Filter
Top Products
SECTION 5 MEASUREMENT
(2) Measurement procedure
STEP PROCEDURE
1. Set the MG3641A/MG3642A frequency to fd = 154.45 MHz.
2. Set the MG3641A/MG3642A frequency deviation to 70 % of the specified maximum frequency deviation
(3.5 kHz if the maximum frequency deviation is 5 kHz). Then, set the internal modulation frequency to 1
kHz.
3. Set the MG3641A/MG3642A to a sufficiently high output (ordinarily 30 dB
µ
or more) and apply it to the
receiver.
4. Turn off the squelch of the receiver, modulate the receiver to receiving frequency 154.45 MHz (maximize
the value of the level meter), adjust the volume adjustment volume of the receiver, and obtain the rated
output of the receiver from the indicator of the level meter.
5. Place the MG3641A/MG3642A into the relative frequency display mode.
6. While holding the receiver state, MG3641A/MG3642A modulation frequency, and frequency deviation to
the same, apply the spurious frequency of the receiver, fs = fd + 2 fi, to the receiver. The spurious
frequency is obtained by adding 2 × fi = 2 × 10.7 MHz in the relative frequency mode.
7. Place the MG3641A/MG3642A into the relative level mode and set the output level resolution to 1 dB.
8. Adjust the MG3641A/MG3642A output level so that the value of the level meter becomes the same as the
rated output obtained in step 4.
9. The value indicated by the MG3641A/MG3642A output level indicator in step 8 is a spurious sensitivity.