HP 1660 Series

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Theory of Operation

This chapter tells the theory of operation for the logic analyzer and describes the

self-tests. The information in this chapter is to help you understand how the logic

analyzer operates and what the self-tests are testing. This information is not

intended for component-level repair.

8–2

Main Page

Table of Contents6
Accessories13
Specifications (Logic Analyzer)14
Specifications (Oscilloscope)15
Characteristics (Logic Analyzer)16
Characteristics (Oscilloscope)16
Supplemental Characteristics (Logic Analyzer)17
Supplemental Characteristics (Oscilloscope)20
Recommended Test Equipment (Logic Analyzer)24
Recommended Test Equipment (Oscilloscope)25
To Inspect the Logic Analyzer27
To Apply Power28
To Operate the User Interface28
To Set the Line Voltage28
To Degauss the Display29
To Clean the Logic Analyzer29
To Test the Logic Analyzer29
To Perform the Self-Tests32
To Make the Test Connectors (Logic Analyzer)35
To Test the Threshold Accuracy (Logic Analyzer)37
Set up the Equipment37
Set up the Logic Analyzer38
Connect the Logic Analyzer38
Test the TTL Threshold39
Test the ECL Threshold41
Test the - User Threshold42
Test the 0 V User Threshold44
Test the Next Pod45
To Test the Glitch Capture (Logic Analyzer)46
Set up the Equipment46
Set up the Logic Analyzer47
Connect the Logic Analyzer47
Test the Glitch Capture on the Connected Channels49
Test the Next Channels51
To Test the Single-Clock, Single-Edge, State Acquisition (Logic Analyzer)52
Set up the Equipment52
Set up the Logic Analyzer53
Connect the Logic Analyzer55
Verify the Test Signal57
Check the Setup/Hold Combination59
Test the Next Channels63
To Test the Multiple-Clock, Multiple-Edge, State Acquisition (Logic Analyzer)64
Set up the Equipment64
Set up the Logic Analyzer65
Connect the Logic Analyzer67
Verify the Test Signal69
Check the Setup/Hold with Single Clock Edges, Multiple Clocks71
Test the Next Channels75
To Test the Single-Clock, Multiple-Edge, State Acquisition (Logic Analyzer)76
Set up the Equipment76
Set up the Logic Analyzer77
Connect the Logic Analyzer79
Verify the Test Signal81
Check the Setup/Hold with Single Clock, Multiple Clock Edges83
Test the Next Channels87
To Test the Time Interval Accuracy (Logic Analyzer)88
Set up the Equipment88
Set up the Logic Analyzer89
Connect the Logic Analyzer91
Acquire the Data92
To Test the CAL OUTPUT Ports (Oscilloscope)93
Set up the Equipment93
Set up the Logic Analyzer94
Verify the DC CAL OUTPUT Port95
Set up the Logic Analyzer96
Verify the AC CAL OUTPUT Port96
To Test the Input Resistance (Oscilloscope)97
Set up the Equipment97
Set up the Logic Analyzer98
Connect the Logic Analyzer99
Acquire the Data100
Perform an Operational Accuracy Calibration100
To Test the Voltage Measurement Accuracy (Oscilloscope)101
Set up the Equipment101
Set up the Logic Analyzer102
Connect the Logic Analyzer103
Acquire the Data104
To Test the Offset Accuracy (Oscilloscope)105
Set up the Equipment105
Set up the Logic Analyzer106
Connect the Logic Analyzer107
Acquire the Zero Input Data108
Acquire the DC Input Data109
To Test the Bandwidth (Oscilloscope)110
Set up the Equipment110
Set up the Logic Analyzer111
Connect the Logic Analyzer113
Acquire the Data114
To Test the Time Measurement Accuracy (Oscilloscope)115
Set up the Equipment115
Set up the Logic Analyzer116
Connect the Logic Analyzer118
Acquire the Data118
To Test the Trigger Sensitivity (Oscilloscope)119
Set up the Equipment119
Set up the Logic Analyzer120
Connect the Logic Analyzer122
Acquire the Data122
Performance Test Record (Logic Analyzer)123
Performance Test Record (Oscilloscope)130
Calibrating and Adjusting134
Logic Analyzer Calibration135
To Calibrate the Oscilloscope136
Set up the Equipment136
Load the Default Calibration Factors137
Self Cal Menu Calibrations138
To Adjust the CRT Monitor Alignment139
To Adjust the CRT Intensity141
To Use the Flowcharts145
To Check the Power-Up Tests158
To Run the Self-Tests159
To Test the Power Supply Voltages165
To Test the CRT Monitor Signals167
To Test the Keyboard Signals168
To Test the Disk Drive Voltages169
To Perform the BNC Test171
To Test the Logic Analyzer Probe Cables172
To Test the Auxiliary Power176
To Remove and Replace the Handle182
To Remove and Replace the Feet and Tilt Stand182
To Remove and Replace the Cover182
To Remove and Replace the Disk Drive183
Power Supply183
CPU Board183
To Remove and Replace the Power Supply184
To Remove and Replace the CPU Board184
To Remove and Replace the Switch Actuator Assembly185
To Remove and Replace the Rear Panel Assembly186
Acquisition Board ( Oscilloscope Board for HP 1660AS-Series)186
To Remove and Replace the Acquisition Board ( Oscilloscope Board for HP 1660AS-Series)187
To Remove and Replace the Front Panel and Keyboard188
To Remove and Replace the Intensity Adjustment188
To Remove and Replace the Monitor189
To Remove and Replace the Handle Plate189
To Remove and Replace the Fan190
To Remove and Replace the Line Filter190
To Remove and Replace the HP-IB and RS-232C Cables191
To Return Assemblies192
Replaceable Parts Ordering195
Exploded View196
Replaceable Parts List197
Power Cables and Plug Configurations201
Block-Level Theory204
The HP 1660 Series Logic Analyzer204
The Logic Acquisition Board207
The Oscilloscope Board210
Self-Tests Description213
Power-Up Self-Tests213
System Tests (System PV)214
Analyzer Tests (Analy PV)217
Oscilloscope Tests (Scope PV)219
Hp-Ib220

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