Agilent Technologies E8285A CDMA
Mobile Station Test Set
Assembly Level Repair
Firmware Version: A.01.29 to A.02.04 (100-1000, 1700-2000 MHz)
Firmware Version: A.04.53 and above (800-1000, 1700-2000 MHz)
CALL CONTROL UTILITIES
Answer Print Printer I/O config Help
Call/
End/
Page
USER
K1'
K1
K2'
K2
K3'
K3
Assign
K4
Release
K5
Shift
Register Tests Config Previous Message
Release
CDMA SCREENS
Cell config Spectrum SMS
Call
Gen
control
MS report MS FER
RX test
Ref set
Increment
10
Low limit
IBASIC
reset
Cancel
Authen-
control
tication
TX test
TX
range
DATA FUNCTIONS DATA
Meter
Average
Increment
Increment
set
x 10
High limit
ANALOG SCREENS
Call
Duplex Spectrun
control
RX test TX test AF
7 8 9
4 5 6
1 2 3
0 . +/-
Yes
No
Ratio
On/Off
W
DUPLEX OUTRF IN/OUTPOWER ANTENNA IN VOLUME AUDIO OUT AUDIO IN
analyzer
analyzer
%dBHz
High
Preset
Hold
Meas
reset
Address
Local
Save
Recall
Enter
Ghz
dBm
dB
MHz
V
%
kHz
mV
s
mW
µV
ms
Low
DO NOT apply RF
when in standby
Max power 2.5W
Max power 60 mW Max 12V peak Max
Agilent Part Number E8285-90033
Revision C
Printed in U.S.A.
June 2000
42V peak
Notice
Information contained in this document is subject to change without
notice.
All Rights Reserved. Reproduction, adaptation, or translation without
prior written permission is prohibited, except as allowed under the
copyrigh t laws.
This material may be reproduced by or for the U.S. Government
pursuant to the Copyright License under the cl ause at DFARS
52.227-7013 (APR 1988).
© Copyright 2000 Agilent Technologies
2
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Manufacturer’s Declaration
This statement is provided to comply with the requirements of the
German Sound Emission Directive, from 18 January 1991.
This product has a sound pres sur e emission ( at t he ope rato r posit ion) <
70 dB(A).
• Sound Pressure Lp < 70 dB(A).
• At Operator Position.
• Normal Operation.
• According to ISO 7779:1988/EN 27779:1991 (Type Test).
Herstellerbescheinigung
Diese Information steht im Zusammenhang mit den Anf orderungen der
Maschinenlärminformationsverordnung vom 18 Januar 1991.
• Schalldruckpegel Lp < 70 dB(A).
•Am Arbeitsplatz.
• Normaler Betr i e b.
• Nach ISO 7779:1988/EN 27779:1991 (Typprüfung).
3
Safety Considerations
!
GENERAL
This product and related documentation must be reviewed for
familiarization with safety markings and instructions before operation.
This product has been designed and tested in accordance with IEC
Publication 1010, “Safety Requirements for Electronic Measuring
Apparatus,” and has been s u pplied in a safe condition. This instruction
documentation contains information and warnings which must be
followed by the user to ensure safe operation and to maintain the
product in a safe condition.
SAFETY EARTH GROUND
A uninterruptible safety earth ground must be provided fro m the main
power source to the product input wiring terminals, power cord, or
supplied power cord set.
CHASSIS GROUND TERMINAL
To prevent a potential shock hazard, always connect the rear -panel
chassis ground terminal to earth ground when operating this
instrument from a dc power source.
SAFETY SYMBOLS
Indicates instrument damage can occur if indicated oper ating limits are
exceeded. Refer to the instructions in this guide.
Indicates hazardous voltages.
Indicates earth (ground) terminal
WARNING A W ARNING note denotes a hazard. It calls attention to a
procedure, practice, or the like, which, if not correctly
performed or adhered to, could result in personal injury. Do not
proceed beyond a W ARNING s ign until the indicated conditi ons
are fully understood and met.
CAUTION A CAUTION note denotes a hazard. It calls attention to an operation
procedure, practic e, or the like, which, if not correctly performed or
adhered to, could result in damage to or destruction of part or all of t he
product. Do not proceed beyond an CAUTION note until the indicated
conditions are fully understood and met .
4
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Safety Considerations for this Instrument
WARNING This product is a Safety Class I instrument (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 of the product is li kely to make the product
dangerous. Intentional interruption is prohibited.
Whenever it is likely that the protection has been impaired, the
instrument must be made inoperative and be secured against any
unintended operation.
If this instrument is to be energized via an autotransformer (for
voltage reduction), make sure the common terminal is connected to
the earth terminal of the power source.
If this product is not us ed as specified, the protec tion provid ed by t he
equipment could be impaired. This product must be used in a normal
condition (in which all means for protection are intact) only.
No operator serviceable parts in this product. Refer servicing to
qualified personnel. To prevent electrical shock, do not remove
covers.
Servicing instructions are for use by qualified personnel only. To
avoid electrical shock, do not perform any servicing unless you are
qualified to do so.
The opening of covers or removal of parts is likely to expose
dangerous voltages. Disconnect the product from all voltage sources
while it is being opened.
Adjustments described in the manual are performed with power
supplied to the instrument while protective covers are removed.
Energy available at many points may, if contacted, result in personal
injury.
The power cord is connected to internal capacitors that my remain
live for 5 seconds after disconnecting the plug from its power supply.
For Continued protection against fire hazard, replace the line fuse(s)
only with 250 V fuse(s) or the same current rating and type (for
example, normal blow or time delay). Do not use repaired fuses or
short circuited fuseholder s.
5
CAUTION Always use the three -prong ac power cord supplied with this product.
Failure to ensure adequate earth grounding by not using this cord may
cause product damage.
This product is designed for use in Installation Category II and
Pollution Degree 2 per IEC 1010 and IEC 664 respectively. For indoor
use only.
This product has autoranging line voltage input, be sure the supply
voltage is within the specified range.
V entilation Require ments: When installing the prod uct in a cabinet, the
convection into and out of the product must not be restri cted. The
ambient temperature (outside the cabinet) must be less than the
maximum operating temperature of the product by 4° C for every 100
watts dissipated in the cabinet. If the total power dissipated in the
cabinet is greater than 800 watts, then forced convection must be used.
6
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Product Markings
CE - the CE mark is a registered trademark of the European
Community. A CE mark accompanied by a year indicated the year the
design was proven.
CSA - the CSA mark is a registered trademark of the Canadian
Standards Association.
7
Agilent Technologies Warranty Statement
for Commercial Products
E8285A CDMA Mobile Station T es t Set
Duration of Warranty: One Year
1. Agilent warrants Ag ilent hardwar e, a ccessories and supplies aga inst
defects in materials and workmans hip for the period sp ecified above .
If Agilent receives notice of such defect s during the w arranty peri od,
Agilent will, at its option, either repair or replace products which
prove to be defective. Replacement prod ucts may be either new or
like-new.
2. Agilent warrants that Agilent software will not fail to execute its
programming instructions, for the period specified above, due to
defects in material and workmanshi p when properly installed and
used. If Agi l en t re ceives notic e o f su ch d e fe cts during the war ra n ty
period, Agilent will replace softwa re media which does not execute
its programming instructions due to such defects.
3. Agilent does not warrant that the operation of Agilent products will
be uninterrupted or error free. If Agilent is unable, within a
reasonable time, to repair or replace any product to a condition as
warranted, customer will be enti tled to a refund of the purchase
price upon prompt return of the product.
4. Agilent products may contain remanufactured parts equivalent to
new in performance or may have been subject to incident al use.
5. The warranty period begins on the date of delivery or on the date of
installation if installed by Agilent. If customer schedules or delays
Agilent installation more than 30 days after delivery, warranty
begins on the 31st day from delivery.
6. Warranty does not apply to defects resulting from (a) improper or
inadequate maintenance or calibration, (b) sof tware, interfacing,
parts or supplies not supplied by Agilent, (c) unauthorized
modification or misuse, (d) operation outside of the published
environmental specifications for the product, or (e) improper site
preparation or maintenance.
7. TO THE EXTENT ALLOWED BY LOCAL LAW, THE ABOVE
WARRANTIES ARE EXCLUSIVE AND NO OTHER WARRANTY
OR CONDITION, WHETHER WRITTEN OR ORAL IS
EXPRESSED OR IMPLIED AND AGILENT SPECIFICALLY
DISCLAIMS ANY IMPLIED WARRANTIES OR CONDITIONS OR
MERCHANTABILITY, SATISFACTORY QUALITY, AND FITNESS
FOR A PARTICULAR PURPOSE.
8
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8. Agilent will be liable for damage to tangibl e property per incident up
to the greater of $300,000 or the actual amount paid for the product
that is the subject of the claim, and for damages for bodily injury or
death, to the extent that all suc h damages are d etermined by a cou rt
of competent jurisdiction to have been directly caused by a defective
Agilent product.
9. TO THE EXTENT ALLOWED BY LOCAL LAW, THE REMEDIES
IN THIS WARRANTY STATEMENT ARE CUSTOMER’S SOLE
AND EXCLUSIVE REMEDIES. EXCEPT AS INDICATED ABOVE,
IN NO EVENT WILL AGILENT OR ITS SUPPLIERS BE LIABLE
FOR LOSS OF DATA OR FOR DIRECT, SPECIAL, INCIDENTAL,
CONSEQUENTIAL (INCLUDING LOST PROFIT OR DATA), OR
OTHER DAMAGE, WHETHER BASED IN CONTRACT, TORT, OR
OTHERWISE.
FOR CONSUMER TRANSACTIONS IN AUSTRALIA AND NEW
ZEALAND: THE WARRANTY TERMS CONTAINED IN THIS
STATEMENT, EXCEPT TO THE EXTENT LAWFULLY
PERMITTED, DO NOT EXCLUDE RESTRICT OR MODIFY AND
ARE IN ADDITION TO THE MANDATORY STATUTORY RIGHTS
APPLICABLE TO THE SALE OF THIS PRODUCT TO YOU.
9
DECLARATION OF CONFORMITY
according to ISO/IEC Guide 22 and EN 45014
Manufacturer’s Name:
Agilent Technologies
Manufacturer’s Address:
Spokane Division
24001 E. Mission Avenue
Liberty Lake, Washington 99019-9599
USA
declares that the product
Product Name:
Model Number:
Product Options:
CDMA Mobile Station Test Set
Agilent Technologies E8285A
All
conforms to the following Product specifications:
Safety: IEC 61010-1:1990+A1+A2 / EN 61010-1:1993+A2
EMC: CISPR 11:1990/EN 55011:1991- Group 1, Class A
IEC 61000-3-2:1995 / EN 61000-3-2: 1995
EN 50082-1:1992
IEC 801-3:1984 3V/m
IEC 801-4:1988 0.5 kV Sig. Lines, 1 kV Power Lines
Supplementary Information:
This product herewith complies with the requirements of
the Low Voltage Directive 73/23/EEC and the EMC
Directive 89/336/EEC and carries the CE-marking
accordingly.
Spokane, Washington USA November 20, 1998
European Contact: Your local Agilent Technologies and Service Office or Agilent Technologies GmbH
Department ZQ/Standards Europe, Herrenbe rger Strasse 130, D-71034 Böbl inger, Germany (FAX+49-7031-14-3143)
10
Vince Roland
Reliability & Regulatory
Engineeri ng Manager
S:\agilent\e8285\ALR\Book\chapters\front.fm
Table 1
United States of America:
Agilent Technologies
Test and Measurement Call
Center
P.O. Box 4026
Englewood, CO 80155-4026
(tel) 1 800 452 4844
Japan:
Agilent Technologies Japan Ltd.
Measurement Assistance Center
9-1 Takakura-Cho, Hachioji-Shi,
Tokyo 192-8510, Japan
(tel) (81) 456-56-7832
(fax) (81) 426-56-7840
Asia Pacific:
Agilent Technologies
19/F, Cityplaz a One,
111 Kings Road,
Taikoo shing, Hong Kong, SAR
Canada:
Agilent Technologies
Canada Inc.
5159 Spectrum Way
Mississauga, Ont ar io
L4W 5G1
(tel) 1 877 894 4414
Latin America:
Agilent Technologies
Latin America Region
Headquarters
5200 blue Lagoon Drive,
Suite #950
Miami, Florida 33126
U.S. A.
(tel) (305) 267 4245
(fax) (305) 267 4286
Europe:
Agilent Technologies
European Marketing
Organization
P.O. Box 999
1180 AZ Amstelveen
The Netherlands
(tel) (3120) 547 9999
Australia/New Zealand:
Agilent Technologies
Australia Pty Ltd
347 Burwood Highway
Forest Hill, Victoria 3131
(tel) 1 800 629 485 (Australia)
(fax) (61 3) 9272 0749
(tel) 0 800 738 378 (New
Zealand)
(fax) (64 4) 802 6881
(tel) (852) 2599 7899
(fax) (852) 2506 9233
11
Agilent Technologies E8285A Support
Contacts
The documentation supplied with your Test Set is an excellent source of
reference, application, and service information. Please use these
manuals if you are experiencing technical problems:
Table 2 Support Documentation
User’s Guide Quick Reference Guide
Application Guide Assembly Level Repair
Reference Guide CD-ROM
If you have used the manuals and still have application questions,
contact your local Agilent Technologies Sales Representative.
Repair assistance is available for the Agilent E8285A CDMA Mobile
Station Test Set from the factory by phone and e-mail. External and
internal Agilent users can contact the factory via email. Par ts
information is also available from Agilent.
When calling or writing for repair assistance, please have the following
information ready:
• Instrument model number (E8285A)
• Instrument Serial Number (tag located on the rear panel).
• Installed options - if any (tag located on the rear panel).
• Instrument firmware revision (displayed at the top of the screen
when the Test Set is powered up, and is also displayed on the
CONFIGURE screen).
Support Telephone Numbers:
1 800 827 3848 (RF Comms Service Assistance, U.S. only)
1 509 921 3848 (RF Comms Service Assistance, International)
1 800 227 8164 (Agilent Direct Parts Ordering, U.S. only)
1 800 403 0801 (Agilent Instrument Support Center, U.S. only)
1 916 783 0804 (Agilent Service Parts Identification, U.S. & Intl.)
12
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Table 3
Earth
Ground
Line Neutral
Power Cables
Plug type
Plug Descriptions
male/female
Straight/Straight
Straight/90
°
Agilent Part #
(cable & plug)
8120-1689
8120-1692
Cable Descriptions
79 inches, mint gray
79 inches, mint gray
Used in the following locations:
Bangladesh, Belgium, Benin, Bolivia, Boznia-Herzegovina, Bulgaria, Burkina Faso, Burma,
Burundi,Byelarus
Cameroon, Canary Islands, Central African Republic, Chad, Chile, Comoros, Congo, Croatia,
Czech Republic, Czechoslovakia
Denmark, Djibouti
East Germany, Egypt, Estonia, Ethiopia
Finland, France, French Guiana, French Indian Ocean Areas
Gabon, Gaza Strip, Geor gia, Germany, Gozo, Greece
Hungary
Iceland, Indonesia, Iran, Iraq, Israel, Italy, Ivory Coast
Jordan
Kazakhstan, Korea, Kyrgystan
Latvia, Lebanon, Libya, Lithuania, Luxembourg
Macedonia, Madeira Islands, Malagasy Republic, Mali, Malta, Mauritania, Miquelon, Moldova,
Mongolia, Morocco, Mozambique
Nepal, Netherlands, Netherlands Antilles, Niger, Norway
Oman
Pakistan, Paraguay, Poland, Portugal
Rep. South Africa, Romania, Russia, Rwanda
Saudi Arabia (220V), Senegal, Slovak Republic, Slovenia, Somalia, Spain, Spanish Africa, Sri
Lanka, St. Pierce Islands
13
Plug type
Earth
Ground
Line Line
Earth
Ground
Line Neutral
Plug Descriptions
male/female
Agilent Part #
(cable & plug)
Sweden, Syria
Tajikistan, Thailand, Togo, Tunisa, Turkey, Turkmenistan
USSR, Ukraine, Uzbekistan
W estern Africa, Western Sahara
Yugoslavia
Zaire
Table 4
Cable Descriptions
Plug Type
Plug Descriptions
male/female
Straight/Straight
Straight/90°
Used in the following locations:
Peru
Table 5
Plug Type
Plug Descriptions
male/female
Straight/Straight
Straight/90°
Agilent Part #
(cable & plug)
Cable Descriptions
8120-0698 90 inches, black
Agilent Part #
(cable & plug)
8120-2104
8120-2296
Cable Descriptions
79 inches, gray
79 inches, gray
Used in the following locations:
Switzerland
14
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Table 6
125V
Earth
Ground
LineNeutral
Plug Type
Plug Descriptions
male/female
Straight/Straight
Straight/90°
Straight/Straight
Agilent Part #
(cable & plug)
8120-1378
8120-1521
8120-1751
Used in the following locations:
American Samoa
Bahamas, Barbados, Belize, Bermuda, Brazil
Caicos, Cambodia, Canada, Cayman Islands, Columbia, Costa Rica, Cuba
Dominican Republic
Ecuador, El Salvador
French West Indies
Guam, Guatemala, Guyana
Cable Descriptions
90 inches, jade gray
90 inches, jade gray
90 inches, jade gray
Haiti, Honduras
Jamaica
Korea
Laos, Leeward and Windward Islands, Liberia
Mexico, Midway Islands
Nicaragua
Other Pacific Islands
Panama, Philippines, Puerto Rico
Saudi Arabia (115V, 127V), Suriname
Taiwan, Tobago, Trinidad, Trust Territories of Pacific Islands
Turks Island
United States
Venezuela, Vietnam, Virgin Islands of the U.S.
Wa ke Island
15
Table 7
JIS C 8303, 100 V
Earth
Ground
LineNeutral
Earth
Ground
Line
Neutral
Plug Type
Plug Descriptions
male/female
Straight/Straight
Straight/90°
Used in the following locations:
Japan
Table 8
Plug Type
Plug Descriptions
male/female
90°/Straight
90°/90°
Straight/Straight
Agilent Part #
(cable & plug)
8120-4753
8120-4754
Agilent Part #
(cable & plug)
8120-2956
8120-2957
8120-3997
Cable Descriptions
90 inches, dark gray
90 inches, dark gray
Cable Descriptions
79 inches, gray
79 inches, gray
79 inches, gray
Used in the following locations:
Denmark
Greenland
16
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Table 9
Earth
Ground
Line
Neutral
Line
Neutral
Earth
Ground
Plug Type
Plug Descriptions
male/female
Straight/Straight
Straight/90°
Used in the following locations:
Botswana
India
Lesotho
Malawi
South-West Africa (Namibia), Switzerland
Zambia, Zimbabwe
Table 10
Agilent Part #
(cable & plug)
8120-4211
8120-4600
Cable Description
79 inches, mint gray
79 inches, mint gray
Plug Type
Plug Descriptions
male/female
Straight/Straight
Straight/Straight
Straight/90°
Straight/90°
Used in the following locations:
System Cabinets
Agilent Part #
(cable & plug)
8120-1860
8120-1575
8120-2191
8120-4379
Cable Descriptions
60 inches, jade gray
30 inches, jade gray
60 inches, jade gray
15.5 inches, jade gray
17
Table 11
Earth
Ground
Line
Neutral
Plug Type (Male)
Plug Descriptions
male/female
90°/Straight
90°/90°
Used in the following locations:
Bahrain, British Indian Ocean Terr., Brunei
Canton, Cyprus
Enderbury Island, Equatorial Guinea
Falkland Islands, French Pacific Islands
Gambia, Ghana, Gibraltar, Guinea
Hong Kong
Ireland
Kenya, Kuwait
Agilent Part #
(cable and plug)
8120-1351
8120-1703
Cable Descriptions
90 inches, mint gray
90 inches, mint gray
Macao, Malaysia, Mauritius
Nigeria
Qatar
Seychelles, Sierra Leone, Singapore, Southern Asia, Southern Pacific Islands, St. Helena, Sudan
Tanzania
Uganda, United Arab Emirates, United Kingdom
Yeman (Aden & Sana)
18
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Table 12
Line
Neutral
Earth
Ground
Plug Type
Plug Descriptions
male/female
Straight/Straight
Straight/90°
Used in the following locations:
Argentina, Australia
China (People’s Republic)
New Zealand
Papua New Guinea
Urugray
We stern S amoa
Agilent Part #
(cable & plug)
8120-1369
8120-0696
Cable Descriptions
79 inches, gray
80 inches, gray
19
ATTENTION
Static Sensitive
Devices
This instrument was constructed in an ESD (electro-static discharge) protected environment. This is
because most of the semi conductor devices used in this instrument are susceptible to damage by
static discharge.
Depending on the magnitude of the charge, device substrates can be punctured or destroyed by
contact or mer e pr oxim ity of a stat ic char ge. Th e r esult can cause degra dation of d evice performance,
early failure, or immediate destruction.
These charges are generated in numerous ways such as simple contact, separation of materials, and
normal motions of persons working with static sen sitive devices.
When handling or s ervicin g equi pment co ntaini ng st atic sensit ive devi ces, ad equate p r eca ution s mus t
be taken to prevent device damage or destruction.
Only those who are thoroughly familiar with industry accepted techniques for handling static
sensitive devices should attempt to service circuitry with these devices.
In all instances, measures must be taken to prevent static charge build-up on work surfaces and
persons handling the devices.
20
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Contents
1. Introduction
Test Set Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Troubleshooting Strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Repair Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Calibration and Performance Verification . . . . . . . . . . . . . . . . . . . . . . 38
System Power Calibration Program . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Test Equipment Needed for the System Power Calibration Program 40
E8285A Support Contacts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Hardware and Firmware Enhancements . . . . . . . . . . . . . . . . . . . . . . 42
Ordering New Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2. Troubleshooting
How to Troubleshoot the Test Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Self-Test Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Functional Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
AF, RF, and CDMA Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Frequently Encountered Diagnostic Messages . . . . . . . . . . . . . . . . . . 68
Manual Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Service Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
3. Disassembly and Replaceable Parts
Before You Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Disassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
4. Functional Verification
5. Periodic Adjustments/Calibration
Periodic Adjustments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Storing Calibration Factors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Running the Periodic IQ, or IQ Demod Path Calibration Programs. 130
Periodic Calibration Menu Descriptions. . . . . . . . . . . . . . . . . . . . . . . 131
Setting the Timebase Latches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
IQ Calibration Program Description . . . . . . . . . . . . . . . . . . . . . . . . . 137
IQ Demod Path Calibration Program Description. . . . . . . . . . . . . . . 139
6. Performance Tests
Procedure and Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
RF Generator FM Distortion
Performance Test 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
RF Generator FM Accuracy
Performance Test 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
RF Generator FM Flatness
Performance Test 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
RF Generator Residual FM
Performance Test 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
RF Generator Level Accuracy
21
Contents
Performance Test 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
RF Generator Harmonics Spectral Purity
Performance Test 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
RF Generator Spurious Spectral Purity
Performance Test 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
AF Generator AC Level Accuracy
Performance Test 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
AF Generator DC Level Accuracy
Performance Test 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
AF Generator Residual Distortion
Performance Test 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
AF Generator Frequency Accuracy
Performance Test 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
AF Analyzer AC Level Accuracy
Performance Test 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
AF Analyzer Residual Noise
Performance Test 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
AF Analyzer Distortion and SINAD Accuracy
Performance Test 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
AF Analyzer DC Level Accuracy
Performance Test 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
AF Analyzer Frequency Accuracy to 100 kHz
Performance Test 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
AF Analyzer Frequency Accuracy at 400 kHz
Performance Test 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Oscilloscope Amplitude Accuracy
Performance Test 18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
RF Analyzer Level Accuracy
Performance Test 19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
RF Analyzer FM Accuracy
Performance Test 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
RF Analyzer FM Distortion
Performance Test 21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
RF Analyzer FM Bandwidth
Performance Test 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
RF Analyzer Residual FM
Performance Test 23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Spectrum Analyzer Image Rejection
Performance Test 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
CDMA Generator RF IN/OUT Amplitude Level Accuracy
Performance Test 25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
CDMA Generator DUPLEX OUT Amplitude Level Accuracy
Performance Test 26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
CDMA Generator Modulation Accuracy
Performance Test 27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
CDMA Analyzer Average Power Level Accuracy
Performance Test 28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
CDMA Analyzer Channel Power Level Accuracy
Performance Test 29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
22
Contents
7. Performance Test Records
RF Generator FM Distortion
Performance Test 1 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
RF Generator FM Accuracy
Performance Test 2 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
RF Generator FM Flatness
Performance Test 3 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
RF Generator Residual FM
Performance Test 4 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
RF Generator Level Accuracy
Performance Test 5 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
RF Generator Harmonics Spectral Purity
Performance Test 6 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
RF Generator Spurious Spectral Purity
Performance Test 7 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
AF Generator AC Level Accuracy
Performance Test 8 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
AF Generator DC Level Accuracy
Performance Test 9 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
AF Generator Residual Distortion
Performance Test 10 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
AF Generator Frequency Accuracy
Performance Test 11 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
AF Analyzer AC Level Accuracy
Performance Test 12 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
AF Analyzer Residual Noise
Performance Test 13 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
AF Analyzer Distortion and SINAD Accuracy
Performance Test 14 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
AF Analyzer DC Level Accuracy
Performance Test 15 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
AF Analyzer Frequency Accuracy to 100 kHz
Performance Test 16 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
AF Analyzer Frequency Accuracy at 400 kHz
Performance Test 17 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Oscilloscope Amplitude Accuracy
Performance Test 18 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
RF Analyzer Level Accuracy
Performance Test 19 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
RF Analyzer FM Accuracy
Performance Test 20 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
RF Analyzer FM Distortion
Performance Test 21 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
RF Analyzer FM Bandwidth
Performance Test 22 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
RF Analyzer Residual FM
Performance Test 23 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Spectrum Analyzer Image Rejection
Performance Test 24 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
23
Contents
CDMA Generator RF IN/OUT Amplitude Level Accuracy
Performance Test 25 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
CDMA Generator DUPLEX OUT Amplitude Level Accuracy
Performance Test 26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
CDMA Generator Modulation Accuracy
Performance Test 27 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
CDMA Analyzer Average Power Level Accuracy
Performance Test 28 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
CDMA Analyzer Channel Power Level Accuracy
Performance Test 29 Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
8. Block Diagrams
Signal Flow and Interconnections . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
RF Input/Output Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
RF Analyzer Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Spectrum Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Audio Analyzer Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
CDMA Analyzer Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
CDMA Generator Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Audio Generator Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
RF Generator Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279
Reference/Regulator Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284
Instrument Control Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
GPIB Serial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
9. Service Screen
Troubleshooting with the SERVICE Screen . . . . . . . . . . . . . . . . . . . 294
24
1 Introduction
This manual explains how to repair and calibrate the Agilent
Technologies E8285A CDMA/PCS Mobile Station Test Set; called the
“Test Set” throughout this manual.
Throughout this manual you will see this note:
NOTE Test Sets with firmware revision A.04.5X and above operate only at RF
frequencies from 800 to 1000 MHz and 1700 to 2000 MHz. A text only error
message
frequencies are set.
The purpose of this note is to bring attention to RF frequency band
coverage provided by firmware revisi on A.04.5X and above. Test Sets
with firmware revision A.02.XX and below can operate at RF
frequencies from 100 (usable to 30 MHz) to 1000 and 1700 to 2000 MHz.
“Input value out of range”, will be displayed if invalid
25
Introduction
Test Set Description
Test Set Description
Several analog and digital test instruments are integrated into the
E8285A CDMA Mobile Station Test Set to test Code Division Multiple
Access (CDMA) digital cellular, PCS, and s everal types of analog mobile
phones, such as AMPS, NAMPS, and TACS.
Figure 1-1 The E8285A CDMA Mobile Station Test Set
N
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Some of the instrument functions in the Test Set include:
• Synthesized AM, FM, and IQ modulation signal generator
• AM, FM and IQ modulation analyzer
• Duplex offset signal generator
• SSB demodulator
• RF power meter
• Audio and RF frequency counter and RF frequency error meter
• AC and DC voltmeter
• Distortion, SINAD, and signal-to-noise-ratio meters
• Two variable audio sources
• Oscilloscope
• Spectrum analyzer and tracking generator (optional)
• Signaling encoder and decoder
• DC current meter
26 S:\agilent\e8285\ALR\Book\chapters\intro.fm
Introduction
Test Set Description
Some of these functions are dire ctly replaceable as semblies (such as the
spectrum analyzer); some functions are digitally derived from other
assemblies (such as the oscilloscope). Most of the replaceable
assemblies are plug-in components.
Most instrument functions can be cont rolled by front-panel (local)
controls and by remote commands ( using a c onnected controll er). Power
on/off, volume, and squelch controls cannot be accessed remotely.
Controls are grouped together on display screens that are usually
associated with a specific task (suc h as making a call to a CDMA mobile
phone).
An Instrument BASIC (IB ASIC) control ler is also built into the T es t Set
to allow automated operation without using an external controller. This
computer also has the ability to be a system controller to other tes t
system instruments. Refer to the Test Set’s user’s guide for information
on using the IBASIC computer (also referred to as the IBASIC
controller).
27
Introduction
Product Description
Product Description
The E8285A CDMA Mobile Test Set is designed to meet the needs of
Cellular Provider Point of Sale Retailers, manufacturing customers,
and other customers who require CDMA Mobile Phone test capability.
The Tes t Set is very similar to it’s predecessor, the Agilent Technologies
8924C with the addition of newly designed RF I/O module, upconverter
and downconverter assemblies. These assemblies extend the Test Set
frequency range to cover the 1800- 1900 MHz PCS Cellular band as well
as providing standard 800 MHz cellular band coverage.
Internal Ope rating System
A Motorola® 68020 − 33 MHz microprocessor acts as the ho st pro cesso r
of the Test Set. It receives commands from the front-panel co ntrols and
communicates directly with almost every assembly inside the Test Set.
The host is also in constant communication with several other
microprocessors located throughout the Test Set.
Communications to the GPIB , s erial, a nd paralle l ports are t hrough the
control int e rface assembly to th e ho st processor.
This processor is also the core for the internal IBASIC computer. The
IBASIC computer is used t o load and run var ious sof tw are pac kages f or
automated radio tests. It is also responsible for executing the internal
diagnostic routines used to troubleshoot a failing inst rument.
Instrument Frequency References
The Test Set reference ti mebase path co n s i st s o f tw o assemblies, an
ovenized high stability reference assembly and a CDMA reference
assembly. These two assemblies provide all frequency, phase, and
timing signals used to accurately synthesize all of the Test Set’s source
and analysis signals. A master reference signal can originate from
either an external source at the 10 MHz input on the rear panel, or
from the internal 10 MHz phase locked loop oscillator located on the
high stability reference asse mbly. The high stability refere nce assembly
provides timebase references for the analog assemblies and a 10 MHz
reference signal to the CDMA reference assembly. The CDMA reference
assembly uses this signal to generate clock and timing signals for
internal CDMA assemblies, provide the 10 MHz output signal to the
rear panel, and generate the AWGN (Additive White Gaussian Noise) I
& Q noise source signals.
28 S:\agilent\e8285\ALR\Book\chapters\intro.fm
Figure 1-2 Reference Signal Generation
Introduction
Product Description
Rear Panel External
Reference In
1, 2, 5, 10 MHz
Rear Panel External
Reference Out
10 MHz
OC XO H igh Stability
Reference Assembly
10 MHz In
CDMA Reference
Assembly
AWGN
To internal analo g assemblies.
See block diagrams for mor e
information.
To internal digital assemblies.
See block diagrams for more
information.
To I/Q Modulator Assembly
29
Introduction
Product Description
RF Analysis
RF signals connected to the front panel RF IN/OUT connector or
ANTENNA IN connector go to the RF I/O module. The signal level and
RF frequency are measured, and the level is adjusted using fixed step
and variable attenuators in the separate downconverter module.
CAUTION Over-Power Damage
The ANTENNA IN connector is only used for very low level signals
(60 mW or less), and cannot be used for Transmitter (TX) Power
measurements. Exceeding this limit may destroy the RF I/O module.
The RF IN/OUT connector is used to m easure direc t mobile transm itter
power up to 2.5 Watts continuous.
The downconverter mixes the input signal with a local oscillator signal
from the Receiver Synthesizer ass embly to produc e a 114.3 MHz, 6 14.3,
or 385.7 MHz IF signal (depending on the frequency of the received
signal). The signal goes through a bandpass filter and then on to the
Receiver assembly.
If the IF is 614.3 or 385.7 MHz, the Receiver assembly mixes the signal
with a 500 MHz local oscillator (LO) signal from the Reference
assembly to obtain the 114.3 MHz IF. If the IF is 114.3 MHz, the signal
bypasses this downconversion. The 114.3 MHz si gnal divides into two
paths.
Figure 1-3 Received Signal Downconversion
Downconverter
1200-1700 MHz from
Receiver Synthesizer
Assembly
385.7 MHz
RF I/O
RF IN/OUT
114.3 MHz
614.3 MHz
ANTENNA
IN
Power
Detector
486-1026 MHz from
Receiver Synthesizer
Assembly
Receiver Assembly
114.3 MHz
500 MHz from
Reference Assy
To LO/IF Demod Assembly
114.3 MHz
AM, FM, SSB
Demodulation
30 S:\agilent\e8285\ALR\Book\chapters\intro.fm
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