Wavetek - 751A - Sonstiges
Hersteller:
Gerät:
751A
Datum:
1984
Kategorie:
Gruppe:
Untergruppe:
Informationen
The Models 751 A, 752A and 753A are programmable Brickwall™
Filters offering near-ideal passband and stopband
characteristics.
The instruments employ 7th-order (7 poles and 6 zeroes)
Elliptic or Cauer filters with design values of0.3dBpeak-
to-peak passband ripple and 85 dB stopband attenuation. The
transition from passband to stopband has a 115 dB/octave
rolloff rate. For low pass response, the stopband is at 1.7
x cutoff frequency; high pass response, the stopband is 0.6
x cutoff for frequency.
The cutoff frequency may be programmed from 10 Hz to 99 kHz
with 2-digit resolution and 1 Hz to 9 Hz with
1-digit resolution. Pre-filter, and (where available)
postfilter gain may be programmed in 10 dB steps, up to the
maximum available.
These instruments are extremely valuable in signal-
processing applications for band-limiting prior to sampling
to prevent aliasing, or for separating a narrow spectrum of
interest from noise or other interfering signals. In
addition to the extremely sharp filtering, they provide
programmable low noise amplification for applications
involving low-level signals and overload indicators to
ensure operation within their linear dynamic range.
The basic differences of the three models are summarized here.
Model 751A is a single-channel band pass filter which
consists of a high-pass section followed by a low- pass
section. Low-pass and high-pass cutoff frequencies may be
independently programmed. Prefilter gain, up to 40 dB, may
be programmed, as well as postfilter gain, up to 20 dB. In
addition, there are individual input and output overload
indicators.
1 Handbuch
Reparatur und Bedienungsanleitung
Dokumenttyp:
Reparatur und Bedienungsanleitung
Seitenanzahl:
92
Größe:
13,8 MB
Sprache:
Englisch
Revision:
revised
Dokument-ID:
Datum:
Qualität:
Gescanntes Dokument, alles ist lesbar.
Upload Datum:
17. November 2014
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