User's Manual

MCPS2135 System MonitoringPlanning and PreparationIntroduction
26 MCPS2135 Operations Manual
2001 Spectrian Corporation. All rights reserved.
1.1.35.4.3 MCPA System Alarms
A multimodule MCPA system will have an Amplifier Management Module
(AMM) that summarizes the status of all modules and reports this information to
the base transceiver station (BTS). The format of this information is usually
customized for specific customers. Options for physical layer customization
include:
• Parallel TTL Interface – Summary bits for individual module status.
• Serial Interface (RS-232, RS-422) – Customized strings sent to BTS interface.
• Form-C Relay Contacts – Wired directly into BTS.
Messaging layer customization is usually specified by the customer. In addition
Spectrian does maintain an internal standard for serial messaging. System status is
generally a combination of the module status. This is also specified by the
customer. An example of a system alarm hierarchy might be as noted in the table
below.
MCPA Alarm
Condition
Amplifier System Status Summary Logic
Minor At least one module reporting a minor alarm OR
Major At least one module reporting a major alarm OR
Critical At least 3 modules reporting a critical alarm AND
Table 6: Typical MCPS System Alarm Hierarchy