Using Set Mode; Using Manual Mode; Using Preset Mode (With Agc Control In The Gx2-Ea1000C*/* And Each Node) - Motorola GX2 EA1000C Series User Manual

Operation

Using Set Mode

To implement an increased channel load using Set mode:
1. Operate the GX2-EA1000C*/* in Preset mode and apply the preferred initial channel
load.
2. Allocate time for the AGC to adjust the RF drive level to the laser.
3. Select Set Equate mode to equate the Preset mode OMI setting to Set mode.
4. Set equate is a momentary mode and the GX2-EA1000C*/* soon proceeds to Set
mode automatically. Based on the additional channel load required, you need to
adjust the OMI [based on the equation: 10 x log
OMI set point.
5. Perform the calculation and make the appropriate OMI offset adjustment in Set
mode to maintain the same per channel power to the laser as was applied with the
initial channel load.
6. The benefit of using Set mode for an increase in channel load is that you eliminate
the need to re-adjust levels to each fiber node in the field.
7. Apply the planned additional channel loading.

Using Manual Mode

To implement an increased channel load using Manual mode:
1. Operate the GX2-EA1000C*/* in Manual mode.
2. Apply the preferred initial channel load.
3. Adjust the RF attenuator setting to achieve the preferred performance.
4. Apply the additional channel load.
5. Manually adjust the RF attenuator to again achieve the preferred performance.
6. Manual mode does not compensate for incidental changes in the RF input signal
level and continuous monitoring and RF attenuator adjustments may be required.

Using Preset Mode (with AGC control in the GX2-EA1000C*/* and each node)

Implementation using Preset mode requires AGC control in the GX2-EA1000C*/* and in
each node.
To implement an increased channel load using Preset mode:
1. Operate the GX2-EA1000C*/* in Preset mode.
2. Install an AGC option in the systems' nodes to compensate for the expected
signal-level change within the dynamic range of the equipment. Allow for adequate
gain reserve at the optical node during installation.
3. Apply the preferred initial channel load.
GX2 EA1000C*/* Multi-Wavelength DWDM 1550 nm Laser Transmitter • User Guide
589569-001-a
(ratio of channels)] from the Preset
10
B
36