Krohn-Hite 3550 Operating And Maintaining Instruction

SOLID

STATE

VARIABLE

MODEL

OPER

AT

3550

I G

AND

MA

NUAL

FILT

SERIAL

AINT

NO.

ER

__

NANCE

-

KRD

Avon Industrial Park/Bodwell St.,

CD

1975 KROHN- HITE CORPORATION

ITE

CD

R

Avon,

PCRAT

Massachusetts

ID

02322

CO NTENTS

Con ten

ts

Se ction

F

igure

1

2

3

4

5

6

1-1

2-1

2-2

2- 3

GENERAL DESCRI
O P E RAT ING I
IN
CIRCU
MAINTENANC
CA L IBR AT ION A N D

M o del 3 5 50 M ultif

F r ont
Pass Ban
Normalized

2- 4 Sq u a

2- 5 P ha se

4

-]

4 - 2 R e s pons e
5 -1

Appendi

Trims and

x

S c he m a

COMING

re

lockDiagram

AC

IT

DES

and

Rear Pa

d C ha r a c te r i s tic s .

Wa ve

Shif

t . . . . • •e •

of

A djustm e nts .

ti • Layout and

PTION . . . . . . . . .

STRUCTIONS

CEPTANCE

CRIPT

E

IO

N . . . • .

....•..

ADJ

US T M ENT

ILLUSTRATIONS

u n c tion F ilter .

ne

ls

At

tenuati

Response

Q uad r a tic A

on C h a r a ter is tic s

..

. . • • . . . . .'

mplifie

P a r ts L is t

AND

' .

..

. . • . .

INSPEC

.

....

r s •

..

T IO N

P a g e

I

4

I I

15

20

24

P a g e

ii

5

8

8
8

9

16

17

21

~

E nd

Table

3 - ]

5-

6- 1

Acc eptan ce C h eck o ut P r oced u r

]

Te

s t P o in t v s S ig na l

Ca

l ib r

ati

on Proc e d u r e . . . .

Volt

TABLES

ag e

Pa

g e

12

22
26

F ilter, 3 55

0

.1 . 10 ,100

INPUT

.IK

I<ROH

mo

de . 3550

-HITE

filter

F ig u r e

1-1,

Model

3550

Multifunction

ii

Filter

1.1 INTRODUCTION

Se

ctio

SECTION 1

GENERAL DESCRIPTION

n I -

General Descripti

on

T h e Kr oh n - Hi te
that

ope r a t e s

The

c ut o ff

A n

optional

(or

install

1.2 ELECTRICAL SPECIFICATIONS

Function

L o w

-pas

Cutoff

ing

s , high - pa s s , b and -p a s s ,

F

requenc

Model

in

a h

frequencie

rack

-m

th e

Model

y

Range

BAND

3550, shown

igh

-pass, low

s a r e

ounting

I

3550

2 I
3

4

5

F

requenc

y Can1

,01

i n F

-pass, band

independentl

kit

(P a r t No .

in a standard

band-

M U L T IP L IE R

O. 1 2 - 20

10 20 0

l Oa

lK

igu

re 1-1,

-pass, or

y a dj us ta b le

RK

- 38)

is availabl

19" r a c k

reject.

is a mu

bet

spacing

F

2,

RE

lti

func

tion

band

-reject

ween

000

2 H z and 2 0

e f r om Kroh n -Hit e

.

QUE

NC

Y (Hz )

200

20 -

-200

0

-20, 000

20 , 000 - 200, 000

filte

mode

\

r
.

0kHz

.

L ow - p a s s

li

e r switch

p

Cutoff

±50/0

bands
positio
output i s d o wn 3dB a t cu t o
L OW

Bandwidth

Low-Pass

and

high-pass

, effe ct i v e l y a 3 0 i

Frequency

n ; l e s s a c c ur a t e

0 p os i

Cal ibrc tion

1 t h r u 4,

tion.

Mode

: From a

Accu

±lO%

in

200 k Hz ,

functions

nch

'a cy

band

5 with

L OW 0 p
ff

in

MA

pproximate

ea

ch

have

lo n g

X F

scale

RESPONS

ositi

on .

LAT position

ly 0.2

one

decade

fo r

the 5freque n

E switch

Relativ

Hz to c u to

e t o m

a nd

dial

in

MA

id-

app

roximate

ff

setting bet

and

a 5-

position

cy

band

s .

X F LAT (B u t te r wo r th )

ba n d l ev e l,

l y .12.d B in

we en

2.

multi

the filter

°H z

to

-

Filter, 3550

High-Pass

z.

3 M H

Ban

d-Pass:
wi d th
p r

oduce

Mod

Both cut

(Butterwo

s a n

inserti

e : F r om cu to ff s e tting o f 2.0 Hz to 2 00 k Hz , to approx

rth

mid-band frequenc

Ban

d-Reject:
pass

ba nd t o app r o
sharp null can
freque

n c y, and t he L o w P a s s s e cti

justing both

Response

Choice
tion
selected

Attenuation

Nominal

Charocteristi

of

and L ow Q (da

by

24

d ials fo r

4 p ol e

mean!')

Slope

dB

Bot h

be obta

Butterworth

per octave

offs adjustable fro
response) both
on

loss

of 6 dB, with

y.

cutoff

f r eque

ximately 0.

in ed b y s

minim

cs

m p e d

um

respon

of a switch

In

c u t o

nci

es

adj us ta b

2 Hz ,

upper

etting the

on

to

r e s pon s e .

(Maxi

mally fia t

se) fortra n s i

on

the

rear

all

rn od e s

m 2 . 0 Hz t o 2

ff frequencies

the

3dB

po

le

fr om

passband

High Pa

half

ss

the

null

res

pon s e ) fo r fre que n cy d om a in op er a -

ent-fr

pa ne

l.

of ope

r a tion .

00

k Hz , F o r m in im um

a r e s et

int

s a t 0

2. 0 Hz

to

app

s ec t io n

fr e qu e n

to

c oinc id e.

.8 and]

to 200 k Hz .

r o

ximatel

to

about twice

cy,

e e tim e d o m ain

ima

tel y

ba

nd -

Th

is

. 2 5

times the

Lower

y 3

MHz

. A

the

null

and a lt e r n a te l y a

operati

on,

d-

Pa$S

Band Gain

Zero

db

+ 1

Maxi mum

Great

Input

Max

Max

Input

Output

Max

Attenuat

er

than

Character;

Volta

g e :

DC

Component:

Irnped

Characteri

Volta

ge : ±7V

Max Current:

Internal

Imp

db

in

ian

60

dB

stic

5

±7V

anc

e : 10

51iC5

± 15

ed an ce :

pass

peak

peak

rna

band.

to 2 MHz.

±lOOV.

Megohms

to 2 MHz.

peak.

50

ohms.

in

parallel

wit

h 50

pi.

Hum lind Hoi

Less

than

2

se

200

uv

,

except

400

uv

in

"BAN

D

RE

JECT"

rn

od e ,

Output

DC

Le

ve l

Stobi Iity

Section

1 -

General

Descript

ion

± l m y / oC t ± l

Front

Panel

Control

High

Pass

Sectio

Low

Pass

Function

P o w e r

Reor

Ponel

Re sp ons e

Gr ound

Sectio

Switch: LP,

ON

Switch

Control

Switc

Switch

DC L e ve l: P

L ine Switch:

Terminals

rnv

Zhr .

Somewhat

s

n : Hz d i a l a n d m

n : Hz d ialand

HP

s

h : M

AX

: C HASSIS,

ot

entio

m et

er.

115V

/230V.

g r e

ultip

multip

,

BP,

E R .

FLAT, LOW

FLOATI

NG .

ater

in

l i er swit c

lie

r s witc h .

Q.

BR

m od e .

h.

Front and r e

ar

pa nels , one E NC

r ec ept a cle w it h d e t

POWIIT

Henuirernants

105-125

Operating

occ

Dimensions

or

Temperature

to

50aC .

and

210-250

Range

Weights

Model

355

0 8 1/ 2"

acha

bl e l in e cord. On

volts,

sin

gle

Overa

Widt h

con

ne ct o r fo r INP U

e r ea r

phase,

ll

D im e n s io n s

50-400

Height

3 1/ 2"

termina l

Hz,

Dept

h

13 "

T,

10

on e

watts.

9

Ib/4kg

for

for cha

We i

Ne

t

OUTPUT.

ssi

s g r ou nd ing .

ht

hipping

S

14 Ib / 7kg

AC

power

3

F ilte r, 3 5 50

2.1

INITIAL

Thefilte r
mee

t s all

filter

Th

e M od e l

ve

ha

T

he
50 - 4 00 H z ,
r e

ar

theLIN

b e u se d. Wh e n th e
t

he230V

SETUP

is adjusted

specifications

is

shi

pped

complete

3550

s hould

oc c u rred

Filter may

pa nel, s el e ct s t

E s wit c h toth e I 15V po sitio

po

in s hipping

be

or

2 10 - 2 5 0 volts , 50- 400 H z. A I1 5 / 230 V LINE

sit

io n,and

OPE

and

checked

.

It
and

be

unpacked

.

op er ated f

he

filt

er's mode

fi

lte

r is to

r e

pla

SECTION

2

RATING INSI CIIONS

ca r eful

is

then

afte r unpacking is

Check

rom

c e thefu s e with a 1/ 16 ampe r e

be

an

op e r a

all

n . In t his

l y inour

ag e d

and

tested aga

ready for

ca r efull y

controls

A C p owe r sourc

of

operation, Wh

ted from

and

for

mod

230 VAC, move t

test

department

in

in s pect

freedom

e , a 1/ 8

ed for

e o f e

en the

before

use.

ithe

ampe

to

insure

shipmen

damage that ma

of

ope

ration

r 10 5-12 5 v olts ,

wi

t ch , locatedon the

AC

line

r e 5

he

slo

-bl

o t ype .

.

i s 11 5 V, m o

10-

blofu se

L I

NE switch t o

t.

t ha t

The

y

ITlUS

it

ve

t

2.2 CONTROLS AND TERMINALS

2.2.1 Fro" I Ponel

T

he

funct

4

functio

ion

n s

witch

s : L o w P a ss (LP ),

in

the

(figure

top

Hig

2-2)

center
h P a s s (H P),

of the

front

panel

Band Pas

selects

s (B

on e of

P),

o r B a nd R ej e c t (B R ) .

fou

r fi

ltering

g

FRONT

CD

POWER SWITCH (ON IOFF )

® INDICATOR LI GHT

@INPUT

CONNECTOR

® OUTPUT CONNECTOR
® MULT I PL IER
® MULTIP

LIER

SWITCH
SWITCH

oFREQUENCY DIAL

® FREQUE NCY DIA L

® 115 / 23

VI

0V

LI

NE

VIEW

(BNC

(BNC

(HIGH
(LOW

(L

OW

(HIGH

SWITCH

FIGURE

TYPE)

TYPE)

PASS)

PASS)

CUTOFF)

CUTOFF)

2-2.

FRONT AND

F

igur

e 2 - 2. Front

REAR

REAR

PANE

LS

® OUTP UT CONNECTOR

@

INPUT

@

12

FUSE

@POWER

CONN

ECTOR

I/

BA

SLO-

BLO

1/ 16A SLO- BLO 23 4V

RECEPTACLE

!lT

VIEW

(BNC TYPE)

(BNC

V

TYPE)

@ CHASSIS GROUND CONNECTOR
@ GROUND SWITCH

@ RESPONSE SWITCH
@ DC
@

LEVEL

FUNCTION

and

Rea r

POTENTIOMETER
SWITCH

Panels

(FLOATING I CHASSIS)

(MAX

(LP,

FLAT

HP, BPt BR)

(BINDING

I LOW

0)

POST)

:.n

(1)

('l

,...

...

o

...

N

o

v

l't>

-t

PJ

...

...

::J

()Q

5'

til

...

....

c

('l

...

....

o

::l

t1l

.

.

F

ilter, 355

The

cuto

P a s s a nd o

T

he powe

0

ff

frequencies
ne for the LLl\\

r O N swi

tch

are

Pass

and

indicator li

se t

by dia

s ec ion

con t r ol s .

onnec

tors

fo r

s w itch

them

er permits

INPUT

in F

m

B NC C

2.2.2

Rear

Panel

The

R ES P O

t

he

Model

ad

ver

tent

and

disc

ju

stable potentiomet

elects 115

s
The

IN P U T a nd OUT P UT BNC co nn ec to r s a

bingin
A

fuse

g po st p

holder

SE

3 5 50 . T he G RO U. ' D swit

oper

ation, c o n nects

onne

cts

V r 2 30 V A C ope rat i o n .

rovides

l ab e led wit h the r e qu ir e d

and

provides

LOA

eans

for

th e chass
TI

se

panel.

l s

and

rn ul t i pl i e r s w itches, o ne fUI'

s.

g ht

in

the l ower cen

OUTPUT are

ch o

ice

be

twee

located

n M A X

c h, r e ce s s ed in the r e

is

to circuit grou

G . TheDC

L E V ELmultitur n s c r e wd rive r -ad-

ter

comp

in I he l owe r corners

FL

AT

and

ar

panel

nd

in t ne

tting of the ou tpu t D C level. The

gain occup

grounding the

fuse ratin

chassis

y t

g , is a

he

c or ne r s a nd th e

.

lso

mount

the

lete the fr on t

.

LO\

.\,'

0 r e

sp

to pr e v ent i n -

CHAS

SIS

pos it

LINE

ed

on

s w itch

the

l'

Hig

h

pane

on s e

ion

CHASSI

a r

l

of

S

2.3

OPERATING

2.3.1

2.3.2 Ma

2.3.3

section

2.3.4 T u r n

2.4 SPECI AL FUNCTIONS

Conn

Set

cont

PROCEDURE

ect

t he Mod

ke

c o nne cti on s to

the f u n ct i on s wi

ro l s t o t h e r eq u i r ed fr e qu en cy

ON

pu

\'.

,'er.

el 3550

If

sp
the out
cl

ipp ing w

to the

the

INP

tch

to th

e d e s i r e d m od e a nd the

th e inpu t s ig nal

e ci

fied

levels (

put c u r r e nt ex ce ed s ±15m A p e a

ill occu r .

UT

power

and

NOTE

7v

line.

O UT P U

ranges.

exceeds

pe ak, ± IOO

T.

the

m a x im um

High

vdc) or

P a s s and

if

Low Pas s

2.4.1 Narrow Bon

Nar

r owes t

pass

dposs

ban

d

in

the

quencie s equ al a s shown in

6

ba nd - pa s s

figu

r e

2-2,

mod

cu r v e

e i s obta

C. The

ined

by s e

tt

in g bot h c ut o ff

r e s ulting in se r ti on

fre-

loss is