Agilent Technologies 8000 Series Specifikace Strana 42
- Strana / 162
- Tabulka s obsahem
- ŘEŠENÍ PROBLÉMŮ
- KNIHY
Hodnocené. / 5. Na základě hodnocení zákazníků
Chapter 3: Testing Performance
To test input resistance
42
To test input resistance
This test checks the input resistance of the vertical inputs. A four-wire measurement is used to
accurately measure the 50 Ω and 1 MΩ inputs.
Specification: 1 MΩ ±1% and 50 Ω ±1.5%
Equipment Required
Procedure
1
Set up the multimeter to make a four-wire resistance measurement.
2 Assemble the test cables.
a Use the two BNC-to-banana adapters to connect one end of each BNC cable to the four-
wire resistance connections on the multimeter.
b Connect the free ends of the cables to the BNC tee.
See Figure 3-2.
Figure 3-2
Input Resistance Equipment Setup
3 Connect the male end of the BNC tee to the channel 1 input of the oscilloscope.
4 Press Default Setup to set the oscilloscope to default conditions.
5 Press the Input key for Channel 1 to select 1 MΩ, then 50 Ω, and verify resistance
readings of 1 MΩ ±10 kΩ and 50 Ω ±0.75 Ω respectively.
6 Record the readings in the Performance Test Record.
7 Repeat steps 3 through 6 on the remaining channels, and on the external trigger of the
oscilloscope.
Equipment Critical Specifications Recommended Model/Part
Digital Multimeter Measure resistance (4-wire) at better than
±0.1% accuracy
Agilent 34401A
Cables (2) BNC Agilent 10503A
Adapter BNC Tee (m)(f)(f) Agilent 1250-0781
Adapters (2) BNC (f) to dual banana (m) Agilent 1251-2277
To ohmmeter
4-wire inputs
To oscilloscope
channel input
- Service Guide 1
- In This Book 5
- Contents 7
- 6 Replacing Assemblies 8
- 7 Replaceable Parts 8
- 8 Theory of Operation 8
- General Information 10
- Accessories supplied 13
- Accessories available 14
- Options available 15
- ± 5°C from the temperature 16
- Environmental Conditions 17
- Measurement Category 17
- Oscilloscope Dimensions 18
- Preparing for Use 19
- Setting Up the Oscilloscope 20
- To inspect package contents 21
- Figure 2-1 21
- To connect power 22
- Attaching the Probe Connector 25
- Probing the Circuit 26
- To connect the digital probe 28
- Digital probe lead set 29
- 40-pin Connector Pinout 30
- Figure 2-14 31
- To turn on the oscilloscope 32
- To turn off the oscilloscope 32
- Probe Compensation 33
- To clean the oscilloscope 35
- Testing Performance 37
- Clear Display 39
- Averaging 39
- Specifications 39
- Performance Test Procedures 39
- Fluke MET/CAL Procedures 39
- To test the DC calibrator 40
- To test input resistance 42
- Connect the equipment 43
- Select Close 45
- (Supply) Minimum Maximum 45
- Set the scale from the 46
- Set the offset from the 46
- To test bandwidth 47
- To verify threshold accuracy 49
- Connections 50
- High-to-Low Transitions 55
- Threshold Voltage Setting V2 56
- Low-to-High Transitions 57
- To test time scale accuracy 59
- Oscilloscope 60
- Sine Wave Source 60
- Frequency Reference 60
- Agilent Technologies 64
- Range Supply Limits 65
- Performance Test Record 66
- Calibrating and Adjusting 67
- To run the self calibration 69
- Troubleshooting 71
- Default Setup 73
- 54830F01a 75
- Primary Trouble Isolation 76
- Run oscilloscope self-tests 77
- Self Calibration 78
- Performance” on page 37 78
- No Display Trouble Isolation 79
- Input Pin # 7 65432 1 81
- Replace any shorted assembly 84
- Replace the power supply 84
- To check probe power outputs 85
- To Check the keyboard 86
- To check the LEDs 87
- Intel D915GUX Motherboard 88
- To Reset 89
- 5 and 7 89
- To setup the BIOS 91
- Figure 5-12 93
- Software Revisions 94
- Replacing Assemblies 95
- Bottom sleeve fasteners 99
- Removing bottom sleeve 100
- Connecting Mylar flex sables 101
- Disconnecting W8 104
- Access Hole 105
- Removing the BNC nuts 108
- Figure 6-17 112
- Opening in side of 131
- Fan control board cables 131
- Acquisition board cables 131
- Figure 6-32 132
- Lift board out of chassis 134
- To remove and replace a fan 135
- Mylar flex cables 136
- T10 Torx Screws 136
- Replaceable Parts 137
- Power Cords 139
- Exploded Views 140
- Replaceable Parts List 145
- Theory of Operation 149
- Figure 8-1 150
- Logic Trigger 154
- Attenuator Theory 155
- Acquisition Theory 155
- • Trigger levels 156
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