Paradise RA 5785 User Manual download pdf (Page 30)

30 208143 REV - Operations Manual, HPA3, Mini Compact Outdoor SSPA

3.3.1.2 Fault Status Indicators

The Fault Status frame in the lower left side of the Status Window contains a grid of SSPA

fault indicators. See Figure 3-9, Item [2]. A green indicator signifies proper operation; red

signifies a fault condition.

Summary Alarm: The Summary Alarm is simply a logical ‘OR’ of any of the alarm indicators.

Unit Online: The Unit Online indicator is relevant in redundant systems. If the unit is clear of

faults and active, the indicator will be green. If the unit is offline or in standby mode, the

indicator will be red.

External Mute Alarm: The External (Ext) Mute line gives an indication via the M&C screen

that the SSPA has been externally muted by J4-Pin B. This external mute alarm can be

configured to trigger a summary alarm if desired. The factory default is to signal a External

Mute fault but no Summary Alarm.

Auxiliary & Spare Alarms: The Auxiliary and Spare Alarms are configurable from the

Settings Window. See Section 3.3.2.

Forward RF Fault: The Forward RF Fault Alarm is configurable from the Settings Window.

See Section 3.3.2.

High Temperature Alarm: The Temperature Fault indicator is factory preset to alarm at

80°C. The amplifier will continue to operate up to 90°C. Beyond 90°C the DC power will be

interrupted to the SSPA module. This measure will protect the sensitive microwave transistors

from catastrophic failure. The fans and monitor and control circuitry will continue to operate

normally. This function has approximately a 5°C hysteresis window which will allow the

amplifier to re-enable itself when the ambient temperature is reduced by 5°C. The

Temperature Alarm is intended to warn the operator of possible fan problems and eventual

amplifier shutdown.

Low DC Current Alarm: The Current Fault is factory preset to alarm if the SSPA module

current falls below 60% of its nominal value.

Low DC Voltage Alarm: The Voltage Alarm is factory preset to alarm if the SSPA module

current falls below 80% of its nominal value.

BUC Alarm: The BUC fault is only active in units that are supplied with an optional L-Band

Block Up Converter module. If the Up Converter’s phase locked local oscillator loses lock, a

BUC alarm is set and the amplifier is muted so that spurious RF cannot be transmitted.

Fiber Alarm: The Fiber Alarm is configurable from the Settings Window. See Section 3.3.2.

RF Switch Alarms: The RF Switch 1 Alarm is only active if a 1:1 Redundant System has

been configured in the M&C program. The RF Switch 2 Alarm is only active is a 1:2

Redundant System has been configured. These configuration are covered in Section 7, the

Redundant System Concepts description.

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Paradise RA 5785 User Manual Page 30