Ectron 451, Instruction Manual

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•
+, OPR (operate),
−
switch used in conjunc-
tion with the CHANNEL SELECT switch
to perform shunt calibration.
•
MONITOR CHANNEL switch with posi-
tions of 1 through 22 plus OFF, used to con-
nect the monitor meter and the OUTPUT
MONITOR jack to the output signal and ex-
citation of any selected channel.
•
Digital VOLTAGE-ADJUST switch for the
voltage calibrator with a range from 0.00 V
to 5.00 V.
•
Calibrator polarity switch.
•
Output calibration switch with positions of
CALibrator and OPR (operate).
•
MONITOR METER switch with positions
of 0.1 V, 1.0 V, 10 V, OFF, EXCIT, AND
CAL.
•
Indicator meter.
•
Plug-in bridge-completion cards (22) con-
taining terminals for the completion and
shunt-calibration resistors.
•
All-channel autozero switch, locking in the
off position and momentary in the ALL-
AUTOZERO position.
•
1
⁄
4
,
1
⁄
2
, and FULL bridge-completion switch
located above each channel.
•
Available Accessories
•
Line Power Supplies
•
Two power supplies are available to operate
the 4000 Series Enclosures from the ac power
line, the Model 4528 for 28 V dc enclosures
and the Model 4512 for 12 V dc enclosures.
Mating connectors Mating connectors for each enclosure connector are sup-
plied unless specified otherwise.
Model E408-6
The Model E408-6 enclosure is a six-channel bench-top unit, which will hold Models 352,
418, 428, 441A, and 451 in any combination. Being small, lightweight, and powered either
by ac or dc, the enclosure is well suited for use in the field as well as the laboratory.
Model T418 is not accommodated without modification to the enclosure.
Operation Model 451
3-16