SSCC APPLICATIONS & PROGRAMMING GUIDELINES
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4-3
SIG-00-22-02 JUNE 2022 (Revised September 2022)
Version: B.1
Figure 4-2 Pulse Width Modulation - Examples
NOTE
The regulated lamp drive is a pulse-width modulated voltage with an AC
component and a DC component.
A True RMS AC+DC meter is required to accurately read the pulse-
modulated lamp voltage, e.g., Agilent U1252A
Conventional multimeters may be used; however, the voltage reading will
vary from the true rms value.
The variance is not a set percentage and is dependent on battery
voltage.
4.2.3 Module Health
The A80405 module provides an output that controls the HEALTH LED on the module front
panel.
•
Yellow HEALTH LED reflects the health of the module:
•
Flashes at 1 Hz rate when module fully operational.
•
Flashes at 2 Hz rate when module not communicating with CPU module.
•
Flashes at 8 Hz rate when a fault is detected within the module.
Example 1
Example 2
15 Volts
12 Volts
66
83