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8156A
Agilent Technologies 8156A User Manual
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3
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Making an At
tenuation
Sweep
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Table of Contents
Default Chapter
12
Table of Contents
12
1 Getting Started
29
Using the Attenuator
30
Using the Modify Keys
30
Figure 1-1 the Attenuator Keys
30
Making an Attenuation Sweep
31
Making an Automatic Sweep
31
Figure 1-2 the Modify Keys
31
The Manual Sweep
32
Figure 1-3 the Parameters for an Automatic Sweep
32
Using Your Attenuator as a Variable Back Reflector
33
Figure 1-4 the Hardware Configuration for the Back Reflector (Options 201 and 203)
33
Using the Through-Power Mode
34
Selecting the Wavelength Calibration and Its Function
34
2 Using the Attenuator
36
Setting up the Hardware
38
Figure 2-1 the Hardware Configuration for the Attenuator
38
Setting up the Attenuation
39
Entering the Attenuation Factor
39
Figure 2-2 the Attenuation Factor on the Display
39
Entering a Calibration Factor
40
Figure 2-3 the Calibration Factor on the Display
40
Entering the Wavelength
41
Figure 2-4 the Wavelength on the Display
42
Example, Setting the Calibration
43
Figure 2-5 Hardware Configuration for Attenuation Example - a
43
Figure 2-6 Hardware Configuration for Attenuation Example - B
44
3 Making an Attenuation Sweep
46
Configuring the Hardware
48
Figure 3-1 the Hardware Configuration for the Attenuator
48
The Automatic Sweep
49
Setting up an Automatic Sweep
49
Figure 3-2 the Parameters for an Automatic Sweep
50
Figure 3-3 Selecting the Automatic Sweep Application
50
Executing the Automatic Sweep
51
The Manual Sweep
52
Setting up a Manual Sweep
52
Figure 3-4 Running the Automatic Sweep
52
Figure 3-5 Editing the STOP Parameter
53
Executing the Manual Sweep
54
Figure 3-6 Running the Manual Sweep
54
Example, an Automatic Attenuation Sweep
55
4 Using Your Attenuator as a Variable Back Reflector
59
Configuring the Hardware
60
Figure 4-1 the Hardware Configuration for the Back Reflector
60
Setting up the Software
61
Editing the Setup
61
Executing the Back Reflector Application
62
Figure 4-2 Editing the Value for the Reference Return Loss
62
Example, Setting a Return Loss
63
Figure 4-3 Executing the Back Reflector Application
63
Figure 4-4 Hardware Configuration for Variable Return Loss
64
5 Setting up the System
67
Setting the GPIB Address
68
Resetting the GPIB Address
68
Selecting the Wavelength Calibration and Its Function
68
Setting the Function of the Wavelength Calibration
69
Figure 5-1 the LAMBDCAL Indicator on the Display
69
Selecting the Wavelength Calibration Data
70
Figure 5-2 the USERCAL Indicator on the Display
70
Selecting the Through-Power Mode
71
Figure 5-3 the Display in Through-Power Mode
71
Deselecting the Through-Power Mode
72
Resetting the Through-Power Mode
72
Setting the Display Brightness
72
Resetting the Display Brightness
72
Selecting the Setting Used at Power-On
73
Resetting the Power-On Setting
73
Locking out ENB /DIS
73
Resetting the ENB /DIS Lock out
74
Selecting the Shutter State at Power on
74
Resetting the Shutter State at Power on
74
Setting the Display Resolution
75
Resetting the Display Resolution
75
6 Storing and Recalling Settings
77
Storing the Setting
78
Recalling a Setting
78
Resetting the Instrument
78
Recalling a User Setting
78
Figure 6-1 the Display When Recalling the Default Setting
78
7 Programming the Attenuator
81
GPIB Interface
82
Table 7-1 GPIB Capabilities
83
Setting the GPIB Address
84
Returning the Instrument to Local Control
84
How the Attenuator Receives and Transmits Messages
84
How the Input Queue Works
84
The Output Queue
85
The Error Queue
85
Some Notes about Programming and Syntax Diagram Conventions
86
Short Form and Long Form
86
Command and Query Syntax
87
8 Remote Commands
89
Units
90
Command Summary
90
Table 8-1 Units and Allowed Mnemonics
90
Table 8-2 Common Command Summary
90
Table 8-3 Command List
91
The Common Commands
94
Common Status Information
94
Figure 8-1 Common Status Registers
95
Cls
96
Ese
96
Esr
97
Table 8-4 the Event Status Enable Register
97
Idn
98
Table 8-5 the Standard Event Status Register
98
Opc
99
Opt
99
Rcl
100
Rst
100
Sav
101
Table 8-6 Reset State (Default Setting)
101
Sre
102
Table 8-7 the Service Request Enable Register
102
Stb
103
Table 8-8 the Status Byte Register
103
Tst
104
Table 8-9 the Self Test Results
104
Wai
105
Display Commands
105
Display:brightness
105
Display:enable
106
Input Commands
107
Input:attenuation
107
Input:lcmode
108
Input:offset
108
Input:offset:display
109
Input:wavelength
110
Output Commands
111
Output:apmode
111
Output:power
113
Output:[:State]
114
Output:[:State]:Apoweron
115
Status Commands
115
Status:operation:condition
117
Figure 8-2 the Status Registers
117
Status:operation:enable
118
Status:operation[:Event]
118
Status:operation:ntransition
119
Status:operation:ptransition
119
Status:questionable:condition
120
Status:questionable:enable
120
Status:questionable[:Event]
121
Status:questionable:ntransition
121
Status:questionable:ptransition
122
Status:preset
123
System Commands
123
System:error
123
User Calibration Commands
124
Entering the User Calibration Data
124
9 Programming Examples
131
Example 1 - Checking Communication
132
Example 2 - Status Registers and Queues
133
Example 3 - Measuring and Including the Insertion Loss
136
Figure 9-1 Hardware Configuration for Attenuation Example - a
136
Figure 9-2 Hardware Configuration for Attenuation Example - B
137
Example 4 - Running an Attenuation Sweep
140
A Installation
142
Safety Considerations
144
Initial Inspection
144
AC Line Power Supply Requirements
145
Line Power Cable
145
Figure A-1 Line Power Cables - Plug Identification
145
Figure A-2 Rear Panel Markings
146
Replacing the Battery
147
Replacing the Fuse
147
Figure A-3 Releasing the Fuse Holder
148
Figure A-4 the Fuse Holder
148
Operating and Storage Environment
149
Temperature
149
Humidity
149
Instrument Positioning and Cooling
149
Table A-1 Temperature
149
Monitor Output
150
Figure A-5 Correct Positioning of the Attenuator
150
Switching on the Attenuator
150
Optical Output
151
Disabling the Optical Output
151
GPIB Interface
151
Connector
152
Figure A-6 GPIB Connector
152
GPIB Logic Levels
153
Claims and Repackaging
153
Return Shipments to Agilent Technologies
153
B Accessories
156
Instrument and Options
158
GPIB Cables and Adapters
158
Connector Interfaces and Other Accessories
159
Straight Contact Connector
159
Figure B-1 Straight Contact Connector Configuration
160
Option 201, Angled Contact Connector
161
Figure B-2 Angled Contact Connector Configuration
161
C Specifications
164
Definition of Terms
166
Specifications
168
Table C-1 Specifications - Options 100, 101 and 201
168
Table C-2 Monitor Output Options
169
Supplementary Performance Characteristics
170
Table C-3 Multimode Options
170
Other Specifications
172
Declaration of Conformity
173
Equipment Required
176
Table D-1 Equipment Required for the Agilent 8156A (1310/1550Nm)
177
Test Record
178
Test Failure
178
Instrument Specification
178
Performance Test
179
Total Insertion Loss Test
180
Figure D-1 Total Insertion Loss Test Setup 1, Options 100, 101, 121
180
Figure D-2 Total Insertion Loss Test Setup 1, Options 201, 221
181
Figure D-3 Total Insertion Loss Test Setup 1, Option 350
181
Figure D-4 Total Insertion Loss Test Setup 2, Options 100, 101, 121
182
Figure D-5 Total Insertion Loss Test Setup 2, Options 201, 221
182
Linearity/Attenuation Accuracy Test
183
Figure D-6 Total Insertion Loss Test Setup 2, Option 350
183
Attenuation Repeatability Test
185
Return Loss Test
186
Figure D-7 Return Loss Test Setup 1, Options 100, 101, 121
186
Figure D-8 Return Loss Test Setup 2, Options 100, 101
188
Figure D-9 Return Loss Test Setup 2, Option 121
188
Figure D-10 Return Loss Test Setup 1, Options 201, 221
189
Figure D-11 Return Loss Test Setup 2, Option 201
190
Figure D-12 Return Loss Test Setup 2, Option 221
191
Polarization Dependent Loss (PDL): Optional
192
Table D-2 Equipment for the PDL Test 1
192
Figure D-13 PDL Test Setup 1: Reference Measurement
193
Polarization Dependant Loss Test (Mueller Method)
193
Figure D-14 PDL Test Setup 2: Power after DUT
199
Table D-3 Performance Test Agilent 8156A
201
E Cleaning Information
248
Cleaning Instructions for this Instrument
249
Safety Precautions
250
Why Is It Important to Clean Optical Devices
250
What Do I Need for Proper Cleaning
251
Standard Cleaning Equipment
251
Additional Cleaning Equipment
254
Preserving Connectors
257
Making Connections
257
Dust Caps and Shutter Caps
257
Immersion Oil and Other Index Matching Compounds
257
E.5 Cleaning Instrument Housings
258
E.7 How to Clean Connectors
259
An Alternative Procedure
260
Procedure for Stubborn Dirt
261
Procedure for Stubborn Dirt
262
Procedure for Stubborn Dirt
263
Procedure for Stubborn Dirt
264
Preferred Procedure
266
Preferred Procedure
267
E.16 How to Clean Optical Devices Which Are Sensitive to Me Chanical Stress and Pressure
268
E.17 How to Clean Metal Filters or Attenuator Gratings
269
How to Clean Bare Fiber Ends
270
Procedure for Stubborn Dirt
271
Alternative Procedure B
272
Immersion Oil and Other Index Matching Compounds
273
F Error Messages
274
F.1 Display Messages
276
F.2 GPIB Messages
277
Execution Errors
281
Device-Specific Errors
282
Query Errors
283
Instrument Specific Errors
284
5
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Agilent Technologies 8156A Specifications
General
Brand
Agilent Technologies
Model
8156A
Category
Test Equipment
Language
English
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