Agilent Technologies 8360B User manual

Agilent Technologies
8360 B-Series Swept Signal Generator
8360 L-Series Swept CW Generator
Troubleshooting Guide
Part No. 08360-90124
Printed in USA
October 2000
Supersedes May 2000
Serial Number Prefixes:
This manual applies to any instrument with the following model
number and serial number prefix combinations. You may have to
modify this manual so that it applies directly to your instrument
version. Refer to the “Instrument History” chapter.
Agilent Technologies 83620B/22B/23B/24B/30B
3844A and Below
Agilent Technologies 83640B/50B
4040A and Below
Agilent Technologies 83623L/30L
3844A and Below
Agilent Technologies 83640L/50L
4040A and Below
title.f5s Page i Tuesday, July 10, 2001 12:58 PM

Notice
The information contained in this document is subject to
change without notice.
Agilent Technologies makes no warranty of any kind
with regard to this material, including but not limited to,
the implied warranties of merchantability and tness
for a particular purpose. Agilent Technologies shall not
be liable for errors contained herein or for incidental or
consequential damages in connection with the furnishing,
performance, or use of this material.
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is subject to restrictions as set forth in subparagraph (c)
(1) (ii) of the Rights of Technical Data and Computer
Software clause at DFARS 252.227-7013 for DOD
agencies, and subparagraphs (c) (1) and (c) (2) of the
Commercial Computer Software Restricted Rights clause
at FAR 52.227-19 for other agencies.

Certication
Agilent Technologies certies that this product met its
published specications at the time of shipment from the
factory. Agilent Technologies further certies that its
calibration measurements are traceable to the United
States National Institute of Standards and Technology,to
the extent allowed by the Institute's calibration facility,
and to the calibration facilities of other International
Standards Organization members.
Warranty
This Agilent Technologies instrument product is
warranted against defects in material and workmanship
for a period of one year from date of shipment. During
the warranty period, Agilent Technologies will, at its
option, either repair or replace products which prove to
be defective.
For warranty service or repair, this product must be
returned to a service facility designated by Agilent
Technologies. Buyer shall prepay shipping charges to
and Agilent Technologies shall pay shipping charges to
return the product to Buyer. However, Buyer shall pay all
shipping charges, duties, and taxes for products returned
to Agilent Technologies from another country.
Agilent Technologies warrants that its software and
rmware designated by Agilent Technologies for use with
an instrument will execute its programming instructions
when properly installed on that instrument. Agilent
Technologies does not warrant that the operation
of the instrument, or software, or rmware will be
uninterrupted or error-free.

Limitation of Warranty
The foregoing warranty shall not apply to defects
resulting from improper or inadequate maintenance
by Buyer, Buyer-supplied software or interfacing,
unauthorized modication or misuse, operation outside
of the environmental specications for the product, or
improper site preparation or maintenance.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED.
AGILENT TECHNOLOGIES SPECIFICALLY DISCLAIMS
THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE.
Exclusive Remedies
THE REMEDIES PROVIDED HEREIN ARE BUYER'S
SOLE AND EXCLUSIVE REMEDIES. AGILENT
TECHNOLOGIES SHALL NOT BE LIABLE FOR ANY
DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES, WHETHER BASED ON
CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.
Assistance
Product maintenance agreements and other customer
assistance agreements are available for Agilent
Technologies products.For any assistance, contact your
nearest Agilent Technologies Sales and Service Oce.
c
 Copyright Agilent Technologies 1996, 1997, 1999, 2000
All Rights Reserved. Reproduction, adaptation, or
translation without prior written permission is prohibited,
except as allowed under the copyright laws.
1400 Fountaingrove Parkway, Santa Rosa CA, 95403-1799,
USA

Safety Notes
The following safety notes are used throughout this
manual. Familiarize yourself with each of the notes and
its meaning before operating this instrument.
WARNING
Warning denotes a hazard. It calls attention to a
procedure which, if not correctly performed or
adhered to, could result in injury or loss of life.Do
not proceed beyond a warning note until the indicated
conditions are fully understood and met.
CAUTION
Caution denotes a hazard. It calls attention to a
procedure that, if not correctly performed or adhered
to, would result in damage to or destruction of the
instrument. Do not proceed beyond a caution sign until
the indicated conditions are fully understood and met.
v

General Safety Considerations
WARNING
These servicing instructions are for use by qualied
personnel only.To avoid electrical shock, do not
perform any servicing unless you are qualied to do
so.
The opening of covers or removal of parts is likely
to expose dangerous voltages. Disconnect the
instrument from all voltage sources while it is
being opened.
The detachable power cord is the instrument
disconnecting device. It disconnects the mains
circuits from the mains supply before other parts
of the instrument. The front panel switch is only a
standby switch and is not a LINE switch.
The power cord is connected to internal capacitors
that may remain live for 5 seconds after
disconnecting the plug from its power supply.
This is a Safety Class I product (provided with a
protective earthing ground incorporated in the
power cord). The mains plug shall only be inserted
in a socket outlet provided with a protective
earth contact. Any interruption of the protective
conductor, inside or outside the instrument,
is likely to make the instrument dangerous.
Intentional interruption is prohibited.
For continued protection against re hazard
replace line fuse only with same type and rating
(F 5 A/250 V). The use of other fuses or material is
prohibited.
vi

CAUTION
Always use the three-prong ac power cord supplied
with this instrument. Failure to ensure adequate earth
grounding by not using this cord may cause instrument
damage.
Before switching on this product, make sure that the
line voltage selector switch is set to the voltage of the
power supply and the correct fuse is installed. Assure
the supply voltage is in the specied range.
Manual Conventions
4
Front-Panel Key
5 This represents a key physically located
on the instrument.
NNNNNNNNNNNNNNNNNNNNNNN
Softkey This indicates a \softkey," a key whose
label is determined by the rmware of
the instrument.
Screen Text This indicates text displayed on the
instrument's screen.
vii

Instruments Covered By This Manual
This manual applies to instruments having a serial
number prex listed on the title page (behind the
\Documentation Map" tab). Some changes may have to
be made to this manual so that it applies directly to each
instrument; refer to Chapter 2, \Instrument History", to
see what changes may apply to your instrument.
A serial number label (see the gure) is attached to the
instrument's rear panel. A prex (four digits followed
by a letter), and a sux (ve digits unique to each
instrument), comprise the instrument serial number.
Typical Serial Number Label
viii

1
Troubleshooting
How to Use This Chapter
Menus
If you are not familiar with the menus in this instrument,
the Agilent Technologies 8360 B-Series Swept Signal
Generator/L-Series Swept CW Generator Service Guide
contain fold-out menu maps which are located behind
the \Menu Maps" tab. Use the map for reference as you
troubleshoot.
Some menus have more than one page of softkeys
. Select
the
NNNNNNNNNNNNNN
More softkey to see the next page of softkeys.
NNNNNNNNNNNNNN
More
is not included in the keystrokes given in this chapter.
Where to Begin Troubleshooting
Caution
Follow all troubleshooting procedures in the order given.
Done out of order, these procedures can miss critical
checks.You can waste time, and possibly replace the
wrong assembly.
Begin with \Instrument-Level Troubleshooting". This
section directs you to the appropriate troubleshooting
module.
Agilent 8360 Troubleshooting Introduction 1-1

Troubleshooting Modules
These modules pictorially guide you through the required
measurement steps (see the following example). Each
module covers one or more assemblies, and isolates a
problem to the assembly level.
Special Cases
This section covers problems not isolated in the
troubleshooting modules. \Special Cases" also contains an
instrument block diagram.
Troubleshooting Foldout
The troubleshooting foldout, referenced in the
troubleshooting modules, is located just prior to the
\Special Cases" tab.
1-2 Troubleshooting Introduction Agilent 8360

Equipment Required
Table 1-1 lists recommended troubleshooting equipment.
You may use any equipment that meets the critical
specications listed.
Instruments Without a Front Panel Keyboard
If your instrument does not have a keyboard, there are
two ways you can troubleshoot it:
1. Use the front panel emulation software, as instructed
in instrument-level troubleshooting. The software
itself is documented in the \Automated Tests" chapter
of the Agilent Technologies 8360 B-Series Swept Signal
Generator/L-Series Swept CW Generator Service
Guide .
2. Use a substitute front panel (to order
, see \Replaceable
Parts," in the Agilent Technologies 8360 B-Series Swept
Signal Generator/L-Series Swept CW Generator Service
Guide ).
Lifting the RF Deck Up Into the Service P
osition
In some of the troubleshooting procedures, you will be
required to lift the RF deck up into the service position.
Instructions for this procedure are documented in the
\Disassembly & Replacement Procedures" chapter of
the Agilent Technologies 8360 B-Series Swept Signal
Generator/L-Series Swept CW Generator Service Guide
as part of the \RF Deck Disassembly & Reassembly"
procedure.
Agilent 8360 Troubleshooting Introduction 1-3

Table 1-1. Recommended Troubleshooting Equipment
Instrument Critical Specications Recommended
HP/Agilent Model or
PN
Digital Voltmeter Range: 0 50 to +50 Vdc
Accuracy: 6 0.01%
Input Impedance:  10 M
3456A
3457A
Frequency Counter
1
Range: 0.01 to 26.5 GHz
Accuracy:
Time base: 6 1 count
Aging Range: 5 x 10
{10
5343A
Function Generator Sine Wave Amp:  1 Vrms
Sine Wave Freq: dc to 100 kHz
3325A
Oscilloscope Dual Channel
Bandwidth: dc to 300 MHz
Vert Sensitivity:  5 mV/Div
Horiz Sensitivity:
50 ns/Div
10 Magnier
Trigger: Event Triggerable
54111D
54110D
Oscilloscope Probes 10033A
Power Meter
1
Power Range: 1  W to 100 mW
Accuracy: 6 0.01%
436A
437B
438A
Power Sensor 0.01 to 0.05 GHz
0.05 to 20 GHz
0.05 to 40 GHz
8481A
8485A
8487A
Service Accessory Kit
2
08360-60060
1 May be replaced by a spectrum analyzer.
2 For ordering information, see \Replaceable Parts".
1-4 Troubleshooting Introduction Agilent 8360

1a
Instrument Level Troubleshooting
ILT.000 Begin
Troubleshooting
Follow the instructions in this section in the order given.
The equipment required to troubleshoot the synthesizer
is listed in Table 1-1 in Chapter 1. You may use any
equipment that meets the critical specications listed.
Go to paragraph ILT.100
Agilent 8360 Instrument Level Troubleshooting 1a-1

ILT.100
Can you safely connect the instrument to line power?
Go To A16.000 Continue
ILT.101
Turn on line power and make the following observations
during power up:
The amber standby light goes o.
The green power-on light comes on.
The fan operates. Because the fan is very quiet, you
may need to feel for airow.
Is line power on and does the unit appear safe to
operate?
Go To A16.000 Continue
Does the amber standby light go o, the green power-on
light come on, and the fan operate?
Go To A16.000 Continue
1a-2 Instrument Level Troubleshooting Agilent 8360

ILT.102
Does the synthesizer have a front panel with a display
and keyboard?
Go To ILT.5000 Continue
ILT.103
Enable factory preset:
1. Press SYSTEM 4
MENU
5 .
2.
Select
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Preset Mode Factory .
3. Press 4
PRESET
5 .
Could you complete the factory preset?
Go To ILT.6500 Continue
Agilent 8360 Instrument Level Troubleshooting 1a-3

ILT.104
Press 4
PRESET
5 .
Start(MHz) Stop(MHz) Power(dBm)
10.000000 20000.000000 INT: 0.00
---------------------------------------
Compare the synthesizer display to the gure shown.
Stop and start frequencies may vary depending on the
synthesizer model number. Also, ashing messages may
appear on the front panel. These messages include (but
are not limited to) OVEN , UNLOCK , LOW UNLVLED , and
OVRMOD . Do not consider these messages failures at this
time.
Is the display correct?
Go To ILT.6500 Continue
ILT.105
Has a PC board or assembly recently been repaired or
replaced? (If the instrument has passed self-tests since
the assembly was replaced, answer this question \No").
Continue Go To ILT.1000
ILT.106
Ensure that all external cables are removed from the
synthesizer and then perform a full self-test:
1. Press 4
SERVICE
5 .
2.
Select
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Selftest (Full) .
3. Wait about 1 minute for self-tests to run.
Continue with paragraph ILT.107.
1a-4 Instrument Level Troubleshooting Agilent 8360

ILT.107
**** ALL SELF-TESTS HAVE PASSED ! ****
No failures were found in any of the
tests on the self-test list.
....Options....
Abort Loop Log Cont
At the end of self-test, if the display shows ALL
SELF-TESTS HAVE PASSED ! continue with ILT.108.
Otherwise, follow the directions displayed on the
synthesizer.
ILT.108
Were the self-tests run to conrm correct operation of
the synthesizer? For example, were self-tests run after a
repair, as a periodic check, or as part of a calibration?
Continue Done
Agilent 8360 Instrument Level Troubleshooting 1a-5

ILT.109
Does the synthesizer have a front panel with a display
and keyboard, and do you want to test the display and
keyboard?
Go To ILT.111 Continue
Test the display by running self-test #257:
1. Press 4
PRESET
54
SERVICE
5 .
2.
Select
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Selftest Menu .
3. Press 4
257
54
ENTER
5 .
4.
Select
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Do Test #257 .To exit the test, press 4
PRESET
5 .
Do marching characters and a fast-moving cursor ( )
appear on the display?
Go To A21.9000 Continue
1a-6 Instrument Level Troubleshooting Agilent 8360

ILT.110
Test the keyboard by running self-test #21:
1. Press 4
SERVICE
5 .
2.
Select
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Selftest Menu .
3. Press 4
21
54
ENTER
5 .
4.
Select
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Do Test #21 .
5. Turn the rotary knob on the front panel clockwise and
counter clockwise.
Do an X and a dash ( - ) ash in the upper right corner of
the display?
Go To ILT.6000 Continue
Press all keys on the front panel except 4
PRESET
5 .
Do all dashes ( - ) change to X s?
Go To A1.9000 Continue
Agilent 8360 Instrument Level Troubleshooting 1a-7

ILT.111
If a password is set, you must know it to do this step.
View calibration constant #463 (hardware conguration):
1. Press 4
PRESET
54
SERVICE
5 .
2.
Select
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Adjust Menu .
3. If ENTER PASSWORD: 0 appears on the top line of the
display:
a. Enter the password.
b. Press 4
ENTER
5 .
c.
Select
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Adjust Menu .
4.
Select
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Calib Menu
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Select Cal .
5. Press 4
463
54
ENTER
5 .
6. Note the value of calibration constants #463 and #464.
7. Note the options listed on the rear panel of the
instrument.
8. Note the model number of the instrument.
9. Using the options listed on the rear panel, the model
number, and the table below, calculate the hardware
conguration calibration constants (see the following
examples).
1a-8 Instrument Level Troubleshooting Agilent 8360