Leader Electronics Corp. LDM-171 - Use of Output; Maintenance

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- -

.....

~-------~-----

Fig.

4-4

100 30 10 3 ;

-~--~·_;'i'/

sn

o

-•o

-20

-ao,

..

-

-so

...o

-+---Decibel

range

•..

··;·····~

'100

30

10

3 1

0.3

'1/frnV

~20t•40

)(W

...

30

~4a-

...

20

--~(J/•10

-80/0

-70/-10

d6

Fig. 4-5

4.5

Use

of

OUTPUT

An

AC

output

voltage proportional

to

the meter

reading

is

provided

at

the

Olltput terminals. When

the meter reads

fu!J.

,~;""the

voltage across the

output

terminals

is

1 Vrms· (if there

is

no

connection

between the terminals).

Output

impedance

is

ap-

proximately 1

kQ.

When

the

DISTORTION function

is

used, an

$·''

oscilto$.00pe can be connected

to

the

output

ter-

minals

to

.o.bi&rve

the

distortion

component

and

analyze its characteristics.

When the

S/N function

is

used, noise componeots

can

be

amplified and observed.

When the VOLTMETER function

is

employed,

the

output

can

be

used

to

monitor

the input signal

waveform, or

as

an amplifier function.

5.

MAINTENANCE

The LDM-171

is

designed

to

give

stable perform-

ance

in

normal use.

If

aging of parts causes mal-

function or loss

of

adjustment,

contact

your sales

representative.

• Removal

of

the housing

The upper and lower parts

of

the housing can

be

detached by removing the four lugs for winding

the power

cord

and the

two

additional screws

indicated right.

-

9-

'

'\

'

'

Remove these six screws.

Related product manuals

Leader Electronics Corp. LCR-740