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Chapter 4 Calibration Procedures
+20 dB Range Flatness Verification
4
4
+20 dB Range Flatness Verification
This procedure checks the high frequency ac amplitude flatness above
100 kHz on the +20dB attenuator range. (Flatness is relative to 1 kHz.)
1 Connect the power meter to measure the output voltage of the
instrument as shown below.
Caution Most power meters will require an attenuator or special power head to
measure the +20 dB output.
2 Set up the function generator as follows:
• Output impedance: 50 Ω (press and select Output Setup).
•Waveform: Sine
• Frequency: 100 kHz
• Amplitude: 23.90 dBm
Make sure the output is enabled.
3 On the power meter, use the Relative Power function to set the current
reading as the reference value. This will allow you to compare future
measurement results in dB.
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