Operating Modes; Agc Modes; Mgc Modes; Quick-Swap Module Configuration - Motorola GX2 EA1000C Series User Manual

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Overview

Operating Modes

The user can select one of several operating modes depending on the application. The

modes are characterized as either Automatic Gain Control (AGC) or Manual Gain Control

(MGC):

Each of the following modes uses the AGC function of the module. The specific mode

determines the laser drive level relative to the factory-set reference point:

•

Preset — initiates AGC using factory settings for optimal laser performance.

•

Set — enables the user to adjust the AGC reference point for specific product

applications or performance requirements.

•

Set Equate — places the transmitter in Set mode with the same laser drive level as

Preset. This is useful in resetting the Set mode operating point to a known level.

•

CW/Video — this is a variable back-off from the level used to proof the system. This

mode is not a separate mode from Preset or Set but is used in conjunction with

these modes.

In Manual mode, the attenuator setting is controlled directly and changes the laser drive

level.

•

Manual — MGC is a fixed gain that is adjusted by the user.

•

Manual Equate — places the module in Manual mode with the attenuator setting

remaining the same as the previous mode. After setting the Preset mode, you can

use manual equate to find the optimum laser drive level before you switch to Manual

mode.

Mode settings are stored in NVM. When powering up, a module reverts to the last

operating mode settings.

The quick-swap module configuration saves operators time when replacing application

modules. When selected, the system saves all previous settings for a module and then

automatically downloads those settings to a new module of the same type when it is

installed in the same housing slot. This feature works in conjunction with the

GX2-CM100B module.

Detailed information regarding operating the GX2-EA1000C*/* is provided in Section 4,

"Operation."

GX2 EA1000C*/* Multi-Wavelength DWDM 1550 nm Laser Transmitter • User Guide

589569-001-a

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