Agilent Technologies 8000 Series Dokumentacja Strona 47
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Chapter 3: Testing Performance
To test bandwidth
47
To test bandwidth
This test checks the bandwidth of the oscilloscope.
Specification
Equipment Required
Equivalent Time Test
1
Connect the equipment.
a With the N cable, connect the signal generator to the power splitter input. Connect the
power sensor to one output of the power splitter.
b With an N-to-BNC adapter, connect the other splitter output to the channel 1 input.
2
Press Default Setup to set the oscilloscope to default conditions.
3 Select Acquisition from the Setup menu. Select Equivalent Time sampling mode.
Enable averaging and set the # of Averages to 32. Select Close.
4 Set the vertical scale for Channel 1 to 100 mV/div using the knob. Select 50Ω input
impedance.
5 Set the sweep speed to 50 ns/div using the horizontal sweep speed knob.
6 Set the signal generator for 10 MHz at +5.0 dBm.
The signal on the oscilloscope screen should be about five cycles at six divisions amplitude.
7
Select V
amptd
from the Voltage submenu of the Measure menu.
8 After the measurement settles (when averaging is complete, about 10 seconds), note
the V
amptd (1)
reading at the bottom of the screen. V
10MHz
=__________________mV.
9 If using an 8482A Power Meter/Sensor, ensure that the power sensor calibration factors
are loaded into the appropriate table of the E4418B Power Meter and that the table is
turned on.
Equivalent Time Real Time
MSO/DSO8064A DC to ≥600 MHz MSO/DSO8064A DC to ≥600 MHz
MSO/DSO8104A DC to ≥1 GHz MSO/DSO8104A DC to ≥1 GHz
Equipment Critical Specifications Recommended Model/Part
Signal Generator 1—1 GHz at ≈200 mVrms Agilent 8656B/8648A
Power Meter/Sensor 1—1 GHz ±3% accuracy Agilent E4418B/8482A
Power Splitter outputs differ by <±0.15 dB Agilent 11667A
Cable Type N (m) 24 inch Agilent 11500B
Adapter Type N (m) to BNC (m) Agilent 1250-0082
Bandwidth Check Limits
Do not exceed 6 divisions when making the bandwidth check.
- 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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