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Procedure
1. Test the mA output(s).
a. Choose Service Tools > Simulate > Simulate Outputs > mA Output 1 Loop Test or Service
Tools > Maintenance > Simulate Outputs > mA Output 2 Loop Test, and select 4 mA.
b. Read the mA current at the receiving device and compare it to the transmitter
output.
The readings do not need to match exactly. If the values are slightly different,
you can correct the discrepancy by trimming the output.
c. Press OK.
d. Select 20 mA.
e. Read the mA current at the receiving device and compare it to the transmitter
output.
The readings do not need to match exactly. If the values are slightly different,
you can correct the discrepancy by trimming the output.
f. Press OK.
g. Choose End.
2. 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.
3. Test the TPS output.
a. Attach a frequency counter, oscilloscope, digital multimeter (DMM), or digital
voltmeter (DVM) to the TPS output loop.
b. Compare the reading to the Sensor Time Period process variable at your meter.
Postrequisites
• If the mA output readings are within 200 microamps of each other, you can correct
this discrepancy by trimming the output.
• If the discrepancy between the mA output readings is greater than 200 microamps,
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 readings are reversed, check the setting of Discrete Output
Polarity.
Troubleshooting
Configuration and Use Manual 165