(14) Storage temperature range.
(a) Model 887A, -40C to +70C (-40F to 158F).
(b) Model 887AB, -40C to -60C (-40F to +140F).
(15) Shock.
Meets requirements of MILT-945A and MIL-S-910B.
(16) Input power.
Model 887A 115/230 Vac 10%, 50 to 440 Hz; Model
887AB 115/230 Vac 10%, 50 to 440 Hz and rechargeable battery operation
(minimum 30 hours operation on full charge).
(17) Weight.
Model
887A
approximately
13
lbs,
Model
887AB
approximately 14 lbs.
(18) Size.
7 in high x 8 1/2 in wide x 14 3/4 in deep.
Learning Event 3:
DESCRIBE OPERATION OF THE 887AB/AN DIFFERENTIAL VOLTMETER
1.
The input power connections of the instrument are normally factory-
wired for 115-volt operation.
230-volt input power connections are
described on a decal fastened to the power transformer (fig 5-7).
Input
power connections are effected through a three-wire power cord. The third
wire is a ground wire to connect the instrument chassis to the power system
ground. When a two-to-three wire adapter is used, fasten the green wire to
the power-system ground.
Figure 5-7.
Location and function of rear panel control
99
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