SPM-32A ... SPM-36A 4.2 Operation and features
4-41
1200, 400, 200, 100 Hz bandwidths
These bandwidths are useful for measuring the rms level in a
FM VFT channel to ITU-T specifications.
The level meter should be tuned to the center frequency of
the VFT channel under investigation.
Fig. 4-14 Typical receiver selectivity for
bandwidths 25 and 100 Hz
Nominal 3 dB bandwidth Used for VFT system
100 Hz
200 Hz
400 Hz
1200 Hz
FM 120
FM 240
FM 480
FM 600 Bd
∆F
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