . 5-5
5-2. List Bo
x. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
5-3. F
requency Reference Adjustmen
t Setup . . . . . . . . . . . . . . . . 5-8
5-4. F
requency Reference Adjustmen
t Lo cation .. . . . . . . . . . . . . . 5-9
5-5. Ov
en Reference Adjustmen
t Setup . . . . . . . . . . . . . . . . . .5-11
5-6. Location of the O
VEN FREQ ADJ. . . . . . . . . . . . . . . . . . . 5-11
5-7. Source Power Adjustment Setup . . . . . . . . . . . . . . . . . . . 5-14
5-8. Input DC Oset Adjustment Location . . . . . . . . . . . . . . . . . 5-17
5-9. Input Lo cal Null Adjustment Lo cation . . . . . . . . . . . . . . . . . 5-19
5-10. IF 24 dB Gain/Phase Adjustment Setup . . . . . . . . . . . . . . . . 5-20
5-11. IF 24 dB Gain/Phase Adjustment Lo cation . . . . . . . . . . . . . . 5-21
5-12. Receiver Gain Adjustment Setup . . . . . . . . . . . . . . . . . . . 5-23
Contents-10