R3765/67G Series Network Analyzer Operation Manual
10.9 Dynamic Level Accuracy
10-50
10.9.1.3.2 B PORT Measurement for Dynamic Level Accuracy
(1)
Connect two 3-dB attenuator, step attenuator using two RF cables between SOURCE and
B PORT shown in Figure 10-30.
Figure 10-30 Connections for B PORT Measurement for Dynamic Level Accuracy
(2)
Press [MEAS] and {B/R} to set the B PORT measurement mode.
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Dynamic level accuracy at 50 MHz
(3)
Press [CENTER], [5], [0] and [MHz] to set the center frequency to 50 MHz.
(4)
Press [SPAN], [0] and [x1] to set the span to 0 MHz.
(5)
Press [AVG], {IF RBW}, [1], [0], [0] and [x1] to set the RBW to 100 Hz.
(6)
Press [MKR] to set the marker on.
(7)
Press [MENU], {POWER}, [6] and [x1] to set the output level to 6 dBm.
(8)
Set the step attenuator to 20 dB.
(9)
Press [CAL] and {NORMALIZE (THRU)} to do normalization.
(10) Set the step attenuator to 10 dB.
(11) Read out the marker level.
(12) Repeat steps (10) and (11) on each set level listed on Table 10-2.
(13) For each set level, calculate the dynamic level error using the following formula:
(dynamic level error) = (measured value) - (Offset value)
NOTE:
The offset value is a attenuator error at the reference point.
(Offset value)=(calibration factor of the attenuator at the reference point)-(calibration
factor of the attenuator at the set level)
