Equipment information:

Wavetek 751A Other
Manufacturer:
Wavetek
Model: 751A
Date: 1984
Category: Measurement instruments
Group: Other
Description: BRICKWALL FILTERS
Information:
                                    The Models 751 A, 752A and 753A are programmable Brickwallâ„¢
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.

These manuals are available for the above equipment:

Wavetek -- 751A -- Service and User Manual
File name: Wavetek-6393-Manual-Page-1-Picture
Manual Type: Service and User Manual
Pages: 92
Size: 13.80 Mbytes (14473940 Bytes)
Language: english
Revision: revised
Manual-ID/Number:
Date: March 1987
Quality: Scanned document, all readable.
Upload date:
MD5: ec8276e51e9092d6ff2d7b7f7d197719
ed2kID: 781d6bb931350cc46174392199d75527
Downloads: 423 since 17 November 2014
Information:
GENERAL DESCRIPTION
1.1
INTRODUCTION...................................................
1.1.1 Model
751A.......................................................
1.1.2 Model
752A.......................................................
1.1.3 Model
753A.......................................................
1.2
OPTIONS................................................................
1.3
DEFINITIONS.......................................................
1.4
SPECIFICATIONS.................................................
1.4.1 Cutoff
Frequency..............................................
1.4.2 Gain
(Pre-filter)...................................................
1.4.3 Filter
Characteristics........................................
1.4.4 Input
Characteristics........................................
1.4.5 Output
Characteristics.....................................
1.4.6
General................................................................
1.4.7
Options................................................................
INITIAL PREPARATION
2.1
INSPECTION..........................................................
2.2 MECHANICAL INSTALLATION..........................
2.3 ELECTRICAL INSTALLATION..........................
2.3.1 Power
Connection............................................
2.3.2 Signal
Connection..........................................
2.3.3 GPIB
Option.....................................................
2.3.4 BCD
Option.....................................................
OPERATION
3.1
INTRODUCTION...................................................
3.2 CONTROLS AND INDICATORS......................
3.3 TYPICAL OPERATING PROCEDURES...........
3.3.1 Model
751A.....................................................
3.3.2 Model
752A.....................................................
3.3.3 Model
753A.....................................................
3.4 REMOTE PROGRAMMING: BCD INTERFACE
3.5 REMOTE PROGRAMMING: GPIB INTERFACE
3.5.1
Introduction.......................................................
3.5.2 Device Address Code...................................
3.5.3
Initialization.....................................................
3.5.4 Listen
State.....................................................
3.5.5 Sending
Data...................................................
CIRCUIT DESCRIPTION
4.1
INTRODUCTION.................................................
4.2 MODEL
751A.....................................................
4.3 MODEL
752A.....................................................
4.4 MODEL
753A.....................................................
4.5 ELLIPTIC FILTERS............................................
CALIBRATION
5.1 FACTORY
REPAIR......................................................................................
5-1
5.2
CALIBRATION...............................................................................................
5-1
SECTION 6 TROUBLESHOOTING
6.1 FACTORY
REPAIR......................................................................................
6-1
6.2
TROUBLESHOOTING..................................................................................
6-1
6.2.1 Filter
Troubleshooting.............................................................................
6-1
6.2.2 Optional GPIB Interface
Troubleshooting............................................ 6-1
SECTION 7 PARTS AND SCHEMATICS
7.1
DRAWINGS....................................................................................................
7-1
7.2
ADDENDA......................................................................................................
7-1
7.3 ORDERING
PARTS......................................................................................
7-1
Wavetek-6393-Manual-Page-1-Picture
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