SMAR LD292, Руководство по эксплуатации, техническому обслуживанию и инструкциям

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Operation
2.3
Power Supply
Takes power of the loop-line to power the transmitter circuitry.
Power Isolation
Isolates the signals to and from the input section, the power to the input section must be isolated.
Display Controller
Receives data from the CPU identifying which segments on the liquid crystal Display use to turn on.
The controller drives the backplane and the segment control signals.
Local Adjustment
There are two switches that are magnetically activated. They can be activated by the magnetic tool
without mechanical or electrical contact.
Display
The integral indicator is able to display one or two variables, which are user selectable. When two
variables are chosen, the display will alternate between the two with an interval of 3 seconds.
The liquid crystal display includes a field with 4 ½ numeric digits, a field with 5 alphanumeric digits
and an information field, as shown on Figure 2.3.
Figure 2.3 - LCD Indicator