TM 11-6625-444-14-1
from either a 115 or 230V ac line. When S2 is set
to 115, the primary windings of T1 are connected
(fig. FO-10 and FO-11)
in parallel. The 230 position of S2 connects the
I n p u t power t o t h e i n s t r u m e n t a n d i n -
windings in series. Secondary windings of T1
terconnection of various assemblies is shown in
provide ac voltages to the power supply (A1) and
the interconnect and wiring diagrams (fig. FO-10
optional data output unit No. 2 (A6). Shielding
and FO-11). Line power is fused by F1 and ap-
between the primary and secondary windings
plied through the contacts of POWER switch S1
prevents coupling of any undesired line signals to
and transformer T1. The primary of T1 consists of
the internal sections of the voltmeter.
two windings which are parallel or series con-
nected through slide switch S2 to allow operation
5-19
