Eberline ESP-1 - SECTION III. DETAILED OPERATION; DESCRIPTION OF CONTROLS AND CONNECTORS

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MODEL

Е$Р-1

SECTION

Ш.

DETAILED

OPERATION

A.

DESCRIPTION

OF

CONTROLS

AND

CONNECTORS

1.

Operator

Controls

-

External

(figure

2-1)

a.

b.

ON/OFF:

Pressing

this

switch

turns

the

instrument

on

or

off.

MODE:

Pressing

the

MODE

switch

changes

the

mode

from

that

currently

selected

to

one

of

the

other

modes

(Rate

Meter,

Scaler,

or

Inquiry/Calibration.)

RESET:

The

functions

of

the

RESET

switch

depend

on

the

operating

mode

selected

for

the

instrument.

(1)

(2)

(©)

In

the

Rate

Meter

Mode

the

RESET

switch

is

used

to

maintain

the

bar

graph

on

the

display.

In

the

Scaler

Mode

the

RESET

switch

resets

the

ESP-1

to

a

new

count

interval

and

starts

the

count.

When

used

simultaneously

with

"+"

or

"-",

pressing

the

RESET

will

increase

or

decrease

the

selected

parameter

(count

interval

or

alarm

set

point).

In

the

Inquiry/Calibration

Mode

the

RESET

switch

has

two

functions.

Used

alone,

when

units

are

displayed

on

the

first

line,

it

allows

the

operator

to

select

or

to

change

to

another

unit.

When

the

operator

is

examining

or

setting

parameters

(calibration

constant,

dcad

time,

or

alarm),

RESET

used

simultaneously

with

"+"

or

"-"

will

increase

or

decrease

the

value

set

for

that

parameter.

LIGHT:

When

the

LIGHT

switch

is

pressed,

the

display

is

illuminated.

+:

The

functions

of

the

"+"

switch

depend

on

the

operating

mode.

O

(2)

In

Rate

Meter

Mode:

The

ESP-1

automatically

varies

response

time

with

count

rate

to

maintain

a

maximum

+5

percent

standard

deviation

above

2500

cpm.

The

normal

(fast)

response

time

ranges

between

1.0

and

10.0

seconds.

A

slower

response

time,

ranging

from

1.8

to

29.0

seconds

is

available

to

maintain

a

maximum

+3

percent

standard

deviation

above

2500

cpm.

The

improved

accuracy/slow

response

time

is

operative

while

the

"+"

switch

is

pressed

and

for

one

minute

after

it

is

released.

In

Scaler

Mode:

The

"+"

switch

is

used

to

set

up

the

instrument

to

count

events

or

basic

units

over

a

selected

time

interval.

When

used

simultaneously

with

RESET,

it

increases

the

count

interval

or

alarm

set

point.

ESP1.MAN/February

1992

3-1

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