2. Test the Frequency Output(s).
a. Choose Device Tools > Diagnostics > Testing > Frequency Output Test.
b. Enter the Frequency Output value in Fix to.
c. Click Fix FO.
d. Read the frequency signal at the receiving device and compare it to the
transmitter output.
e. Click UnFix FO.
3. Test the Discrete Output(s).
a. Choose Device Tools > Diagnostics > Testing > Discrete Output Test.
b. Set Fix To: to ON.
c. Verify the signal at the receiving device.
d. Set Fix To: to OFF.
e. Verify the signal at the receiving device.
f. Click UnFix.
Postrequisites
• If the mA Output readings are within 20 microamps of the expected values, you can
correct this discrepancy by trimming the output.
• If the discrepancy between the mA Output readings is greater than 20 microamps,
or if at any step the reading was faulty, verify the wiring between the transmitter
and the remote device, and try again.
10.12.2
Perform loop tests using the Field Communicator
Prerequisites
Before performing a loop test, configure the channels for the transmitter inputs and
outputs that will be used in your application.
Follow appropriate procedures to ensure that loop testing will not interfere with existing
measurement and control loops.
Procedure
1. Test the mA Output(s).
a. Choose Service Tools > Simulate > Simulate Outputs > mA Output 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.
Troubleshooting
140 Micro Motion Model 1500 Transmitters with Analog Outputs
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