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N5242A
Agilent Technologies N5242A User Manual
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Service Guide
N5242A
Agilent T
echnologies
2-Po
rt an
d 4
-Port
PNA
Microw
ave Netw
ork Analyze
rs
(10 MHz–26.5 GHz)
Part Nu
mber
N5242-
90001
Printed in USA
Novem
ber 2007
Supersede
s Print Date: March 2007
©
Agilent Tec
hnologies, Inc. 2007
2
Table of Contents
Default Chapter
3
Service Guide N5242-90001
3
Table of Contents
5
1 Safety and Regulatory Information
11
Information in this Chapter
12
Chapter One At-A-Glance
12
Safety Symbols
13
General Safety Considerations
13
Safety Earth Ground
13
Before Applying Power
13
Servicing
14
Electrostatic Discharge Protection
16
Regulatory Information
17
Instrument Markings
17
Lithium Battery Disposal
18
2 General Product Information
19
Information in this Chapter
20
Chapter Two At-A-Glance
20
Maintenance
21
Physical Maintenance
21
Electrical Maintenance
21
Analyzer Options Available
21
Options as Upgrades
21
Option H08, Pulsed RF Measurement Capability
21
Option 010, Time Domain Operation
21
Option 020, Add if Inputs for Antenna and Millimeter-Wave
22
Option 021, Add Pulse Modulator to 1St Internal Source
22
Option 022, Add Pulse Modulator to 2Nd Internal Source
22
Option 025, Add Four Internal Pulse Generators
22
Option 029, Noise Figure Measurement Capability
22
Option 080, Frequency Offset Measurements
22
Option 082, Scalar Calibrated Converter Measurements
23
Option 083, Vector and Scalar Calibrated Frequency Converter Measurements
23
Option 1CM, Rack Mount Kit for Instruments Without Handles
23
Option 200, Standard 2-Port Configuration
23
Option 219, 2-Port with Extended Power Range and Bias Tees
23
Option 224, 2-Port with 2Nd Source, Combiner, and Source Switches
23
Option 400, Standard 4-Port Configuration
24
Option 419, 4-Port with Extended Power Range and Bias Tees
24
Option 423, 4-Port with Combiner, and Source Switches
24
Option 551, N-Port Calibrated Measurements
24
Option 897, Built-In Tests for Commercial Calibration
24
Option 898 Built-In Tests for Standards Compliant Calibration
24
Calibration Options
25
Analyzer Upgrades Available
26
Analyzer Accessories Available
27
CD-RW Drive-N4688A
27
USB Hub-N4689A
27
Pulse I/O Adapter-N1966A
27
Required Service Test Equipment
28
Agilent Support, Services, and Assistance
31
Service and Support Options
31
Contacting Agilent
31
Shipping Your Analyzer to Agilent for Service or Repair
31
3 Tests and Adjustments
33
Information in this Chapter
34
Conventions Used for Hardkeys, Softkeys, and Menu Items
34
Chapter Three At-A-Glance
34
Before You Begin
36
Verify the Operating Environment
36
Protect against Electrostatic Discharge (ESD)
36
Allow the Analyzer to Warm up
36
Review the Principles of Connector Care
37
About System Verification and Performance Tests
38
System Specifications
38
Instrument Specifications
38
System Verification Procedure
39
Performance Tests
39
Certificate of Calibration
39
ANSI/NCSL Z540-1-1994 Verification
40
Non-ANSI/NCSL Z540-1-1994 Verification
41
Preliminary Checks
42
The Operator's Check
42
The Test Port Cable Checks
44
System Verification
51
What the System Verification Verifies
51
Measurement Uncertainty
52
Measurement Traceability
53
Performing System Verification
54
Performance Tests
60
Source Power Accuracy Test
60
Source Maximum Power Output Test
61
Source Power Linearity Test
61
Frequency Accuracy Test
62
Trace Noise Test
62
Receiver Compression Test
63
Noise Floor Test
64
Calibration Coefficients Test
65
Dynamic Accuracy Test
66
Adjustments
67
10 Mhz Frequency Reference Adjustment
68
IF Gain Adjustment
69
Synthesizer Bandwidth Adjustment
69
Source Adjustment
70
Receiver Adjustment
71
Receiver Characterization
74
EE Default Adjustment
74
4 Troubleshooting
75
Information in this Chapter
76
Chapter Four At-A-Glance
76
Conventions Used for Hardkeys, Softkeys, and Menu Items
77
Operating the Analyzer with Covers Removed
77
Protect against Electrostatic Discharge (ESD)
77
Assembly Replacement Sequence
77
Getting Started with Troubleshooting
78
Check the Basics
78
Troubleshooting Organization
79
Power up Troubleshooting
80
Power Supply Check
81
Troubleshooting LCD Display Problems
86
Front Panel Troubleshooting
87
Front Panel Keypad and RPG Test
87
A3 Display Test
89
Checking the A2 USB Board
90
A1 Front Panel Interface Board
90
Rear Panel Troubleshooting
91
Checking the USB Ports
91
Checking the CONTROLLER Port
91
LAN Troubleshooting
92
Measurement System Troubleshooting
97
Before You Begin-Consider: Where Do You See a Problem
97
Verifying the A, B, C, D, and R Traces (Standard S-Parameter Mode)
99
Where to Begin Troubleshooting
101
Checking the Source Group
103
Checking the Signal Separation Group
107
Checking the Receiver Group
111
Instrument Block Diagrams Sheet 1
115
Microwave PNA, N5242A
115
Instrument Block Diagrams Sheet 2
117
Microwave PNA, N5242A
117
5 Theory of Operation
119
Information in this Chapter
120
Chapter Five At-A-Glance
120
Network Analyzer System Operation
121
Functional Groups of the Network Analyzer
122
Synthesized Source Group Operation
125
Basic Operation
125
A4, A13, and A11 13.5 Ghz Synthesizer Boards
128
A5 and A8 26.5 Ghz Source Boards
128
A21 Multiplier/Amplifier 26.5 Board (HMA26.5)
129
A10 Frequency Reference Board
129
A19 Test Set Motherboard
130
Signal Separation Group Operation
134
Configurable Test Set
134
A25-A28 Bridges
135
A29-A32 Test Port Couplers
135
A34-A37 65-Db Source Step Attenuators and A38-A41 Bias Tees (Optional)
138
A46-A49 Source Bypass Switches and A50 Combiner (Optional)
138
Receiver Group Operation
139
A42-A45 35-Db Receiver Step Attenuators (Optional)
139
A33 Reference Mixer Switch
139
A23 and A24 Mixer Bricks
139
A20 if Multiplexer Board
140
A12 SPAM Board (Analog Description)
142
Noise Measurement Group Operation (Option 029)
145
A52 and A53 Test Port 1 and 2 Option 029 Switches
145
A54 Test Port 2 Option 029 Bridge
145
A55 Noise Downconverter
145
A7 Noise Receiver Board
145
Digital Processing and Digital Control Group Operation
147
Front Panel Subgroup
149
Data Acquisition and Processing Subgroup
150
Power Supply Group Operation
152
6 Replaceable Parts
153
Information in this Chapter
154
Chapter Six At-A-Glance
154
Ordering Information
155
Assembly Replacement Sequence
155
Rebuilt-Exchange Assemblies
156
Replaceable Parts Listings
157
Front Panel Assembly, Front Side, All Options
162
Front Panel Assembly, Back Side, All Options
164
Top Assemblies, All Options
166
Top Cables, All Cables-All Options
168
Bottom Assemblies, Standard 2-Port Configuration, Option 200
170
Bottom RF Cables, Standard 2-Port Configuration, Option 200
172
Bottom Ribbon Cables and Wire Harnesses, Standard 2-Port Configuration, Option
174
Bottom Assemblies, 2-Port, Option 219 (Including Option 029)
176
Bottom RF Cables, 2-Port, Option 219 Without Option 029
178
Bottom RF Cables, 2-Port, Option 219 with Option 029
180
Bottom Ribbon Cables and Wire Harnesses, 2-Port, Option 219 (Including Option 029)
182
Bottom Assemblies, 2-Port, Option 224 (Including Option 029)
184
Bottom RF Cables, 2-Port, Option 224 Without Option 029
186
Bottom RF Cables, 2-Port, Option 224 with Option 029
188
Bottom Ribbon Cables and Wire Harnesses, 2-Port, Option 224 (Including Option 029)
190
Bottom Assemblies, Standard 4-Port Configuration, Option 400
192
Bottom RF Cables, Standard 4-Port Configuration, Option 400
194
Bottom Ribbon Cables and Wire Harnesses, Standard 4-Port Configuration, Option
196
Bottom Assemblies, 4-Port, Option 419 (Including Option 029)
198
Bottom RF Cables, 4-Port, Option 419 Without Option 029 (Ports 1 and 2)
200
Bottom RF Cables, 4-Port, Option 419 with Option 029 (Ports 1 and 2)
202
Bottom RF Cables, 4-Port, Option 419 Without Option 029 (Ports 3 and 4)
204
Bottom RF Cables, 4-Port, Option 419 with Option 029 (Ports 3 and 4)
206
Bottom Ribbon Cables and Wire Harnesses, 4-Port, Option 419 (Including Option 029)
208
Bottom Assemblies, 4-Port, Option 423 (Including Option 029)
210
Bottom RF Cables, 4-Port, Option 423 Without Option 029 (Ports 1 and 2)
212
Bottom RF Cables, 4-Port, Option 423 with Option 029 (Ports 1 and 2)
214
Bottom RF Cables, 4-Port, Option 423 Without Option 029 (Ports 3 and 4)
216
Bottom RF Cables, 4-Port, Option 423 with Option 029 (Ports 3 and 4)
218
Bottom Ribbon Cables and Wire Harnesses, 4-Port, Option 423 (Including Option 029)
220
Top Hardware and Miscellaneous Parts, All Options
222
Bottom Hardware and Miscellaneous Parts, All Options Except 029
224
Bottom Hardware and Miscellaneous Parts, Option 029
226
Internal Hardware and Miscellaneous Parts, All Options
228
External Hardware and Miscellaneous Parts, All Options
230
Rear Panel Assembly, All Options
232
Miscellaneous Part Numbers
234
7 Repair and Replacement Procedures
237
Information in this Chapter
238
Chapter Seven At-A-Glance
238
Personal Safety Warnings
239
Electrostatic Discharge (ESD) Protection
239
Removal and Replacement Procedures
240
Removing the Covers
242
Removing and Replacing the Front Panel Assembly
244
Removing and Replacing the A1-A3 and Other Front Panel Subassemblies
246
Removing and Replacing the A4-A13 Boards
250
Removing and Replacing the A14 System Motherboard
252
Removing and Replacing the A15 Midplane Board
254
Removing and Replacing the A16 Power Supply Assembly
256
Removing and Replacing the A17 CPU Board Assembly
258
Removing and Replacing the A18 GPIB Board
260
Removing and Replacing the A19 Test Set Motherboard
262
Removing and Replacing the A20 if Multiplexer Board
264
Removing and Replacing the A21 HMA26.5
266
Removing and Replacing the A22 Splitter
268
Removing and Replacing the A23 and A24 Mixer Bricks
270
Removing and Replacing the A25-A28 Bridges and Bridge Mounting Brackets
272
Removing and Replacing the A29-A32 Test Port Couplers
274
Removing and Replacing the A33 Reference Mixer Switch
276
Removing and Replacing the A34-A37 Source Attenuators, the A38-A41 Bias Tees, and the A42-A45 Receiver Attenuators
278
Removing and Replacing the A38-A41 Bias Tees
280
Removing and Replacing the A46-A49 Bypass Switches and the A50 Combiner
282
Removing and Replacing the A51 Hard Disk Drive (HDD)
284
Removing and Replacing the A52 and A53 Option 029 Test Port Switches
288
Removing and Replacing the A54 Option 029 Test Port 2 Bridge and the A55 Option 029 Noise Downconverter
290
Removing and Replacing the Rear Panel
292
Removing and Replacing the Front Panel LED Boards
294
Removing and Replacing the Fans
296
Removing and Replacing the Lithium Battery
298
Post-Repair Procedures
300
8 General Purpose Maintenance Procedures
303
Information in this Chapter
304
Chapter Eight At-A-Glance
304
Conventions Used for Hardkeys, Softkeys, and Menu Items
304
Error Terms
305
Using Error Terms as a Diagnostic Tool
305
Performing Measurement Calibration
306
Using Flowgraphs to Identify Error Terms
306
Accessing Error Terms
310
Error Term Data
312
Option Enable Utility
315
Accessing the Option Enable Utility
315
Option Entitlement Certificate
315
Enabling or Removing Options
316
Repairing and Recovering Option Data
317
Installing or Changing a Serial Number
318
Firmware Upgrades
319
How to Check the Current Firmware Version
319
Downloading from the Internet
319
Operating System Recovery
320
Recovering from Hard Disk Drive Problems
320
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Agilent Technologies N5242A Specifications
General
Brand
Agilent Technologies
Model
N5242A
Category
Measuring Instruments
Language
English
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