Dataq DI-725/E, User Manual

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DI–720/DI–722/DI–730 Series User Manual
Calibration Verification
32
Or if you are using the alternative voltage calibrator, the following figure illustrates the necessary connections:
D/A Calibration (DI-720 Series Only)
D/A calibration involves adjusting the analog outputs to the correct full-scale range using the analog data value. The
following figure illustrates the necessary connections:
When the above circuit is connected, the calibration program can be initiated by typing “DI720CAL” at the DOS
prompt. D/A calibration is accomplished by following the on screen prompts.
DI-720 Series Instruments And
16 DI-730 General-Purpose Channels
DI-722 and DI-730 Series 8 Wide-Range Channels (accessi-
ble from the front panel). Channels should be measured in
isolation and not in groups with the shortest lead possible.
DI-720 Series Instruments
16 DI-730 General-Purpose Channels
DI-722 and DI-730 Series 8 Wide-Range Channels (accessible
from the front panel). Channels should be measured in isola-
tion and not in groups with the shortest lead possible.
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
CH9
CH30
CH31
CH32
S.GND
(signal ground)
Voltage
Source
+
+
-
-
DVM
DVM
Voltage
Source
+ + - -
CH1 CH2 CH3 CH8
+ + + +
- - - -
+
-
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
CH9
CH30
CH31
CH32
S.GND
(signal ground)
Voltage
Calibrator
Voltage
Calibrator
+ -
CH1 CH2 CH3 CH8
+ + + +
- - - -
+
-
DVM
DAC1/DAC2
SGND
(signal ground)