BRUEL & KJAER 1623 - Page 27

BRUEL & KJAER 1623

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4.

Set

the

PAPER SPEED knob on

the

2306

to EXT.

5. Press

the

TRACKING MODE

Manual

pushbutton and

manually

tune

the

filter

to

con-

venient

starting

frequency, i.e.

2Hz,

10Hz

etc.

using

the

MANUAL

TUNING/

PRESET knob and

the

frequency display. ·

6. Press

the

Reset

Forward

pushbutton on

the

1

623

and

wait

up

to

10

s

for

the

digi-

tal

counter

in

the

1623

to

achieve

the

reset

condition.

The

chart

paper on

the

2306

will

move

forward

to an arbitrary position.

7. Press

the

Start

pushbutton

on

the

1

623

which

indexes

the

counter

in

the

1

623

for-

ward

to

a

condition

in agreement

with

the

frequency

selected by

the

MANUAL

TUN-

ING/PRESET knob. The position of

the

recording

chart

on

the

2306

can

now

be ad-

justed

with

the

paper

drive

thumbwheel

(PAPER DRIVE

pushbutton

"Off")

so

that

the

· pen lies over

the

frequency indicated on

the

1

623

digital

display.

8.

With

the

PAPER DRIVE pushbutton on

the

2306

"On"

the

MANUAL

TUNING-

/PRESET knob on

the

1623

can be

turned

in

the

clockwise

direction

to

check

that

the

chart

movement

is synchronised.

If

the

tuned

frequency

is reduced

the

paper

feed

will

stop and

will

recommence

when

the

previously

reached

frequency

is ex-

ceeded. Chart

synchronisation

is

not

lost.

9. Press the

Reset

Forward

pushbutton

to

move

the

chart

paper

forward

to

about

4

mm

before

the

2

Hz

line

on

the next chart. Press

the

Start

pushbutton

to

move

the

chart

paper

forward

to

the

frequency indicated

on

the

frequency

display.

2306

External

Power

/ Remote

Control

2306

Remote

Control

7

Pin

DIN

JP

0703

8 Pin

DIN

JP

0802

Valid

for

use

with

2306s

with

serial

Nos.

lower

than 718058

Valid

for

use

with

2306s

with

serial No. 718058 and

higher

and

with

2309s

8 Pin

DIN

JP

0802

1623

Recorder

Sync.

1623

Recorder

Sync.

770309

! 1

Fig.4.5.

Connections

for

synchronisation cable

between

1623

and

the Portable

Level

Recorders Types

2306

and

2309.

Appli-

cable

for

both

forward

and

backward

and

forward-only

paper

movement. Soldering side

of

plugs

shown

For

2306s

modified

to

run

in

both

the

backward

and

forward

directions

and

for

2309s

The

synchronisation

procedure

is

the same as for

unmodified

2306's

except

that

the

rear panel RECORDER SYNC. slide

switch

can be set

to

Fwd.

&

Rev.

so

that

the

chart

paper also moves backwards

when

turning

the

MANUAL

TUNING/PRESET knob back-

wards.

21

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