Dynascan B&K 667 Kullanım Kılavuzu - Sayfa 12

Test Ekipmanları Dynascan B&K 667 için çevrimiçi göz atın veya pdf Kullanım Kılavuzu indirin. Dynascan B&K 667 12 sayfaları. Solid state tube tester

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CALIBRATION

INSTRUCTIONS

The sensitivity of the leakage test circuit in the Model

667 is adjusted

at the

factorv

that

a leakage

100

megohms

just

reads

the

GRID

EMISSION—REJECT

area of the meter

scale.

Should this sensitivity

control

require

readjustment,

proceed

in the fol-

lowing manner:

1.) Remove main panel from case, after removing screws from panel and

center of bottom

of carrying case.

(Between

molded feet)

2.) Place a 100 megohm

resistor in tube socket #6 between pin

1 and 9.

3.) Rotate SELECTOR

switch

to position #1.

4.)

Depress

the

LEAKAGE

pushbutton

and

observe

the

meter.

Adjust

the white trimpot on the P.C. board adjacent to the meter until the

meter

pointer

reads

at the division

of the

GREEN

and

the

GRID

I MISSION—REJECT

sections

of the scale.

The shorts test circuit is factory adjusted to a sensitivity of one megohm.,

Should this circuit require readjusting, proceed in the following manner.

1.)

Remove

main

panel

from

case as above.

2.) Place a one megohm

resistor in tube socket #6 between pin 1 ] and 9.

3.) Rotate the SELECTOR

switch to position #1.

4.) While

observing

the SHORTS

light,

adjust

the

blue

trimmer

po-

tentiometer on the P.C.

board

until the SHORTS

light just barely

glows.

5.)

Reassemble

tester.