Under the "standard" configuration, the 4077's Channel 19 is an analog
output that corresponds to the "LIVE" INPUT WITH TARE (Channel 5)
with a full range of ±10 V-DC and a maximum resolution of ±1 mV. This
output is initially scaled for
1 mV of output per count for the current
reading of Channel 5
.
It can be rescaled by entering a new value for the scaling factor "m" of
the ANALOG OUTPUT (ANO) expression that defines Channel 19:
ANO 19 = m(CHN5) + 0 [CR]
An appropriate "m" can be determined by dividing the desired full-scale
analog output range in
millivolts
(up to the allowable maximum of 10000
mV) by the actual force reading (in lbs, kg, ft-lbs, etc.) which you want
the full-scale output to represent. The "m" value should reflect the
precision that currently applies to Channel 5 (this is initially the nearest
integral unit
).
For example, if you want a reading of 500 lbs to output the full +10000
mV, you need only enter a command of
ANO19 = 20(CHN5) + 0 [CR]
since (10000/500) = 20. If, however, you want 500 lbs to produce an
output of +5000 mV, you would enter
ANO19 = 10(CHN5) + 0 [CR]
since (5000/500) = 10.
Fig. 10 shows how an
external device connects to
the two-terminal Analog
Output Connector on the rear
of the 4077. The output is
single-ended, and returns to
"SIGNAL COMMON" (this is
the negative Analog Output
terminal).
2.j Analog Output Connections
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