31A Manual.pdf

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Model 31A
1Hz to 99kHz
Elliptical High-Pass
Plug-In Filter Card
for Model 3905B/3916B Chassis
Operating Manual
Service and Warranty
Krohn-Hite Instruments are designed and manufactured in accordance with sound engineering
practices and should give long trouble-free service under normal operating conditions. If your
instrument fails to provide satisfactory service and you are unable to locate the source of trouble,
contact our Service Department at (508) 580-1660, giving all the information available concerning the
failure.
DO NOT return the instrument without our written or verbal authorization to do so. After contacting us,
we will issue a Return Authorization Number which should be referenced on the packing slip and
purchase order. In most cases, we will be able to supply you with the information necessary to repair
the instrument, avoiding any transportation problems and costs. When it becomes necessary to return
the instrument to the factory, kindly pack it carefully and ship it to us prepaid.
All Krohn-Hite products are warranted against defective materials and workmanship. This warranty
applies for a period of one year from the date of delivery to the Original Purchaser. Any instrument that
is found within the one year warranty period not to meet these standards, will be repaired or replaced.
This warranty does not apply to electron tubes, fuses or batteries. No other warranty is expressed or
implied.
Krohn-Hite Corporation reserves the right to make design changes at any time without incurring any
obligation to incorporate these changes in instruments previously purchased.
Modifications to this instrument must not be made without the written consent of an authorized
employee of Krohn-Hite Corporation.
MODEL 31 SERIES
HIGH-PASS
ELLIPTICAL
PLUG-IN
FILTER MODULES
MODEL
31-1 :
1Hz
to
99kHz
MODEL
31-2: a.1Hz to
9.9kHz
MODEL
31-3
:
O
.OlHz to 990Hz
OPERATING
AND MAINTENANCE
MAl\TUAL
F
ILT
ER MO
DUL ES
MODEL
MODEL
MODEL
MODEL
MOD
EL
MODEL
MODEL
MODEL
SIN
SIN
SIN
SIN
SIN
SIN
SIN
SIN
MODEL
MODEL
MODEL
MODEL
MODEL
MODEL
MODEL
MODEL
SIN
SIN
SIN
SIN
SIN
SIN
SIN
SIN
M
AI N FRAME
MODEL
- ­
SIN
- ­
M
I
CROPRO
C
E S S O R
MODEL
_ _
SIN _ _
K
RO H
N-RI
TE
C
O RP
O
RAT
ION
255 Bo
d well
Street, Avon, MA 02322-9987
Tel: (50
8)580-166 0;
Fax: (508)583-89
89
Pr
int e
d
11/90
US
A
Model 31
Table
of Contents
Table
of
Conte
ts
1.0
GENERAL DESCRIP110N
1.1
INTRODUCTION
1.2
SPECIFICATIONS
1-1
1-1
1-1
2.0 OPERATION
2-1
2.1
INTRODUCTION
2-1
2-1
2.2
TURN-ON PROCEDURE
2.3
SELF-TEST FEATURE
2-1
2.4
FRONT PANEL CONTROLS and
DISPLAY . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
2-2
2.5
F1LTER CHARACfERISTICS
. . .
.
. .
.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-2
2.5
.1
INTRODUCTIO
N
2-2
2.5
.2
1
kHz AMPLIT
U
D E R
ESPONS E
2-2
2.6
VARIABLE BANDPASS and BAND
REJECT
OPERATION
2-3
2.7
PHASE RESPONSE
2-4
3.0 IEEE-488
srn
(GPID) PROGRAMMING
.
. . ...
. . . . . . ..
. . . .
. . . . . . . .. .•.. . 3-1
3-1
3.1
INTRODUCTION
3.2
FILTER TYPE . . .
.
.
.
. . . . . . . . . . . . . . . . . . . . . . .
.
. .
. . . . . . . . . . . . . .
3-1
3-1
3.3
MODE OF OPERATION
3.4
DEVICE CLEAR
3-1
4.0
INCOMING ACCEPTANCE
...
•...
.
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . .
4.1
INTRODUCTION
4.2
TEST EQUIPMENT
REQU
IRED
.
. . .
.
.
. . .
. . .
.
. .
.
.
. . . .
.
.
. . . . . . . . . . .
4.3
PRE-FILTER AND POST-FILTE
R
GAIN
ACCURACY
. .
.
.
.
.
. . .
.
. . . . . . . . . . .
4.4
PASSBAND GAIN AND DISTORTION
TESTS
4.4
.1
LOW BANDS RIPPL
E R
ESPO NSE
4.4.2
HIGH BAND RIPPL
E
R
E SP
O NSE
(Mod
el
31
-1)
4.4
.3
HIGH BAND RIPP
L
E
R
ES P O NSE
(
Mo de l
31
-2
)
4.4.4
HIGH BAND RIPPL
E R
E
SP
O NSE
(Model
31-3)
4.5
STOPBAND ATTENUATION
4
.5 .1
BAND 1
4.5.2
BAND
2
4.5
.3
BAND
3
4.5.4
BAND
4
4.6
CUTOFF FREQUENCY ACCURACY
. . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.7
NOISE MEASUREMENTS
4-1
4-1
4-1
4-1
4-1
4
-2
4
-2
4
-2
4-3
4-3
4
-3
4
-3
4
-3
4
-3
4-4
4-4

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