Service manual

13 – 6
Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9
Analog Outputs
The Analog output card of the Vission 20/20 generates
a 4 – 20mA signal to any attached devices. However,
it is not uncommon that small difference in the board
components might result in small difference in the out-
put. So this screen offers the operator the ability to fi ne
tune the upper and lower output values, see Figure 13-6.
Instruments Calibration Screen - Analog Outputs (Page
6).
Test Limits:
• By pressing either the Test Min or Test Max buttons,
the output will go to either 4ma or 20 ma. The opera-
tor can then measure the output for accuracy.
Min (mA):
• If the 4ma output has an unacceptable amount of
error. The operator can use the “+” & “-” buttons to
adjust the output.
Max (mA):
• If the 20ma output has an unacceptable amount of
error. The operator can use the “+” & “-” buttons to
adjust the output
Figure 13-6. Instruments Calibration Screen - Analog Outputs (Page 6)
Section 13 • Instruments Calibration