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Krohn-Hite Manuals
Water Filtration Systems
3944
Operating and maintenance manual
Krohn-Hite 3944 Operating And Maintenance Manual
Programmable (ieee-488) filter 3hz to 2mhz lp, hp, bp, br
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Contents
Table of Contents
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Table of Contents
Maintenance Manual
Table of Contents
1 General Description
Introduction
Specifications
Filter Characteristics
Input
Output
General
Options
2 Operation
Introduction
Turn-On Procedure
Self Test
Front Panel Controls and Display
Data Keys and Display
Parameter and Control Keys
Channel Selection
Cutoff Frequency
Input Gain (Pre-Filter)
Output Gain (Post Filter)
Digit Select/Increment and Decrement
Key Click Feature On/Off
Rear Panel Controls and Connectors
Introduction
BNC Connectors
DC Level Adj
Power
GPIB Connector
Filter Operation
Variable Band-Pass and Band-Reject Operation
Band-Pass
Amplitude Response
Phase Response
A Low-Pass Amplitude Response
B High-Pass Amplitude Response
Group Delay
Phase Response
Transient Response
3 Ieee-488 Std (Gpib) Programming
Introduction
Preliminary Programming Information
GPIB Primary Buss Address
IEEE-488 Bus Interface Programming Connector
Ascii Data Commands
Format
Rear Panel GPIB Connector
Types of Data Commands
Table of ASCII Commands
Example 1
Examples
Example 2
Example 3
Ieee-488 Standard Commands
Multi-Line Message
Parallel Polling
Polling Commands
Serial Responses
Service Requests and Serial Polling
Uniline Messages
Example 1 - Microsoft Quick Basic
Model Number and Software Version Format
Parameter Information Format
Programming Examples
Talker Format
Example 2 - Borland Turbo C
Example 3 - National Instrument IBIC
4 Incoming Acceptance
Introduction
Test Equipment Required
Filter Characteristics
Low Pass/High Pass Response
Cutoff Frequency Accuracy
Band-Pass/Band-Reject Response
Stopband Attenuation
Pre-Filter and Post-Filter Gain Accuracy
Noise Check
6Khz High-Pass Filter
2Mhz Low-Pass Filter
AC/DC Coupling Check
Distortion and Maximum Signal Checks
Incoming Acceptance
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Maintenance Manual
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Specifications
3
Turn-On Procedure
4
Band-Pass
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Model 3940/3944
Programmable (IEEE-488) Filter
3Hz to 2MHz
LP, HP, BP, BR
Operating and Maintenance Manual
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