Vaisala DRYCAP DMT345 Guide de l'utilisateur Page 110

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Vue de la page 109
USER'S GUIDE____________________________________________________________________
110 _________________________________________________________________ M210762EN-D
Analog Output Tests
Use the display/keypad for testing to test the operation of the analog by
forcing the outputs to known values. Measure then the values with a
current/voltage meter.
Use the display/keypad for testing.
1. Open the MAIN MENU by pressing any of the ▲▼◄► arrow
buttons.
2. Select System by pressing the arrow button.
3. Select Diagnostics by pressing the arrow button.
4. Select Analog output tests by pressing the arrow button.
5. Select one of the testing options Force 0 %/50%/100% of scale.
Press TEST to confirm your selection. All outputs are tested
simultaneously. The actual output value depends on the selected
range.
6. Press OK to stop testing. Press EXIT to return to the basic display.
ITEST
Use the serial line to test the operation of the analog outputs. Use the
command ITEST [aa.aaa bb.bbb] to force the analog outputs to entered
values. The set values remain valid until you issue the command ITEST
without parameters or reset the transmitter.
Syntax: ITEST [aa.aaa bb.bbb]
where
aa.aaa
= Current or voltage value to be set for channel 1 (mA or V)
bb.bbb
= Current or voltage value to be set for channel 2 (mA or V)
Example:
>itest 20
Ch1 (Tdf ) : * 20.000 mA H'CCD3
Ch2 (x ) : * 20.000 mA H'CCCB
>itest 20 5
Ch1 (Tdf ) : * 20.000 mA H'CCD3
Ch2 (x ) : * 5.000 mA H'34BD
>
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