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y
These terminals are used for the
n
voltmeter sense leads when mak-
ing 4-wire ohms
measurements.
Q SENSE
(a wine)
INPUT
(2 wire)
MAX
SA/250V
FUSE
ee
Additional
Feature
Keys
Autozero is a function that allows
you to enable or disable the inter-
nal zero-correction circuitry. Turn-
ing
Autozero
off
increases
the
reading rate with a trade-off
of
long term stability.
Sac)
Pressing
the
Single Trigger key
trig | causes the 3468A to take one
reading and wait for the next trig-
ger. Note the S TRG annunciator
in the display.
Test/Reset performs an internal self
test then resets the 3468A to its
turn-on state. Any errors in the
self test are noted in the display.
Input
These
are
the
voltmeter
and
2-wire ohms
input terminals.
A
__-This is the Amps input terminal
and is used with the INPUT LOW
terminal. (3 Amp fuse protected)
The
front
panel
SRO
(Service
Re-
quest)
key is an HP-IL operation
that enables you to manually
in-
terrupt the controller. This key is
enabled by setting the SRO mask.
The
3468A
HP-IL Address
is
displayed in response to the Ad-
dress key.
Another
HP-IL
operation,
Local
returns the 3468A
to front panel
control from the REMOTE
mode.
The
3468A
features
total elec-
tronic calibration.
The Cal key is
used
as
part
of that
procedure.
See the 3468A
Service Manual,
-hp- part number 03468-90001.
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