Ashcroft ATE-2 - Handheld Calibrator - Manual (Page 40)

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SECTION 15 h. PERCENT (%) ERROR FUNCTION
CONT.
Percent Error
Input channel…
Input range…
Output channel…
Output range…
Enter % Error Mode
Output refers to any output signal from the device under test.
Output channel refers to the channel on which the device under
test is sending its output signal. For example a pressure trans-
ducer with 0-10 VDC output would be connected to the HHC’s
External input, referring to the banana jacks labeled COM and
0-33 Vdc In.
Output range refers to the numeric range of the output of the
device under test. In the example above the range would be 0 to
10. Engineering units are determined by the channel on which
the output signal is transmitted.
There is no need to program parameters referring to modules
installed in the HHC as they are recognized by the base unit.
To set up the Percent Error Function the HHC must be prop-
erly connected to the device under test and have appropriate
Quick-Select modules installed.
If testing pressure transducers, a pressure source such as a
hand pump, regulated clean shop air or dry nitrogen is required
to apply pressure to the device under test and the HHC pressure
module.
Note: See section 14j for wiring diagrams.
If using the internal power supply be sure that it has been turned
on in the main MENU and “24v” is indicated on the display.
Note: If the device under test is a voltage or current output device,
the “mA/V” key must be used to activate current or voltage moni-
toring prior to programming the test parameters.
For the following procedure description assume that the device
under test is a pressure transducer measuring 10-110 psi with a
voltage output of 1-6 Vdc.
Programming set up for Percent Error function
Press MENU key
Use DOWN or UP ARROW to highlight Modes…
Press ENTER
Use DOWN or UP ARROW to highlight Percent error…
Press ENTER
Use DOWN or UP ARROW to highlight Input Channel…
Press ENTER
Use DOWN or UP ARROW to highlight “CH1” (Channel 1
Module) or “CH2” (CHANNEL 2 module) or “External Input…”
Press ENTER
HHC will go back to Percent Error MENU and advance to the next
programmable parameter...
Use DOWN or up ARROW to highlight “Input range…”
Press ENTER
HHC will display Input Range selection screen
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