Keysight Technologies DSOX1102A, Service Manual

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26 1000 X-Series Oscilloscopes Service Guide
2
Testing Performance
To verify bandwidth (-3 dB)
This test checks the bandwidth (-3 dB) of the oscilloscope. In this test you will use
a signal generator and a power meter.
1 Connect the equipment (see Figure 3 ).
a Use the N cable to connect the signal generator to the input of the power
splitter input.
b Connect the power sensor to one output of the power splitter.
c Use an N-to-BNC adapter to connect the other splitter output to the
channel 1 input using a 50 ohm feedthrough terminator at the oscilloscope
input BNC.
Table 6 Bandwidth (-3 dB) Test Limits
Models Test Limits
100 MHz Models All channels (-3 dB), dc to 100 MHz
70 MHz Models All channels (-3 dB), dc to 70 MHz
50 MHz Models All channels (-3 dB), dc to 50 MHz
Table 7 Equipment Required to Verify Bandwidth (-3 dB)
Equipment Critical Specifications Recommended Model/Part
Signal Generator 100 kHz - 100 MHz at 200 mVrms Keysight N5181A
Power Meter 1 MHz - 100 MHz ±3% accuracy Keysight N1914A
Power Sensor 1 MHz - 100 MHz ±3% accuracy Keysight E9304A or N8482A
Power Splitter outputs differ by < 0.15 dB Keysight 11667A
Cable Type N (m) 24 inch Keysight 11500B
Adapter Type N (m) to BNC (m) Keysight 1250-0082 or
Pomona 3288 with Pomona
3533
50 Ohm Feedthrough
Termination
50
Ω
BNC (f) to BNC (m) Keysight 0960-0301