Table of Contents
Advertisement
Table 3.
Controls and Indicator (Cont'd)
COMPONENT
DESCRIPTION - FUNCTION
C/L switch
Two-position rotary switch.
Normally, the
(S303)
C position is used for capacitance measure¬
ments and tests, and the L position is used for
inductance measurements and tests.
However,
the normal switch positions are reversed tempo¬
rarily during phase adjustments (paragraphs
3.9, 3.10, 3.12, 3.13)
whenever the MULTIPLY
C switch is in the 1 position.
Meter indicator.
Continuously monitors
the output of the bridge circuit.
The
meter circuit is either amplitude-sensitive or
phase-sensitive in accordance with the
position of the meter switch (below).
Two-position slide switch used in conjunction
with the NULL INDICATOR.
ZERO LEFT position:
Connects the NULL INDICATOR to the
amplitude detector, and the meter is
sensitive to both C and G.
Meter zero is
the extreme left marking on the LO sector of
the meter scale.
ZERO CENTER position:
Connects the NULL INDICATOR to the
phase detector, and the meter is sensitive to
C while ignoring G.
Meter sensitivity is
increased by a factor of 10. Meter zero is
the midscale marking; therefore, a zero-
balance indication for the ZERO CENTER
position should be at midscale.
If the
bridge circuit is unbalanced, the meter
indicates whether the imbalance is caused
by LO or a HI capacitance.
75 D
b-370
NULL INDICATOR
(Ml 01)
Meter switch
(SI 01)
19
Advertisement
Table of Contents
