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Table Of Contents

System Integration Manual
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        Radio Frequency Front End Multi-Carrier Power Amplifier System
  - March 2001
    - Powerwave Technologies, Inc. Tel: (714) 466-1000
- 1801 E. St Andrew Place Fax: (714) 466-5800

DRAFT RF Front End System Integration Manual

044-05082 Rev. A

3-2

March 2001

3-2.4 MHUI Cable-Normaliztion-Attenuators Settings/Cable-Normalization-Mode Selection

Buttons

The MHUI cable normalization attenuator setting is performed either manually or by remote con-

trol or by an automatic control algorithm. This is indicated by one of three LEDs illuminated.

At the front of the MHUI a push-button switch is used to enable the manual setting of the cable

loss normalization attenuators, which are adjusted together with the same push-button switch as

used for manual cell size adjustment.

At the front of the MHUI a push-button switch is used, which enables the automatic control algo-

rithm for cable normalization. If the cable normalization attenuator is being controlled by remote

and if there is any manual adjustment via the front-panel or a manual switch to the automatic

control algorithm, then the mode will be manual or automatic control until a new RS485 command

is received.

If the mode is manual and if the front-panel push-button switch for automatic control is pressed,

the new mode will be automatic control. If the mode is automatic control and if the front-panel

push button for manual adjustment is pressed, the new mode will be manual.

3-2.5 MHUI Alarm Indicators

Front-panel LED’s at the MHUI front-panel will show the alarms of MHU and MHUI. All of these

alarms can be interrogated via RS-485. There are three types of alarms indicated by contact clo-

sures; Minor, Major, and Critical

The alarm types are identified by their associated LED color. They are:

• Minor Alarm (Yellow)

• Major Alarm ( Flashing Red)

• Critical Alarm (Solid Red)

The following table identifies the alarm number and its related function.

Table 3-1 Alarms and Related Function

Alarm Function

• High temperature condition at the MHU

• Fan fail at MHU

• Over-temperature shutdown at MHU

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• Over RF power shutdown

• High VSWR shutdown at antenna port of MHU

• Partial fail of one MCPA in MHU

• Total fail of one MCPA in MHU

• Total Fail of both MCPA in MHU

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• No TX input signal at MHUI

• No TX input signal at MHU

• Microprocessor in MHU not working

• Microprocessor in MHUI not working

• Loss of communication between MHUI and MHU

• Partial power supply failure at MHU

• Partial fail of LNA in MHU

• Total fail of LNA in MHU