SPM-32A ... SPM-36A 5.5 Selectivity, bandwidth selectable
5-13
SPM-35A:
Table 5-13 Selectivity (SPM-35A)
Image frequency and IF attenuation
for input levels ≤ 0 dBm
SPM-32A/-33A/-34A/-36A
. . . . . . . . . . . . . . > 60 dB
SPM-35A:
at B = 25 Hz to 3.1 kHz . . . . . . . . . . . . . . . ≥Š 60 dB
at B = 5 Hz . . . . . . . . . . . . . . . . . . . . . . ≥Š 40 dB
3 dB band-
width
(nominal)
Use with VFT
systems
Attenuation at frequency offset ∆f
≤ 0.5 dB ≤ 3 dB ≥ 17 dB ≥ 50 dB
5 Hz
25 Hz
100 Hz
200 Hz
400 Hz
3100 Hz
1
—
—
FM 120
FM 240
FM 480
—
—
—
± 25 Hz
± 60 Hz
± 120 Hz
—
5 Hz
2
± 12 Hz
± 45 Hz
± 100 Hz
± 200 Hz
± 2.7 kHz
2
± 10 Hz
± 50 Hz
± 100 Hz
± 200 Hz
± 400 Hz
—
± 20 Hz
3
± 100 Hz
± 350 Hz
± 700 Hz
± 1 kHz
± 2 kHz
4
1 Effective noise bandwidth 3.1 kHz + 15 %
2 Bandwidth for attenuation <
3 dB
3 Stop-band attenuation ≥ 55 dB
4 Stop-band attenuation ≥ 55 dB
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