BRUEL & KJAER 1623 - Synchronisation with an X-Y Recorder

BRUEL & KJAER 1623

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Pressing

the

Reset

Rev.

pushbutton

moves

the

paper

chart

backwards

to

the

reset

posi-

tion

(about

4

mm

before

the

2Hz

line)

on

the

same

chart.

Pressing

the

Reset

Fwd.

push-

button

moves

the

paper

chart

forwards

to

the

reset

position

(about

4

mm

before

the

2Hz

line)

on

the

next

chart.

4.5.2.

Synchronisation

with

an

X-V

Recorder

22

1.

Connect

the

1623

and

the

X-Y

recorder

into

the

instrumentation

chain

as

required

.

2.

Connect

the

RECORDER SYNC.

socket

on

the

rear

panel

of

the

1623

to

the

X

or

Y

input

of

the

X-Y recorder as

required

. A cable

can

be

made

up

according

to

Fig.4

.6.

3 .

Set

the

rear panel RECORDER SYNC.

slide

switch

to

Fwd.

&

Rev.

4.

Set

the

sensitivity

of

the

X-Y

recorder

as

required

remembering

that

the

1623's

DC

proportional

to

log f

output

gives

+

1,

75

V

per

decade

of

frequency

increase.

5.

Press

the

TRACKING

MODE

Manual

pushbutton

and

manually

tune

the

filter

to

a

convenient

starting

frequency,

i.e.

2Hz,

10Hz

etc

.

using

the

MANUAL

TUNING-

/ PRESET

knob

and

the

frequency

display.

6 .

Press

the

Reset

Rev.

pushbutton

on

the

1

623

and

wait

for

the

recorder

pen

to

stop

moving

.

7. Press

the

Start

pushbutton

on

the

1

623

which

indexes

the

counter

forward

to

a

condition

in

agreement

with

the

frequency

selected

by

the

MANUAL

TUNING-

/ PRESET knob. The

position

of

the

pen

on

the

X-Y

recorder

can

now

be

adjusted

to

a

suitable

starting

position

which

represents

the

frequency

indicated

on

the

1

623

digital

display.

8.

The

MANUAL

TUNING/ PRESET

knob

on

the

1

623

can

be

turned

to

various

frequen-

cies

to

establish

the

calibration

of

the

paper

chart

on

the

X-Y

recorder.

9. Pressing

the

Reset

Rev.

pushbutton

will

move

the

pen

back

to

a

position

just

be-

hind

the

position

equivalent

to

2Hz.

Pressing

the

Start

pushbutton

will

move

the

pen

forward

to

the

position

determined

by

the

MANUAL

.TUNING/ PRESET

knob

(as

displayed

in

the

frequency

display).

1623

Recorder

Sync.

8

Pin

DIN

JP

0802

Pen

down. Pin 4 (normally grounded) is opened

(pen

lifted)

while 1623

is

resetting

1

.-------~o~v

________

~ToX

- Y

Recorder

j

0 V

to

+ 7 V

DC

= 2

Hz

to

20 kHz

Output

Impedance 2,2 kn

77

0310

Fig

. 4 . 6 .

Connections

for

synchronisation

cable

between

1623

and

an

X-Y

recorder.

Soldering

side

of

plug

shown

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