Description of Vtvm

TM 11-6625-599-12

TM 11-6625-599-12

1-7. Description of Vtvm

a. All circuit components of the v t v m a r e

contained on a single chassis unit which slides

into a gray metal case equipped with a leather

c a r r y i n g handle. The operating controls and

the indicating meter are mounted on the front

p a n e l (fig. 1). The rear panel (fig. 2) con-

t a i n s the line power fuse, the output connec-

tions for an external recorder, and a gain ad-

justment for the recorder output,

b. The front and real panels are part of the

chassis assembly. F o u r r u b b e r b u m p e r s a r e

provided at the bottom of the case. Test L e a d

Set CS1331/U (test leads) is supplieed to pro-

v i d e connections for measuring voltage. One

end of each test lead terrninates in a standard-

t y p e banana plug for i n s e r t i o n in an input

binding post on the vtvm. The other ends ter-

m i n a t e in alligator clips which are connected

access the unknown voltage source being meas-

u red.

c. The power cord is fitted with a three-

p r o n g , polarized plug. A two-prong adapter

with a grounding lead attached is provided for

Figure 2. Volmeter, Electronic AN/USM-98A,

rear view.

use with conventional two-prong power (outlets.