Anritsu MS8608A, Руководство по эксплуатации, Страница: 155 / 338

6-43
Section 6 Performance Tests
Step Procedure
7 Move the marker to the peak of the spectrum
waveform and make the marker the
∆
marker.
8 Set the center frequency to twice the fundamental
wave frequency to display the second harmonic on
the screen.
The
∆
marker reading indicates the level difference
between the fundamental wave and the second
harmonic.
If the level difference is 80 dB or more, set the REF
LEVEL to –50 dBm. Confirm that the ATT set
value is 0 dB.
9
Connect the LPF VLF-141 (fp=800 MHz)
10
Set the SG as follows:
OUTPUT FREQ .................................... 780 MHz
OUTPUT LEVEL ................................. –20 dBm
11
Set the MS8608A/MS8609A as follows:
Center Freq ............................................ 780 MHz
Span .......................................................... 10 kHz
Reference Level .................................... –20 dBm
Attenuator ................................................... 10 dB
12
Repeats steps 6 to 8.
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