SYSTEM STATUS

Power Alarm Input

Input

A

B

Chapter 3 Features and Functions

IndicatorsIndicatorsPower Indicator

This indicator lights when the input power is supplied to the 58502A. The indicator cannot be set or queried via the serial interface.

OUTPUT STATUS

1

2

3

4

5

6

7

8

9

10

11

12

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.

3-6

User’s Guide