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Chapter 3 Features and Functions
Indicators
3-6 User’s Guide
Indicators
Power Indicator
This indicator lights when the input power is supplied to the 58502A.
The indicator cannot be set or queried via the serial interface.
Alarm Indicator
This indicator lights when an alarm is detected in the distribution
system. Illumination of this indicator could mean that one or more
outputs are at fault, or an input signal is absent at both inputs A and
B, or the 58502A has received alarm signals from the external
precision frequency sources.
Input A and B Indicators
These indicators light when a sinusoidal input signal is present at
input A or B.
OUTPUT STATUS 1-12 Indicators
These indicators light when the associated outputs are functioning.
SYSTEM STATUS
Power Alarm Input
A
Input
B
OUTPUT STATUS
1 2 3456 7 8 9 10 11 12