Agilent Technologies InfiniiVision 7000 Series Service Manual page 42

2 Testing Performance
42
9 Change the signal generator output frequency according to
the maximum frequency for the oscilloscope using the
following:
• 1 GHz Models: 1 GHz
• 500 MHz Models: 500 MHz
• 350 MHz Models: 350 MHz
• 100 MHz Models: 100 MHz
10 Referencing the frequency from step 9, set the power
meter Cal Factor % to the frequency value on the
calibration chart on the power sensor.
11 Set the oscilloscope sweep speed according to the
following:
• 1 GHz Models: 500 ps/div
• 500 MHz Models: 1 ns/div
• 350 MHz Models: 2 ns/div
• 100 MHz Models: 5 ns/div
12 Note the oscilloscope Std Dev(1) reading at the bottom of
the screen.
13 Note the reading on the power meter and covert to Vrms
using the expression:
14 Calculate the response using the expression:
response(dB) = 20 log
Example If:
Pmeas
1_MHz
Std Dev(n)
Pmeas
max_freq
Std Dev(n)

Vout

10

Vout
= 892 uW
= 210.4 mV
1MHz
= 687 uW
= 161.6 mV
max freq
7000 Series Oscilloscopes Service Guide

/ Vin
max freq max freq


/ Vin
1 MHz 1 MHz