-8 dB Range Flatness Adjustment
-8 dB Range Flatness Adjustment
1. Connect a precision AC voltmeter to measure the output amplitude as shown below. Connect the BNC cable to the
Wide Band input of the Fluke 5790A.
2. Use the precision AC voltmeter to measure the output amplitude for each setup in the table below.
Setup Nominal Signal
Frequency Amplitude
46* 1 kHz 1.22 Vrms Flatness for -8 dB range
47* 100 kHz 1.22 Vrms Flatness for -8 dB range
48* 1 MHz 1.22 Vrms Flatness for -8 dB range
49* 5 MHz 1.22 Vrms Flatness for -8 dB range
50* 10 MHz 1.22 Vrms Flatness for -8 dB range
51* 20 MHz 1.22 Vrms Flatness for -8 dB range
52* 25 MHz 1.22 Vrms Flatness for -8 dB range
53* 30 MHz 1.22 Vrms Flatness for -8 dB range
* Constants are stored after completing this setup.
3. Using the numeric keypad or knob, adjust the displayed voltage at each setup to match the measured voltage.
Select ENTER VALUE.
4. After performing setup 53:
a. If your calibration procedures require you to verify the adjustment just made, exit the calibration menu and
perform -8 dB Range Flatness Verification.
b. If you are making all the adjustments and then verifying the instrument’s performance, verify the output spec-
ifications of the instrument with the Performance Verification Tests.
396 Agilent 33500 Series Operating and Service Guide