Справочник Пользователя для U.S. Department of Defense Test Sets Electron Tube TV-2A/U

Section II. OPERATORS CONTROLS AND INDICATORS

incorrect operation of the PRESS TO TEST switches may damage

the tube under test. Be sure that all the controls and switches are
set properly before inserting the tube in the socket.

Control

ON-OFF switch . . . . . . . . . ..........

PRESS TO TEST (switches P1

through P6).

SHORT TEST (6-position rotary

switch ).

FUNCTION (3-position rotary

switch).

Note. On some equipment

is marked LEAKAGE VR.

this switch

Seven SELECTORS switches:

FIL- and FIL+ 12-position

rotary switches.

GRID (12-position rotary switch) -

Function

In ON position, applies ac power to unit.
Depending on type of test selected, de-

pressing one or more switches applies

power to tube under test.

In OPER. position, permits all tests ex-

cept short test. By turning switch
successively through positions V, W,

X, Y, and Z, various tube electrodes

are tested for interelement shorts.

TEST ---------- Permits all types of tube

tests except voltage reg-

ulator and leakage tests.

VR--------------- Permits tests of thyra-

trons and voltage regu-

lator tubes in conjunc-
tion with PRESS TO

TEST P5 switch.

LEAK . . . . Permits determining in-

terelement leakage in
megohms as indicated
by PLATE meter.

Turning each of the filament switches to

one of positions 1 to 9 connects fila-
ment voltage to correspondingly num-
bered base pin of tube under test. (0

is no connection.)

Turning the switches to position A or B

connects filament voltage to A or B

electrical clip, respectively.

When set to one of positions 1 to 9, con-

nects grid bias and signal voltage to

correspondingly numbered base pin of

tube under test. (0 is no connection.)

In A or B, connects grid bias and

signal voltage to A or B electrical clip.