HP ESA-L1500A, Руководство пользователя и калибровки

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Chapter 9 289
Performance Verification Tests
21. Absolute Amplitude, Vernier, and Power Sweep Accuracy, Options 1DN and 1DQ
Figure 9-24 Absolute Amplitude, Vernier, and Power Sweep Accuracy Test
Setup
CAUTION
Use only 75
Ω
cables, connectors, or adapters on instruments with 75
Ω
connectors, or damage to the connectors will occur.
2. Zero and calibrate the measuring receiver and 100 kHz to 1500 MHz
power sensor in log mode (power reads out in dBm), as described in
the measuring receiver operation manual. Enter the power sensor’s
50 MHz Cal Factor into the measuring receiver.
3. Connect the 100 kHz to 1500 MHz power sensor to the RF Out 50
Ω
as shown in Figure 9-24 .
75
Ω
RF Out only: Connect the power sensor to the RF Out 75
Ω
as
shown in Figure 9-24 .
4. On the spectrum analyzer, press:
Source Amptd, Amplitude
,
On Off (On), 0 dBm
(50
Ω
RF Output only)
Source Amptd, Amplitude
,
On Off (On), +42.76 dBmV
(75
Ω
RF Output only)
Single Sweep
Source Amptd
,
Attenuation Auto Man, 0 dB
5. Read the power level displayed on the measuring receiver and record
the result as TR Entry 1 of the performance verification test record
as the Absolute Amplitude Accuracy.
75
Ω
RF Out only: Add 6 dB to the power level displayed on the
measuring receiver and record the result as TR Entry 1 of the
performance verification test record as the absolute accuracy.