Harmonic PWRLink II 4800T Series, Руководство по эксплуатации продукта, Страница: 27 / 43

Setup via NETWatch Site Controller
PWRLink II 4800T Optical Transmitter Product Manual Rev A (2/02) 4–9
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,
Factory Setup , on page 4-2, regardless of the
actual RF input level. For the best performance, you must adjust the input
level to 16 dBmV per channel. For instructions, see Section
4.4.2 Fine
Tuning the Transmitter on page 4-8.
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 PWRLink II transmitter through the
NETWatch Site Controller element management system, consult the
NETWatch Site Controller Instruction Manual.
To use NETWatch Site Controller to set up the PWRLink II transmitter:
1. Verify that the PWRLink II transmitter module is properly installed in the
HLP 4200 platform. Instructions are provided in Section 2.2 Installing the
Transmitter Module on page 2-1.
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. Select automatic gain control (AGC) mode of operation.
4. Set the RF input level to the value given in Table 4-1,
Factory Setup , on
page 4-2.
5. Select manual gain control (MGC) mode of operation.
4.6 Setup via the Transmitter’s Front Panel Controls
This section provides instructions for setting up the PWRLink II transmitter
via the RF adjustment control on the front panel of the transmitter module.
Use this interface only when the first two setup options, described in Section
4.4 and Section 4.5, are not available.
NOTE: For initial setup of the transmitter, Harmonic recommends that you
use the HLP 4200WD platform display interface, if available, and
that you follow the setup procedure in Section 4.4
If you are using an equipment platform that has been configured without a
display (such as HLP 4200ND) and NETWatch Site Controller is not available,
follow the procedure below to set up the PWL 4800T series transmitter
module:
1. Verify that the transmitter module is properly installed in the platform.
See Section 2.2 Installing the Transmitter Module on page 2-1.
2. Verify that the RF input level to the transmitter is in the 16 to 22 dBmV
range.