7.1
7 CALIBRATION PROCEDURES
7.1 Introduction
This section covers the calibration procedures of the MML series load modules. The load
modules should be calibrated annually, or whenever some repairs are made. To calibrate a
load module, you must disconnect the load module from the mainframe, and open the
module’s cover for measurement and/or adjustment. Refer to subsection 7.9 for removing
load modules. Use a ribbon cable (P/N: 881-803-31) to connect the load module with the
mainframe for calibration. For model MML-80-120-601 and MML-500-20-601 two ribbon
cables are needed for connection. When removing a load module from the mainframe, you
must put a fan on the back of the module to dissipate heat.
Refer to figure 7-1, 7-2, 7-3 for CC, CR, CV calibration equipment setup.
For manual calibration, press LOAD to disable the load module input when you change
mode or range, and press this key again to enable. After calibration, turn off the power,
reassemble the load module, and replace the module into the mainframe.
Press A/B and STATIC/DYNA simultaneously and hold it for approximately 2 seconds to
enter into the calibration mode, you must follow the calibration sequence. In calibration
mode, press A/B or R/L to go to the previous calibration procedure, and press
STATIC/DYNA to go to the next procedure, and press LOAD to save data and go to the
next procedure. After calibration, you must turn off the power, and turn it on again to
initialize the calibration data.
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