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b. Read the frequency signal at the receiving device and compare it to the
transmitter output.
c. Choose End.
3. Test the discrete output(s).
a. Press Service Tools > Simulate > Simulate Outputs > Discrete Output Test.
b. Choose Off.
c. Verify the signal at the receiving device.
d. Press OK.
e. Choose On.
f. Verify the signal at the receiving device.
g. Press OK.
h. Choose End.
Postrequisites
• If the mA output reading at the receiving device was slightly inaccurate, you can
correct this discrepancy by trimming the output.
• If the mA output reading at the receiving device was significantly inaccurate, or if at
any step the reading was faulty, verify the wiring between the transmitter and the
remote device, and try again.
• If the discrete output reading is reversed, check the setting of Discrete Output Polarity.
10.13 Trim mA outputs
Trimming an mA output calibrates the transmitter's mA output to the receiving device. If
the current trim values are inaccurate, the transmitter will under-compensate or over-
compensate the output.
10.13.1 Trim mA outputs using ProLink II
Trimming the mA output establishes a common measurement range between the
transmitter and the device that receives the mA output.
Important
You must trim the output at both ends (4 mA and 20 mA) to ensure that it is compensated
accurately across the entire output range.
Prerequisites
Ensure that the mA output is wired to the receiving device that will be used in production.
Procedure
1. Choose ProLink > Calibration > Milliamp 1 Trim or ProLink > Calibration > Milliamp 2 Trim.
Troubleshooting
Configuration and Use Manual 201