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Table 5.
Equipment Performance Checklist (Cont'd)
STEP
4
C.
(Cont'd)
ITEM
ACTION OR CONDITION
PERFORMANCE STANDARD
Phase Discrimi¬
nation Check,
a.
Set MULTIPLY C switch
a. None.
0.01 Multiply C
to 0.01.
Range
b.
Set DIVIDE G/MULTIPLY
b. None.
R switch to 10.
c»
Set meter switch to ZERO
c. None.
LEFT.
d. Zero balance the bridge
as described in para¬
graph 3.5.
e„
Set meter switch to ZERO
CENTER.
f.
If necessary, adjust C
ZERO FINE control to
center the NULL
INDICATOR pointer.
g.
Set CONDUCTANCE
control to 100 pmhos on
the G-scale.
d. NULL INDICATOR
pointer dips to within
one subdivision of zero
on LO sector of dial
scale.
e. NULL INDICATOR
pointer deflects toward
midscale.
f. NULL INDICATOR
pointer is at midscale
increment.
g. NULL INDICATOR
pointer deflects away
from midscale.
h.
Adjust PHASE control until h. NULL INDICATOR
NULL INDICATOR pointer
is centered.
i.
Set CONDUCTANCE
control to 650 pmhos on
the G-scale.
j.
Adjust CAPACITANCE
control until NULL
INDICATOR pointer is
centered on midscale
increment and read the
CAPACITANCE dial
pointer is at midscale
increment.
i. NULL INDICATOR
pointer deflects away
from midscale.
j. Capacitance is within
±
0.3 pF.
(times 0JD1 MULTIPLY C setting).
75D
b-370
52
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