Racal Instruments 9916 - Description of Controls

Racal Instruments 9916

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DESCRIPTION

OF

CONTROLS

POWER

0NiOFF

Switch:

RESOLUTION

Switch:

OPERATf/STANDBY

Switch:

FUNCTION

Switch:

9916

Vol.

2

NOTE:

The

switch

function

is

related

to

the

setting

of

the

rear

panel

LINE

POWER/CHARGE

BATTERY POWER

swUch.

Power

ON

Position

The

instrument

will

operate

from

either

line

power

or

optional

battery

supply

as

selected

by

the

rear

panel

LINE

POWER/CHARGf!BATTERY

POWER

switch.

When

CHARGE

is

selected

the

Power

ON

position

will

give

full-rate

battery

charging.

Power

OFF

In

the

OFF

position

the

charging

and

operating

facilities

are

switched

off,

irrepective

of

the

type

of

power

supply.

This

four

position

switch

selects

the

appropriate

gate

time

from

the

time

base

to

give

the

required

resolution.

Generally,

the

switch

will

be

set

so

that

the

measurement

just

fills

the

display.

The

display

units

are

shown

by

the

Units

Indicators.

OPERATE

is

the

normal

signal

measurement

mode.

STAN

D

BY

perm

i

ts

use

of

Battery

Economy

operation

or

Standby

operation

(see

paragraphs

2.6

and

2.7)

accord

ing

to

the

setting

of

the

LINE

POWER/CHARGE/BATTERY

POWER

switch.

The

internal

frequency

standard

remains

powered

when

STANDBY

is

sel·ected.

NORMAL

provides

continuous

measurement

with

automat~c

updating

of

the

display.

BURST

provides

a

single

shot

reading

from

either

cm

intermittent

or

continuous

signal.

2-4

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