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SECTION 5 MEASUREMENT
STEP PROCEDURE
14. Turn the rotary knob to adjust the output level so that the noise output of the receiver is set to Vs dB
described in step 11 each time the Edit [^] key of MG3641A/MG3642A is pressed. The value indicated
by the output level indicator is a disturbing wave input level (dB) separated from the desired wave by +∆f ×
n.
15. Return the frequency and output level of MG3641A/MG3642A into the state set in step 12 (frequency
and output level indicators set to +0).
16. Turn the rotary knob to adjust the output level so that the noise output of the receiver is set to Vs dB
described in step 12 each time the Edit [∨] key of MG3641A/MG3642A is pressed. The value indicated
by the output level indicator is a disturbing wave input level separated from the desired wave by –∆f × n.
17. The selectivity characteristics are obtained from steps 14 and 16, taking into account the following:
+20+15+10+50–5–10–15–20
Disturbing wave input level (dB)
Fre
q
uenc
y
deviation from desired fre
q
uenc
y
[
kHz
]