Ectron 451, Instruction Manual

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of the plug-in conditioner-amplifiers assure
high accuracy data despite severe environ-
ments.
•
The ability to operate from unregulated 12-
or 28-V-dc power simplifies the logistics of
on-board testing of vehicles and aircraft.
•
An all-autozero switch which will initiate a
zeroing sequence in all Model 428 (and 418)
conditioner-amplifiers equipped with Op-
tion O.
•
Modifications to the 4000 Series Enclosures
can be designed to satisfy specific application
requirements. If so ordered, these changes
are described in an addendum inserted at the
beginning of this instruction manual.
Summary of Controls, Ter-
minals, and Indicators
Model 4001
•
DC-OFF-AC switch with red indicator lamp.
Operation from the ac line requires the use
of an ac power supply.
•
CHANNEL selector switch with positions of
1 through 14 used to select the monitored
channel.
•
METER switch with positions labeled OFF,
EXCITATION 10 V, AMP OUT, 10 V, 1 V,
0.1 V.
•
Indicator meter.All-channel autozero switch,
locking in the off position and momentary
in the ALL AUTOZERO position.
•
Fourteen CALibrate switches with positions
of +, OPR (operate), and
−
.
•
Balance-limit- and optional bridge-comple-
tion-resistor terminals are located on the side
opposite the front panel.
•
Calibration-resistor binding posts.
Model 4005
•
DC-OFF-AC switch with red indicator lamp.
Operation from the ac line requires the use
of an ac power supply.
•
CHANNEL SELECT switch with positions
of 1 through 22 plus ALL.
Model 451 Operation
3-15