2-8
TM 5-6675-250-20
2-8. ASSEMBLY AND PREPARATION FOR USE (Continued)
A C - D C C O N V E R T E R A S S E M B LY
N O TE
The AC-DC converter assembly is pro-
vided to permit the surveying instru-
ment to be powered from a 115 Vac, 60
o r 4 0 0 H z p o w e r s o u r c e . W h e n c o n-
netted to the AC power source, the con-
v e r t e r s u p p l i e s t h e D C v o l t a g e
n e c e s s a r y t o o p e r a t e t h e i n s t r u m e n t.
The converter and interconnecting elec-
trical cables are stored in the transport
case. Cap assemblies are provided on
the converter to protect the electrical
receptacles when the equipment is not
in use.
a.
R e m o v e c o n v e r t e r a n d a s s o c i a t e d c a b l es
from the transport case when it is needed for use.
b . R e m o v e p r o t e c t i v e c a p s ( 1 a n d 2 ) f r om
receptacles (3 and 4) on converter (5).
c. Connect the 115 Vac cable (6) between the
AC power source and input receptacle (3) on con-
verter (5).
d . C o n n e c t p o w e r c a b l e ( 7 ) b e t w e e n o u t p ut
receptacle (4) on converter (5) and power recep-
tacle (8) on ECU (9).
F I N E - L E V E L I NG
a.
R o t a t e t h e o d o l i t e a l i d a d e ( 1 ) s o t h a t t h e
long axis of the plate level (2) is in the same plane
as one of the tripod legs (3).
