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FM Deviation
There are 3 types of audio reference devices:
Model no.: 152.4002.001/152.4002.002
– single tone (1kHz)
Model no.: 152.4002.003
– with three tone frequencies (1 kHz, 2 kHz, 500 Hz) and two volume
levels.
Model no.: 152.4002.004
– with four tone frequencies (multi tone 1+2 kHz, 1 kHz, 2 kHz and
500 Hz) and two volume levels.
On/off
Selector
switch
Long press: Change frequency
Short press: Change volume
The illustration below shows how to set up for measuring
the VHF FM Deviation on CH 6, 8, 9, 13 or 16:
The test procedure is as follows:
1) Select
“FM Deviation”.
2) Select between CH 6, 8, 9, 13 or 16 with the up/down buttons and press Ok.
3) Hold the audio reference device / AF generator close to the transmitter’s microphone
and activate the tone,
4) Activate the transmitter on selected channel
5) Press
“OK”
on the test box. Maximum deviation and actual deviation are shown on the LCD
display,
6) Press
“OK”
on the test box, and the maximum deviation value will be stored in the memory,
7) Stop the transmitter.
Example of Printout from the Memory:
VHF # 1 Time/date: 08:54:38 / 26-11-2019
CH08-156.400 MHz Maximum deviation: 3.6 kHz
VHF # 1 Time/date: 08:54:51 / 26-11-2019
CH06-156.300 MHz Maximum deviation: 3.6 kHz
VHF TRANSMITTER
AUDIO
REFERENCE
ANT.
Summary of Contents for Futronic MKII
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