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OPERATION
B.
C.
D.
PREPARING THE INSTRUMENT FOR OPERATION
(1)
Set controls
as follows:
MULTIPLIER: 10
RANGE SWITCH: VOLTS
ZERO CHECK WITCH:
Locked
INPUT TERMINAL: Shield with cap
(2)
Turn the bigTER switch to meter +.
The instrument should come
to eero in approximately
5 seconds.
(3)
Rotate the MULTIPLIER switch toward the high sensitivity
end,
adjusting
ZERO as required.
If
it
is
impossible
to
eero
the meter
with the front panel ZERO control,
use COARSE ZERO control
on rear
panel to bring the instrument within
range
of the ZERO control.
(II)
Connect leads as required for measurement. If high impedance is
involved,
the input should be shielded using a coaxial connection or
shielded enclosure.
The
various
accessories
for the Model 600A may
be used.
If the impedance,is low@elow about lOlo ohms) and leads can be kept
short, the binding
post
adapter furnished with the instrument may be
used.
The Keithley Model 6101A Shielded Test Lead will
suffice
for mDst
measurements.
b@XURING VOLTACE
Place RANGE switch at VOLTS. Turn MLTIPLIW. switch to expected
sensitivity
and check meter zero.
Release ZERO check, and read.
If the sensitivity
of the instrument
is increased, recheck the
zero reading.
MKXXlRING CURRENT
(1)
NORMAL method (3 amperes to lo-l3
amperes full
scale)
Turn RANGE switch to desired AMPERES range.
Make sure the switch at the
rear of the instrument is on the NORMAL position.
Connect current source
to the input,
Full scale sensitivity
is the product of the settings
of
the RANGE switch and MULTIPLIEJt. Check aero with the ZERO CHECK switch
and then read the unknown current.~
The full
scale voltage drop is the
setting
of the MULTIPLIER switch.
3-2
0962R
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