Keysight N9038A MXE Service Guide 685
Tests
Amplitude Accuracy at 50 MHz
RF Input 2
9.
Move the power splitter from RF Input 1 to RF Input 2.
10.
Select RF Input 2 on the receiver by pressing
Input/Output
,
RF Input
,
RF
Input Port
,
RF Input 2
.
11.
Perform the following steps for each row listed in
a.
Set the signal generator amplitude to the value listed in the
Nominal Source Amplitude column in
b.
Set the receiver input attenuator as indicated in the Attenuation
by pressing
AMTD Y Scale
,
Attenuation
,
Mech Atten
, [Value].
c.
Set the receiver span as listed in the Span column of
pressing
SPAN X Scale
,
Span
, [Value].
d.
Record the signal generator amplitude, as measured by the power
meter, in the Power Meter Amplitude column of
e.
On the receiver, press
Restart
.
f.
Wait for the instrument to finish averaging.
g.
On the receiver press Peak Search.
h.
Record the signal amplitude, as measured by the receiver in the
Measured Amplitude column of
i.
Calculate the signal amplitude accuracy error using the following
equation, and record the results under the Amplitude Accuracy
Error column:
Amplitude Accuracy Error = Meas_Amp
−
Power_Meter
Table 22-12
Amplitude Accuracy Results (RF Input 2 - Preamp Off)
Nominal
Source
Amplitude
(dBm)
Attenuation
(dB)
Span
Measured
Amplitude
(dBm)
Meas_amp
Power Meter
Amplitude
(dBm)
Power_meter
Amplitude
Accuracy
Error
(dB)
Test Limit
(dB)
−
4
10
2 MHz
±1.16 dB
−
9
10
1 MHz
±1.16 dB
−1
4
10
500 kHz
±1.16 dB
−
4
20
100 kHz
±1.16 dB
−1
4
20
100 kHz
±1.16 dB
−
4
30
100 kHz
±1.16 dB
−
14
30
100 kHz
±1.16 dB
Содержание N9038A
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