Harmonic SUPRALink 7110-E Series, Руководство по установке, Страница: 26 / 38

Chapter 4 Transmitter Setup Setup via NETWatch Site Controller
© 2009 Harmonic Inc. 26 SPL 7110- Exx, Version 1.0, Rev A
4. Press
▲
or
▼
until the display reads
ADJUST RF LEVEL
, then press
Enter.
The current RF
pad setting is displayed with the instruction
<SET+UP/DN> TO CHANGE
.
5. Hold down the
Set
button and press
▲
or
▼
until the RF pad value you want is displayed,
then press
Enter
.
6. To exit RF adjustment, press
Enter
.
4.4.4 Resetting the Transmitter to Factory Defaults
The factory-optimized settings are described in Section 4.1 Factory-Optimized Settings on
page 21.
To return the transmitter to factory settings:
1. On the HLP, press the
▲
or
▼
button until the display reads
MODULE SELECTION
, then
press
Enter.
2. Press
▲
or
▼
until the display indicates the transmitter module you wish to reset, then
press
Enter.
3. Press
▲
or
▼
until the display reads
TRANSMITTER ADJUSTMENTS
, then press
Enter.
4. Press
▲
or
▼
until the display reads
SWITCH TO FACTORY SETTINGS
,
then press
Enter.
5. A message appears, telling you that all settings will be changed. Press
Enter.
6. A message appears,
<ESC> TO ABORT OR <SET+UP/DN> TO SWITCH.
Hold down the
Set
button and press
▲
or
▼
, then press
Enter.
7. A confirmation message appears. Press
Enter.
The transmitter reverts to the factory-optimized settings:
■
If the transmitter is in AGC mode, the internal RF pad level adjusts to get the adequate
drive level to the laser for optimized performance.
■
If the transmitter is in MGC mode, the transmitter reverts to factory settings based on
Table 4-1 on page 21, regardless of the actual RF input level. For the best performance,
you must adjust the input level to 15 dBmV per channel. For instructions, see Section
4.4.3 Fine-Tuning the Transmitter on page 25.
4.5 Setup via NETWatch Site Controller
If you are using a platform that does not have a display (such as the HLP 4200ND), you can
use NETWatch Site Controller for transmitter setup. For details on communication with the
SPL 7110- Exx through the NETWatch Site Controller element management system, consult
the
NETWatch Site Controller Instruction Manual.
To use NETWatch Site Controller to set up the SPL 7110- Exx:
1. Verify that the SPL 7110- Exx module is properly installed in the HLP 4200 platform.
Instructions are provided in Section
2.2 Installing the Transmitter Module on page 13.
2. Verify that the platform is powered on and that no alarm conditions exist within the
transmitter module; make sure that the module icon in the NETWatch display is green.
3. Set the RF input level to the value given in Table 4-1 on page 21.
4. Select manual gain control (MGC) mode of operation or AGC.
5. Set the chirp compensation level by changing the fiber length setting to the value closest
to the total fiber length traversed by the light from this transmitter.
6. If further adjustment is needed, change the input pad level via the NETWatch Site
Controller.