TB 9-4910-555-35
a. Performance Check
DC POWER SUPPLY NO.2
PART OF
POWER
BOLT or
SUPPLY
CLAMP
CURRENT
DC CURRENT SHUNT
STIMULUS LOOP
PROBE
TEST
INSTRUMENT
Figure 1. Dc current - equipment setup.
NOTE
Fabricate a current stimulus loop as shown in figure 1. The
loop design should be 20 turns of No. 10 insulated copper wire
with a bundle diameter of the turns being no more than 1 inch.
The inside diameter of the loop should be 6 inches, 1 inch.
Care should be taken to ensure that the loop does not overheat.
NOTE
Clamp current probe to stimulus loop with arrow on probe
pointing in direction of current flow.
CAUTION
While performing this paragraph, minimize the time that
current is running through the loop. High current will cause
the wire to heat, thus increasing resistance and decreasing the
loop current.
(2) Set TEST SELECT switches to 90.
(3) Press and hold TEST pushbutton until CAL appears on TI display. Release
TEST pushbutton.