Keysight 9000 Series Service Manual page 38

Chapter 3: Testing Performance
Analog Bandwidth - Maximum Frequency Check
g When the RMS voltage measurement setup window appears, configure this measurement as
follows:
Source = Channel 1
Measurement Area = Entire Display
RMS Type = AC
7 Set the generator to apply a 50 MHz sine wave with a peak-to-peak amplitude of about 4 divisions.
• Use the following table to determine the approximate required signal amplitude.
The amplitude values in the table below are not absolutely required. If your generator is unable
to produce the recommended amplitude, then set the generator to the highest value that does not
produce a vertically clipped signal on the scope.
Table 3-1. Nominal Generator Amplitude Settings
Scope Vertical
Scale Setting
5 mV/div
10 mV/div
20 mV/div
50 mV/div
100 mV/div
200 mV/div
500 mV/div
1 V/div
8 Measure the input power to the scope channel and convert this measurement to Volts RMS using the
expression:
V = P
in meas
For example, if the power meter reading is 4.0 μW, then Vin = (4.0*10
Record the RMS voltage in the Analog Bandwidth - Maximum Frequency Check section of the
Performance Test Record (in the Vin @ 50 MHz column).
38
Generator Signal Generator Signal
Amplitude (Vp-p) Amplitude (dBm)
0.02 -30
0.04 -24
0.08 -18
0.20 -10
0.40 -4
0.80 +2
2.0 +10
4.0 +16
×
50Ω
-6 1/2
* 50Ω) = 14.1 mVrms.