If this procedure is to be performed, it is important that the transmitter output be measured with a very accurate ammeter. We will use the Fluke 8060A to measure the current output ... however, a more accurate meter should be used!
Prior to performing this calibration, record the current as indicated by the Fluke at 4 mA, 8 mA, 12 mA, 16 mA and 20 mA. Record your observations in table 3. Perform this test by going to the main menu panel, then select option K, “TEST”, then select K10, “OUTPUT %”. Again, refer to the communication block diagram and parameter summary on pages 23 to 26 of the YT200 manual.