Krohn-Hite Corporation 30A SERIES Filter
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30A SERIES
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Description:
LOW-PASS ELLIPTICAL PLUG-IN FILTER MODULE

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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.

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User Manual
Manual type:
User Manual
Pages:
22
Size:
704.60 Kbytes (721511 Bytes)
Language:
english
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Date:
Quality:
Electronic document, no scan, very well readable.
Upload date:
17 January 2021
MD5:
b5f174fd83e0e467dbcd271c28005126
Downloads:
392

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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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