38 6000 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 7).
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.
Table 11 Bandwidth (-3 dB) Test Limits
Models Test Limits
6 GHz Models All channels (-3 dB), dc to 6 GHz
4 GHz Models All channels (-3 dB), dc to 4 GHz
2.5 GHz Models All channels (-3 dB), dc to 2.5 GHz
1 GHz Models All channels (-3 dB), dc to 1 GHz
Table 12 Equipment Required to Verify Bandwidth (-3 dB)
Equipment Critical Specifications Recommended Model/Part
Signal Generator 100 kHz - 6 GHz at 200 mVrms Keysight N5171B with 6 GHz option
Power Meter 1 MHz - 6 GHz ±3% accuracy Keysight N1914A
Power Sensor 1 MHz - 6 GHz ±3% accuracy Keysight E9304A or N8482A
Power Splitter outputs differ by < 0.20 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
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