Equipment information

Krohn-Hite Corporation 3320 Other
Manufacturer
Krohn-Hite Corporation
Model 3320
Date 1978
Category: Measurement instruments
Group Other
Description DIGITALLY TUNED VARIABLE FILTER
Information
                                    The Models 3320, 3321, 3322 and 3323 Filters illustrated in
Figure 1, are variable, electronic Filters with digitally
tuned cutoff frequencies". The Models 3320 and 3322 have a
cutoff frequency range from 0, 001 Hz to 99. 9 kHz. The
Models 3321 and 3323 are tunable over the range from 0, 01
Hz to 99. 9 kHz. The pass-band gain is unity (Odb) or 10
(20db), with attenuation rates of 24db per octave outside
the pass-band. Maximum attenuation is greater than 80db and
the output hum and noise is less than 500 microvolts. The
Model 3320 (Model 3321) can function as either a High-Pass
or Low-Pass Filter, In the High-Pass mode of operation the
maximum input signal is plus or minus 7 volts peak in the
Odb gain position, plus or minus 0. 7 volts peak in the 20db
gain position, and the upper 3db point occurs at
approximately 1 MHz. In the Low-Pass mode the Filter is
direct-coupled and the combined ac plus dc input signal
should not exceed ±1 volts peak in the Odb gain position and
±0. 7 volts peak in the 20db gain position.
The Model 3322 (Model 3323) consists of two of the Model
3320 (Model 332 1) mounted in a single cabinet isolated from
each other, with independent power supplies and input and
output connectors. When these two filter channels are
switched to the same mode of operation and cascaded, with
both channels set to the same cutoff frequency, the Model
3322 (Model 3323) will function as a High-Pass or Low- Pass
Filter with an attenuation rate of 48db per octave. If the
two channels are connected in series, and one channel is
operated in the Low-Pass mode and the other channel in the
High-Pass mode, the Model 3322 (Model 3323) will function as
a Band-Pass Filter with an attenuation rate of 24db per
octave outside the pass-band. W'hen the two channels are
connected in parallel, as described in Section 2.3, the
Model 3322 (Model 3323) will function as either a
Band-Reject Filter with cutoff frequency limits from 0. 00 1
Hz to 99.9 kHz (0.01 Hz to 99.9 kHz - Model 3323) or provide
a null at any frequency between 0. 01 Hz and 10 kHz (0. 1 Hz
and 10 kHz - Model 3323).
The Filter has a maximally flat (Butterworth) characteristic
when the FUNCTION switch(s) is in the Low-Pass MAX FLAT
position. For pulse-type wave-forms this switch should be in
the Low-Pass RC (Low Q) position, optimum for transient-free
filtering.

These manuals are available for the above equipment:

Krohn-Hite Corporation -- 3320 -- Service and User Manual
File name KrohnHite-7098-Manual-Page-1-Picture
Manual Type Service and User Manual
Pages 32
Size 1.36 Mbytes (1423675 Bytes)
Language english
Revision
Manual-ID/Number
Date 1981
Quality Scanned document, all readable.
Upload date
MD5 d350865ab4d0f2ca381f9b01a7524a51
Downloads 185 since 06 September 2015
Information
OPERATING AND MAINTENANCE MANUAL

GENERAL DESCRIPTION
.....................................................................
1
2 OPERATING INSTRUCTIONS
...............................................................
8
3 CIRCUIT DESCRIPTION
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14
4 MAINTENANCE
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18
5 CALIBRATION AND ADJUSTMENT
............................................... 23
KrohnHite-7098-Manual-Page-1-Picture
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