Viavi COSA-4055 User Manual page 18

Chapter 1 Optical Spectrum Measurement
Configuration
16
Fig. 6 Alarm parameters
Thresholds can then be set (using the direction keys or numeric keypad),
to global level or to the level of each channel:
Global alarms
Number of channels
Delta channel power
Composite power
1. Max. acceptable variation between max. power and min. power on all channels
2. Maximum composite power
Channel alarms
Max channel offset
Min channel power
Max channel power
Channel Number
Channel Value
4
Delta Offset
5
P Min
6
P Max
1. Wavelength drift. Selection of the alarm on the basis of the value of Delta Offset
2. The values are then defined in P Min
3. The values are then defined in P Max
4. Delta of frequency
5. Minimum power
6. Maximum power
MTS / T-BERD 5800 • COSA-4055 • User Manual 2016.01
Yes/No
1
"No" or threshold modifiable from
0.1 to 60 dB (for "No" set threshold to Min)
2
"No" or threshold modifiable from -59.9 dBm
to +20 dBm (for "No" set power to Min)
1
Yes/No
2
Yes/No
3
Yes/No
From «001» to the max. number of
channels.
Display of the wavelength of the channel
number selected
From 0 to 10 nm
From -55 dBm to P Max
From P Min to +10 dBm