Under the "standard configuration," your 4077 is initially set for a full-
scale transducer range of 3.00 mV/V. If your transducer's full scale is
1.5 mV/V, you need only enter the following RANGE (RNG) command
to set the 4077 accordingly:
RNG 1 = 1.5M [CR]
To reset the 4077 to the 3 mV/V range, command
RNG 1 = 3M [CR]
Note that entry of either of the above commands automatically sets all
three 4077 analog channels (Nos. 1, 2, and 3) to the same specified
input range.
Under the "standard configuration," your 4077 is initially set for a
nominal excitation level of 10 V-DC (i.e., ± 5 V-DC). You can select a
level of 5 V-DC (i.e., ± 2.5 V-DC) by entering an EXCITATION (EXC)
command of
EXC = 5 [CR]
To reset the 4077 to the 10-V level, command
EXC = 10 [CR]
Using low excitation helps reduce gage heating effects in
stress
analysis
of materials with low thermal conductivity.
IF YOU NEED TO RESET THE 4077's INPUT RANGE
AND/OR EXCITATION LEVEL, IT SHOULD BE DONE
BEFORE THE TRANSDUCER IS CONNECTED.
Modifying Input Range & Excitation Level App. D
D.1
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