Anritsu ME7840A Manual de usuario Pagina 87

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5-9 IMD This test measures inter-modulation distortion.
Procedure
Prepare the ME7840A as shown in Chapter 3.
Enter the appropriate test values in the displayed
User Input screen. The input fields are described
below:
n
Measurement Type: Already set to “IM” for IMD
– input disabled.
n
Main Tone (MHz): CW Frequency setting for
source 1.
n
Offset (kHz): Offset frequency for Source 2
(Source 2 will be set to Main Tone + Offset).
n
Input Power (dBm): Input RF power to AUT.
n
IMD Order:NEED
n
Test Set Setting: Byte value for setting test set
attenuation and source switch:
IMD OPERATIONS, MEASUREMENT
5-26 ME 7840A OMM
Internal Source Value External Source Value
0dB 8 0dB 0
10 dB 9 10 dB 1
20 dB 10 20 dB 2
30 dB 11 30 dB 3
40 dB 12 40 dB 4
50 dB 13 50 dB 5
60 dB 14 60 dB 6
70 dB 15 70 dB 7
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