BRUEL & KJAER 4915 - Page 11

BRUEL & KJAER 4915

40 pages

To Next Page

To Next Page

To Previous Page

To Previous Page

Loading...

DELAY:

SLOW

MOTION:

INT. GEN:

TRIGGER SOURCE:

"Double

Flash".

Selects

double

flash

ignition

synchronized

with

the

"Line"

or

"Ext."

TRIGGER SOURCE

modes.

It

permits

a

stationary

double

image

of

rotating

and

reciprocating

machine

parts

to

be

ob-

tained

at

two

complementary

points

(ie., 180°

apart)

in

the

motion

cycle

which

may

be

moved

through

one

complete

motion

cycle

using the

DELAY

knob.

When

"Int.

Gen."

is

selected

or

the

frequency

of

the

external

trigger

source

exceeds

aproximately

50 Hz,

operation

is as

with

the

"Phase

Delay"

setting.

See

section

3.5.

"Remote

Control".

Permits

remote

selection

of

"Light

Off",

"Phase

Delay"

or

•"Slow

Motion"

mode

plus

remote

adjustment

of

the phase

delay

via

the

REMOTE

CONTROL

INPUT

socket

on

the

rear

panel

of

the

4913. See

section

3.8.

Single-turn

control

for

adjustment

of

the

phase

or

time

delay

of

the

flash

ignition

with

respect

to

the

trigger

signal. The

range

of

adjustment

is

from

O

to

360° . and O

to

3,6 s

respectively.

For

operation

without

phase

or

time

delay,

the

DELAY

knob

should

be

set

to

its

extreme

anticlockwise

position.

Single-turn

control

for

adjustment

of

the

perceived

slow

motion

fre-

quency

from

0,05

to

5 Hz

or

speed

from

3

to

300

r/min.

10-turn

control

for

adjusting

the

internal

generator

frequency

from

5

to

105 Hz (ie., 300

to

6300

r/min).

5-position

switch

for

selection

of

the

following

trigger

modes.

"Single

Flash -

Line".

Selects

single

flash

ignition

synchronized

with

the

AC

mains

source

used

to

power

the 4913,

but

triggered

manually

via

the RESET

button

on the

front

panel,

or

remotely

via

SINGLE FLASH

INPUT on the

rear

panel. Is

intended

for

photographic

purposes. See

section

3.6.

"Single

Flash -

Ext.".

Selects

single

flash

ignition

synchronized

with

the

EXT. TRIGGER INPUT signal,

but

triggered

manually

via the RESET

button

on

the

front

panel,

or

remotely

via

the

SINGLE FLASH INPUT on

the

rear

panel. Is

intended

for

photographic

purposes.

See

Section

3.6.

"Line".

Selects

operation

as

stroboscope

with

flash

ignition

triggered

by

the

AC

mains

source

used

to

power

the 4913. The

lamp

flashes

at

the

line

frequency

of

the

mains

source.

See

section

3.4.

"Ext.".

Selects

operation

as

stroboscope

and/or

tachometer,

with

flash

ignition

triggered

by

the EXT. TRIGGER INPUT signal. The lamp flashes

in

synchronism

with

the

trigger

signal

at

frequencies

up

to

approxi-

mately

110 Hz. If the

trigger

frequency

exceeds

110 Hz, the

lamp

will

flash in

synchronism

with

the

highest

sub-multiple

of

the

trigger

fre-

quency

below

11

O Hz.

With

no

external

signal

present

at

the

EXT.

TRIGGER INPUT, the

lamp

will

normally

be

kept

extinguished

except

when the

slow

motion

mode

is

employed.

See

section

3.3.

"Int.

Gen.".

Selects

operation

as

free

running

stroboscope,

with

flash

ignition

triggered

by

the

internal

generator

of

the 4913. The

frequency

at

which

the

lamp

flashes

may

be

adjusted

from

5

to

105

Hz

and is set

by

the

INT. GEN. knob. See

section

3.2.

5

Table of Contents