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Table 3. Controls and Indicators (Cont'd)
COMPONENT
DESCRIPTION - FUNCTION
Pilot lamp
(PL401)
Lamp indicator.
Glows when ac power is
applied to the instrument.
Fuse
(F401)
Protects equipment against overloads.
(Slo-Blo - 0.5A at 250V)
TEST binding posts
REMOTE TEST coaxial
connectors
(J303) (J304)
REMOTE STD coaxial
connectors
(J301) (J302)
Ac power connector
(P401)
Test terminals used to connect capacitive
specimens. TEST HI and LO binding posts
used for two-terminal specimens, and TEST
HI, LO,-i* used for three-terminal specimens.
The TEST HI and LO binding posts are
terminals in the test arm of the bridge, and
the
binding post is at chassis ground.
BNC test terminals used to connect
capacitive specimens. The REMOTE TEST HI
and LO inner conductors are in parallel with
the corresponding TEST HI and LO binding
posts (above), and the BNC outer conductors
are at chassis ground.
BNC test terminals used to connect inductive
specimens as well as external standards or
balancing capacitors. The REMOTE STD HI
and LO inner conductors are terminals in the
standard arm of the bridge, and the BNC
outer conductors are at chassis ground.
Three-terminal plug connected to a power
cable. Connects the instrument to an ac
power source.
3.3
STARTING PROCEDURE. Set the power switch to ON.
If the Model 75D is to
be operated in the amplitude mode, allow 15 minutes for warm-up.
For phase-mode
operation, allow one hour warm-up to ensure thermal stabilization of the phase
detector circuit.
75D
b-370
21
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