Eberline ESP-1 - OPERATING THE INSTRUMENT

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SPA-3)

to

a

more

usable

rate

from

the

speaker.

The

operator

can

set

the

rate

heard

from

the

speaker

to

be

equal

to

the

detector

count

rate

or

equal

to

the

detector

count

rate

divided

by

either

64

or

256,

Figure

3-1

explains

the

switch

settings.

f.

MASK

(two

SPST

switches):

One

switch

disables

the

Scaler

Mode.

The

other

disables

the

Inquiry/Calibration

Mode

except

for

the

Rate

Meter

"alarm

setting.”

Either

function

or

both

may

be

disabled.

Figure

3-1

explains

the

switches.

g.

TEST:

This

switch

is

for

use

with

automatic

testing

only

and

should

always

be

set

in

the

operate

position

(both

poles

up,

toward

PC

board).

B.

PREPARATION

FOR

USE

AND

OPERATIONAL

CHECK

3-4

1.

The

instrument

should

be

provided

to

the

operator

already

calibrated

and

with

the

proper

probe

attached

(section

УШ).

The

instrument

should

be

checked

for

physical

damage.

Insure

that

the

instrument

is

operating

by

pressing

the

ON/OFF

switch,

energizing

the

instrument

and

causing

the

LCD

readout

to

show

the

bar

graph

on

the

first

line

and

a

numerical

value

of

count

rate

on

the

second

line.

If

the

first

character

of

the

display

is

steady,

battery

output

is

adequate.

If

the

first

character

of

the

display

is

blinking,

the

operator

should

consider

replacing

the

batteries

before

proceeding.

Press

RESET.

If

the

bar

graph

is

displayed

and

is

varying,

the

ESP-1

is

working.

Exposure

to

a

radiation

check

source

will

confirm

proper

operation

by

causing

the

bar

graph

level

and

the

digital

value

to

increase.

Press

and

hold

down

the

LIGHT

switch.

The

display

should

be

illuminated.

If

the

outside

light

is

too

bright,

shield

the

display

so

that

the

instrument

light

can

be

seen.

Release

the

LIGHT

Switch.

Press

the

SPKR

switch

and

listen

for

an

audio

indication

that

the

instrument

is

detecting

"events."

This

indication

is

a

series

of

"click"

sounds

from

the

speaker.

The

presence

of

this

indication

confirms

that

the

ESP-1

is

operating,

although

its

absence

does

not

confirm

that

the

instrument

is

not

operating.

OPERATING

THE

INSTRUMENT

The

ESP-1

is

simple

and

straight

forward

in

its

operation.

Turn

the

ESP-1

on

by

pressing

the

ON/OFF

switch

to

obtain

a

display

on

the

LCD.

Rate

Meter

Mode

(refer

to

figure

3-2)

The

instrument

is

always

in

Rate

Meter

Mode

when

it

is

first

turned

on.

The

display

will

read:

1ШПШ

(BAR

GRAPH]

RATEMETER

READING

ESP1.MAN/February

1992

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