Cisco Cisco OptoStar II Driver Amplifier Guida All'Installazione
Starting up the Module
Initialization
When the OptoStar II forward receiver module is powered on, the module will
perform a self-test.
Follow these steps to perform the self-test:
1. Turn the front panel switch of the OptoStar II power supply module to ON
perform a self-test.
Follow these steps to perform the self-test:
1. Turn the front panel switch of the OptoStar II power supply module to ON
position.
2. When the forward receiver module starts up, it will perform a booting
initialization for about 5 seconds.
3. During the initialization, the power LED and the alarm LED on the front
panel will be illuminated, and the communication status is shut off.
4. Once the initialization is completed, the status indicator will return to normal.
Communication is enabled and the module is operational.
CAUTION:
•
The module must be initialized; any equipment that cannot be initialized must
be returned to the manufacturer for repair.
be returned to the manufacturer for repair.
•
When everything becomes stable, the module still needs to warm up for at least
one hour, to make sure that its performance is normal.
one hour, to make sure that its performance is normal.
Signal Inspection
•
Use a power meter to measure if the optical input power is within the
specifications. The range of input power and AGC is - 3. 0 dBm ~ + 3. 0 dBm. If
the optical input power is out of the range, the module performance will be
degraded. Make sure the mating surface is clean when doing the measurement.
specifications. The range of input power and AGC is - 3. 0 dBm ~ + 3. 0 dBm. If
the optical input power is out of the range, the module performance will be
degraded. Make sure the mating surface is clean when doing the measurement.
•
Use a DB meter or spectrum analyzer to measure the output level at the RF
output port on the rear panel of the module, to ensure the appropriate RF level
into the next transmitter module, amplifier module or distributor.
1. When the module is in AGC (automatic gain control) mode, RF output level
is 35 dBmV/channel, 1310nm forward optical transmitter, OMI = 3. 2%
(1550nm forward optical transmitter OMI = 3. 0%).
2. When the module is in MGC (manual gain control) mode, attenuation is 0 dB,
optical input power is -3 dBm, RF signal output level is 35 dBmV/channel,
1310nm forward optical transmitter, OMI = 3. 2% (1550nm forward optical
transmitter OMI = 3. 0%). With the same OMI and MGC settings, when the
optical input power of the receiver is increased/decreased by 1 dB, the RF
output level is accordingly increased/decreased by 2dBm. For example, when
the optical input power is -2 dBm, the output level is 37 dBmV.
output port on the rear panel of the module, to ensure the appropriate RF level
into the next transmitter module, amplifier module or distributor.
1. When the module is in AGC (automatic gain control) mode, RF output level
is 35 dBmV/channel, 1310nm forward optical transmitter, OMI = 3. 2%
(1550nm forward optical transmitter OMI = 3. 0%).
2. When the module is in MGC (manual gain control) mode, attenuation is 0 dB,
optical input power is -3 dBm, RF signal output level is 35 dBmV/channel,
1310nm forward optical transmitter, OMI = 3. 2% (1550nm forward optical
transmitter OMI = 3. 0%). With the same OMI and MGC settings, when the
optical input power of the receiver is increased/decreased by 1 dB, the RF
output level is accordingly increased/decreased by 2dBm. For example, when
the optical input power is -2 dBm, the output level is 37 dBmV.
•
A DB meter or spectrum analyzer can be used to measure the RF output level
via the test point on the front panel. The actual value of the output level is 20
dB higher than the measured value.
via the test point on the front panel. The actual value of the output level is 20
dB higher than the measured value.
3-2
Operation
OL-29662-03