M4000 Insulation Analyzer User Guide
72A-1230 Rev. F 1-5
July 22, 2005
M4200c Controller
Figure 1.3 M4200c Controller
• The M4200c Controller is the interface between the operator and the
M4000 Insulation Analyzer. The color display, control, data storage,
printing and communication functions are all provided by the M4200c
Controller. This component is covered in detail in a separate manual.
• The M4200c has been specifically designed and built to operate in
outdoor substations and other environments hostile to electronic test
equipment. The unit has been hardened to electrostatic discharge
(ESD) and radio frequency interference (RFI) to reduce or eliminate
their effects on internal electronic circuits.
• The outer case of the M4200c is made of ABS plastic over an
aluminum chassis that makes it rugged and suitable for transporting to
remote sites.
• The display is a six-inch by eight-inch color transflective liquid crystal
display (LCD) that runs in the VGA mode. The display has high
contrast in bright sunlight, and has backlight control for low ambient
light conditions. An LCD heater is installed to allow for use in cold
weather. An external monitor may be used in place of the LCD screen.
Access to the external display connector is found behind the access
door on the left side of the M4200c Controller.
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