RAW ANALOG DATA
The ADC-4U11 will present the raw analog data as a
number between 0 and 2047* when in 11 bit single
ended mode and a number between -2048 and
+2047 when in 12 bit differential mode.
*the usable range with the ADC-4U11 reference
voltage set to 6.144 will be 0 to 1665 in 11 bit single
ended mode and -1666 to +1665 in differential mode
since the portion of the ranges from (5 volts to 6.144)
and from (-6.144 to -5 volts) are not usable.
HIGH PRECISION
INSTRUMENT AMP
The built-in high precision instrument amplifier utilizes
6 predefined precision voltage references that have
been selected to provide an exact voltage
measurement per increment as follows:
256 mv
.125 mv increments (8 per mv)
512 mv
.25 mv increments (4 per mv)
1.024 v
.5 mv increments (2 per mv)
2.048 v
1 mv increments (1 per mv)
4.096 v
2 mv increments (1 per 2 mv)
6.144 v
3 mv increments (1 per 3 mv)
DIFFERENTIAL INPUT IMPEDANCE
at 6.144 volts:
22 Meg ohm
at 4.096 volts:
15 Meg ohm
at 2.048 volts:
4.9 Meg ohm
at 1.024 volts:
2.4 Meg ohm
at 512 mv:
710 Kilo ohm
at 256 mv:
710 Kilo ohm
NOTE:
Once a change is made, the Apply Button will
appear. Changes will not be applied until you click the
Apply button. The changes are saved to the
ADC-4U11.ini file.
Relay and Input labels may be changed by clicking the Relay Control or Input Setup buttons. Click the Analog Setup
button to make changes to the analog labels, suffix, scale, offset or precision. These also apply to logged data.
The voltage input range may be set by selecting 1 of the 6 possible gain levels using the built in instrument amp.
Start the data logger by checking the Enable box. The logger will roll-over or stop based on the setting in the Max
Entries box. The Data Interval may be set to minutes or seconds and will log the data based on the setting in the box.
Click the Com Port button to refresh the available Com Ports. Enter or use the pull-down arrow to set the Com Port.
The Sample Rate is the interval between samples (in the example above, the setting is 100 milliseconds or 10
samples per second).
Check the Start Minimized box to start the ADC-4U11 device driver in "driver only" mode. Blue 4 icon will show in your
system tray.
Page 12
ELECTRONIC ENERGY CONTROL, INC.
14960 Maple Ridge Rd
Milford Center OH 43045-9016
USA
(937) 349-6000
(800) 842-7714
(937) 349-6000
[email protected]
http://www.eeci.com
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