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Chapter 5. FAULT INDICATION
This section describes fault indication and isolation methods for the KST-2000L system.
Routine maintenance for the system consists only of assuring air flow for cooling of the
units. A system fault is indicated in three ways:
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•
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5.1
Fault Indication
The KST-2000L converter unit has two external LED indicators as shown in Figure 2-1.
The TX ON indicator is green when illuminated, and the FAULT indicator is red.
When prime power is applied to the KST-2000L and the HPA is transmitting power, the
TX ON indicator is a steady green. The indicator flashes when prime power is applied but
the HPA is not transmitting. The FAULT indicator is a steady red when any fault is de-
tected by the internal M&C processor.
The REMOTE connector (J2) has pins assigned (see Chapter 2, for pin assignments) for
the contacts on two form C relays, one for the uplink and one for the downlink. Normally
open contacts close and normally closed contacts open when there is a fault in any part of
the uplink or downlink. Fault isolation requires the use of the remote M&C as described
in section 4.2.
An external LED
Form C relay contacts
The remote M&C control
AND ISOLATION
5–1
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