Performance Tests 2
Keysight E4416A/E4417A Power Meters Service Guide 35
11 Connect the 30 dB reference attenuator as shown in Figure 2-3:
12 Take a measurement:
Wait 30 seconds to allow the power level to settle, then press on
the power meter.
13 Record the values displayed on both the power meter and DVM displays. Note
down the values in Table 2-2.
14 Repeat step 13 a further 49 times to obtain a set of 50 pairs of measured
values.
15 Calculate the measurement error for each pair of measured values using the
following equation:
Figure 2-3 Test Setup With Attenuator Connected
Digital Voltmeter
+ input
black
red
Breakout box
Power Sensor
Power Meter
CHANNEL A
Power ref
Power sensor cable
Power sensor cable
Attenuator
− input
These values tend to drift. They must therefore be recorded simultaneously or
with as small a delay as possible between them.
x
DVMValue PowerMeterValue–()
DVMValue
---------------------- ------------------------------------------ -----
⎝⎠
⎛⎞
100×=
%
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