Motorola Starline SG 2000 - Page 76

5-12 Operation
SG 2000 Installation and Operation Manual
Optical input
level(dBm/mW)
TP Volts
(1 mW=1 V)
Output (dBmV)
77 channels
Output (dBmV)
110 channels
Comments
–2.0/0.6
0.6 21 19 Normal
–2.5/0.6
0.6 20 18 Normal
–3.0/0.5
0.5 19 17 Normal
–3.5/0.5
0.5 18 16 Normal
–4.0/0.4
0.4 17 16 Normal
–5.2/0.3
0.3 15 13 High level alarm
Typical output levels are approximately 2 dB greater than the minimum levels.
Optical modulation index (OMI) for 77 channels (per channel): 0.0403.
OMI for 110 channels (per channel): 0.0337.
Optical transmitter wavelength is 1310 nm.
Bold type indicates default values.
Figure 5-14 illustrates the relationship between test-point voltage (Vdc) and optical power (dBm):
Figure 5-14
Test-point voltage versus optical power
Optical power (dBm)
-6
-5
-4
-3
-2
-1
0
1
2
3
4
5
3.000.25 0.50 0.75 1.00 1.25 1.50
Test point DC Voltage (Vdc)
1 Volt = 1 Mw optical power
10 Log x Voltage (DC) = optical power (dBm)
10
1.75 2.00 2.25 2.50 2.75