adc-44d ETC-unknow, adc-44d Datasheet - Page 23

• Manufacturer Part Number: adc-44d
• Description: Multi-function Analogue Input/output Card
• Manufacturer: ETC-unknow

Chapter 4
Input Scaling
The ADC-44d gain can be selected by software and by the use of a link. The
link selects x1 or x½ ranges. The programmable gains may be set to x1, x2,
x10, x100. In combination these provide the capability to measure the
following full scale input voltages:-
The selection of a particular gain will depend upon the application for which
the card is being used. When using the 50mV full scale input, special care
should be exercised in shielding input cables against spurious noise and the use
of a differential input configuration is recommended.
Note that the computer is not aware of the setting of the link. If this is set to
x½, the actual input to the ADC is half that applied to the card input. It is this
voltage that the ADC indicates not the input voltage. The user must multiply
the output value by 2 to get the true input voltage.
Blue Chip Technology Ltd.
10 Volts, 5 Volts, 2.5 Volts,
500 mV, 100 mV and 50 mV.
I/O Connections
01270170.doc
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