Post-Demodulation - Keysight M9290A Manual

Post-Demod ulation
Description
Maximum Audio
Frequency Span
Filters
High Pass
Low Pass
Band Pass
82
Specifications
20 Hz
50 Hz
300 Hz
400 Hz
300 Hz
3 kHz
15 kHz
30 kHz
80 kHz
300 kHz
100 kHz (> 20 kHz Bessel)
Manual
CCITT
A-Weighted
C-Weighted
C-Message
a
CCIR-1k Weighted
a
CCIR-2k Weighted
CCIR Unweighted
Supplemental Information
1/2  Channel BW
2-Pole Butterworth
2-Pole Butterworth
2-Pole Butterworth
10-Pole Butterworth; used to attenuate sub-audible\
signaling tones
5-Pole Butterworth
5-Pole Butterworth
5-Pole Butterworth
3-Pole Butterworth
3-Pole Butterworth
3-Pole Butterworth
9-Pole Bessel; provides linear phase response to
reduce distortion of square-wave modulation, such
as FSK or BPSK
Manually tuned by user, range 300 Hz to 20 MHz;
5-Pole Butterworth; for use with high modulation
rates
ITU-T O.41, or ITU-T P.53; known as
"psophometric"
ANSI IEC rev 179
Roughly equivalent to 50 Hz HPF with 10 kHz LPF
IEEE 743, or BSTM 41004; similar in shape to
CCITT, sometimes called "psophometric"
ITU-R 468, CCIR 468-2 Weighted, or DIN 45 405
ITU 468 ARM or CCIR/ARM (Average Responding
Meter), commonly referred to as "Dolby" filter
a
ITU-R 468 Unweighted