Equipment information

Krohn-Hite Corporation 3901 Other
Manufacturer
Krohn-Hite Corporation
Model 3901
Date 2005
Category: Measurement instruments
Group Other
Description GPIB Programmable Elliptical Filter
Information
                                    The Krohn-Hite Model 3901 programmable, two channel,
high-pass/low-pass elliptical filter/voltage gain amplifier
is one of a family of programmable filters from Krohn-Hite.
As an elliptical filter, the Model 3901 has two independent
filter channels, one low-pass and the other high-pass,
allowing for band-pass operation with atunable cutoff
frequency range from 1Hz to 99kHz and a role-off rate of
115dB/octave.
Each filter section has aminimum stopband attenuation of
>80dB and apassband ripple oftypically
0.22dB. The 3901 provides either a single-ended or
differential input with a common mode rejection of >60dB.
Input gains up to 40dB in 10dB steps and output gains to
20dB in 10dB steps are also provided. The 3901 will accept
input signals of ±10V peak at 0dB gain and has selectable ac
or dc coupling. The filter is GPIB bus programmable and is
complimented with non-volatile memory for storage of up to
99 front panel set-ups. Overload detectors are standard and
assist the user in detecting excessive input signals or
incorrect gain settings.
The 3901q is also a programmable voltage gain amplifier for
applications that require a low-noise amplifier. The
amplifier has a bandwidth of 1MHz and gains to 60dB,
selectable in 10dB steps, and a wideband noise <100μν.
Typical applications for the Model 3901 are: distortion
measurements, separating specific bandwidths of information,
enhancing signal-to-noise ratio, low noise pre-amplification
and many more.

These manuals are available for the above equipment:

Krohn-Hite Corporation -- 3901 -- User Manual
File name KrohnHite-7102-Manual-Page-1-Picture
Manual Type User Manual
Pages 50
Size 347.01 Kbytes (355337 Bytes)
Language english
Revision 05.16.05
Manual-ID/Number
Date 2005
Quality Electronic document, no scan, very well readable.
Upload date
MD5 06d092c87aed8b433fe8459fc634f0b2
Downloads 103 since 06 September 2015
Information
1.0 Section 1
1.1
Introduction..................................................................................................................1-1
1.2
Specifications...............................................................................................................1-1
1.2.1
Function.........................................................................................................1-1
1.2.2 Filter
Mode..................................................................................................1-1
1.2.3 Amplifier Mode (Each
Channel).........................................................1-2
1.2.4
General............................................................................................................1-3
1.2.5
Options............................................................................................................1-3
1.3 Shipping to Krohn-Hite for Repair or
Calibration......................................1-3
1.4 Claim for Damage in Shipment to Original
Purchaser................................1-4
1.5 External
Cleaning.........................................................................................................1-4
2.0 Section 2
2.1
Introduction..................................................................................................................2-1
2.2 Turn-On
Procedure......................................................................................................2-1
2.3
Self-Test.........................................................................................................................2-1
2.4 Front Panel Controls and
Display.........................................................................2-2
2.4.1 Data Keys and
Display............................................................................2-2
2.4.2 Parameter and Control
Keys...............................................................2-2
2.4.3 Channel
Selection......................................................................................2-4
2.4.4 Cutoff
Frequency......................................................................................2-4
2.4.5 Input Gain
(Pre-Filter)............................................................................2-4
2.4.6 Output Gain
(Post-Filter)......................................................................2-4
2.4.7 Digit Select/ Increment and
Decrement.........................................2-4
2.4.8 Key Click Feature
On/Off......................................................................2-4
2.5 Rear Panel
Controls..................................................................................................2-5
2.5.1
Introduction..................................................................................................2-5
2.5.2 BNC Connectors and
Indicators.........................................................2-5
2.5.2.1 Input
Connectors.........................................................................................2-5
2.5.2.2 Output
Connectors......................................................................................2-5
2.5.2.3
Indicators......................................................................................................2-5
2.5.3 DC Level Adj (Rear
Panel)...................................................................2-5
2.5.4
Power...............................................................................................................2-5
2.5.5 GPIB
Connector.........................................................................................2-5
2.6 Filter Operating
Characteristics............................................................................2-6
2.6.1
Introduction..................................................................................................2-6
2.6.2 Amplitude
Response...............................................................................2-6
2.6.3 Low-Pass Phase
Response......................................................................2-6
2.6.4 High-Pass Phase
Response..................................................................2-7
2.6.5 Group
Delay...............................................................................................2-8
2.6.6 Transient
Response..................................................................................2-8
2.6.7 Impulse
Response......................................................................................2-9
2.6.8 Variable Band-Pass
Operation............................................................2-9
2.6.9 Band-Reject
Operation.........................................................................2-10
3.0 Section 3
3.1
Introduction..................................................................................................................3-1
3.2 Preliminary Programming
Information............................................................3-1
3.2.1 GPIB Primary Bus
Address..................................................................3-1
3.2.2 GPIB Bus Interface Programming
Connector................................3-2
3.3 ASCII Data
Commands............................................................................................3-3
3.3.1
Format............................................................................................................3-3
3.3.2 Types of Data
Commands......................................................................3-3
3.3.3 Table of ASCII
Commands..................................................................3-3
3.3.4
Examples.....................................................................................................3-5
3.3.4.1 Example
1..................................................................................................3-5
3.3.4.2
Example2..................................................................................................3-5
3.3.4.3
Example3..................................................................................................3-5
3.4 IEEE-488 Standard
Commands............................................................................3-6
3.4.1 Multi-Line
Messages...............................................................................3-6
3.4.2 Polling
Commands..................................................................................3-7
3.4.2.1 Parallel
Polling............................................................................................3-7
3.4.2.2 Service Request And Serial
Polling............................................................3-8
3.4.2.3 Serial
Responses.........................................................................................3-8
3.4.3 Uniline
Messages......................................................................................3-9
3.5 Talker
Format...............................................................................................................3-9
3.5.1 Parameter Information
Format.........................................................3-10
3.5.2 Model Number and Software Version
Format............................3-10
3.6 Programming
Examples.........................................................................................3-10
3.6.1 Example 1 - Microsoft Quick
Basic...............................................3-10
3.6.2 Example 2 - Borland Turbo
C............................................................3-12
3.6.3 Example 3 - National Instruments
IBIC......................................3-18
4.0 Section 4
4.1
Introduction..................................................................................................................4-1
4.2 Required Test
Equipment.........................................................................................4-1
4.3 Channel 1 -
High-Pass...............................................................................................4-1
4.3.1 Pre-Filter. Post-Filter and Unity Gain
Accuracy.........................4-1
4.3.2 Low Bands Ripple
Response...............................................................4-2
4.3.3 High Band Ripple
Response...............................................................4-2
4.3.4 Stopband
Attenuation...............................................................................4-3
4.3.4.1
Band1.........................................................................................................4-3
4.3.4.2
Band2.........................................................................................................4-3
4.3.4.3
Band3.........................................................................................................4-3
4.3.4.4
Band4.........................................................................................................4-3
4.3.5 Cutoff Frequency
Accuracy...................................................................4-3
4.3.6 Noise Measurements (2MHz Detector
Bandwidth)...................4-4
4.4 Channel 2 -
Low-Pass...............................................................................................4-4
4.4.1 Pre-Filter, Post-Filter, and Unity Gain
Accuracy......................4-4
4.4.2 Low Band Ripple
Response..................................................................4-5
4.4.3 High Band Ripple
Response...............................................................4-5
4.4.4 Stopband
Attenuation...............................................................................4-5
4.4.4.1
Band1.........................................................................................................4-5
4.4.4.2 Band
2.........................................................................................................4-6
4.4.4.3 Band
4.........................................................................................................4-6
4.4.5 Cutoff Frequency
Accuracy...................................................................4-6
4.4.6 Noise Measurements (2MHz Detector
Bandwidth)...................4-6
4.4.7 Passband Gain and Distortion
Tests...................................................4-7
KrohnHite-7102-Manual-Page-1-Picture
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