Krohn-Hite Corporation 30A-1 Filter
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Model:
30A-1
Date:
Category:
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Description:
LOW-PASS ELLIPTICAL PLUG-IN FILTER MODULE
Information
INTRODUCTION
The model 30A Series are low-pass, 7-pole, 6-zero elliptical Plug-In filters providing
115dB/octave roll-off, a minimum stopband attenuation of >80dB, and a typical passband ripple
of 0.22dB peak-to-peak. The Model 30A-1 covers the range from 1Hz to 99kHz. The Model
30A-2 operates from 0.1Hz to 9.9kHz and from 0.01Hz to 990Hz in the Model 30A-3,
With its 115dB/octave rolloff rate, the model 30A provides a much narrower transition region
than an 8-pole Butterworth, and much less passband attenuation near cutoff. The transition
region from –3dB to –85dB is 64% of fc (cutoff), compared to 242% for the 8-pole Butterworth.
From –0.3dB to –85.6dB, it becomes 70% of fc compared to 404%. This permits lower sampling
rates and wider bandwidths, resulting in lower total system costs.
The model 30A Series is part of an ever expanding line of Plug-In Filter cards for use in the
Model 3905C and 3916C Mainframes, which accommodates 5 to 16 Filter cards respectively.
Manual type:
User Manual
Pages:
22
Size:
704.60 Kbytes (721511 Bytes)
Language:
english
Revision:
Manual ID:
Date:
Quality:
Electronic document, no scan, very well readable.
Upload date:
17 January 2021
MD5:
b5f174fd83e0e467dbcd271c28005126
Downloads:
430
Information
GENERAL DESCRIPTION ... 1-1
1.1
INTRODUCTION ... 1-1
1.2
SPECIFICATIONS ... 1-1
2.0
OPERATION ... 2-1
INTRODUCTION ... 2-1
TURN-ON PROCEDURE ... 2-1
SELF-TEST FEATURE ... 2-1
FRONT PANEL CONTROLS and DISPLAY ... 2-2
Filter CHARACTERISTICS ... 2-3
2.5.1 Introduction ... 2-3
2.5.2 Normalized Ripple Response ... 2-3
VARIABLE BANDPASS and BAND REJECT OPERATION ... 2-3
TRANSIENT RESPONSE ... 2-4
PHASE RESPONSE ... 2-5
DELAY TIME ... 2-6
GROUP DELAY ... 2-6
3.0
IEEE-488 STD (GPIB) PROGRAMMING ... 3-1
3.1
INTRODUCTION ... 3-1
3.2
Filter TYPE ... 3-1
3.3
MODE OF OPERATION ... 3-1
3.4
DEVICE CLEAR ... 3-1
ACCEPTANCE ... 4-1
INTRODUCTION ... 4-1
TEST EQUIPMENT REQUIRED ... 4-1
PRE-FILTER, POST-FILTER AND UNITY GAIN ACCURACY ... 4-1
PASSBAND GAIN AND DISTORTION TESTS ... 4-2
4.4.1 Low Bands Ripple Response ... 4-2
4.4.2 High Band Ripple Response (Model(30A-1) ... 4-2
4.4.3 High Band Ripple Response (Model(30A-2) ... 4-3
4.4.4 High Band Ripple Response (Model(30A-3) ... 4-3
STOPBAND ATTENUATION ... 4-3
4.5.1 Band 1 ... 4-3
4.5.2 Band 2 ... 4-3
4.5.3 Band 3 ... 4-3
4.5.4 Band 4 ... 4-4
CUTOFF FREQUENCY ... 4-4
NOISE MEASUREMENTS ... 4-4
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