ASTRO-MED Dash 8X Manual de início rápido - Página 14

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Engineering units provide the capability to display user-selected units instead of voltage. All signal information enters the
Dash 8Xe / Dash 8X as voltage. However, converting the voltage unit to an alternative unit of measure may be desirable
in applications that measure current, pressure, strain, or any non-voltage unit.
This allows the Dash 8Xe / Dash 8X to be compatible with transducers and probes that can provide a voltage output to
the Dash 8Xe / Dash 8X. The relationship between the voltage and the engineering unit is assumed to be linear,
characterized by a slope and offset (y = mx + b).
The following is an example of entering engineering units into the Dash 8Xe / Dash 8X. For this example, we will assume
we are entering the engineering units for a current probe that provides a 10mV/A voltage output to the Dash 8Xe / Dash
8X.
Dash 8Xe / Dash 8X Amplifier Channel Settings (Analog Channel Setup) Window
ACTION
Set the engineering
units on Channel #1 to
be 10mV/A
Open User Units Menu
Enable User Units
Enter User Unit
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HOW TO
(Use the Menu Bar Pull-Down menus)
Choose Setup >> Amplifier Channel Settings (Analog Channel Setup) from the menu bar.
The Amplifier Channel Settings (Analog Channel Setup) menu will appear.
Highlight Waveform 1.
On the Amplifier Channel Settings (Analog Channel Setup)
window, Choose Units >> Enter User Units, the User Unit Setup –
Waveform 1 window will appear.
Select the Enable User Units icon located in the top center of the
User Unit Setup – Waveform 1 window. The Enable User Units
icon should be checked.
Select the Engineering Units box under the Enable User Units
icon. A keypad will appear. Erase the unit Volts and enter AMPS.
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Continued...
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