Motorola Starline SG 2000 Installation And Operation Manual page 76

5 - 1 2 O p e r a t i o n
O p t i c a l i n p u t
l e ve l ( d B m / m W ) ( 1 m W = 1 V )
–2.0/0.6
–2.5/0.6
–3.0/0.5
–3.5/0.5
–4.0/0.4
–5.2/0.3
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):
F i g u r e 5- 14
T est-po int v olt ag e v e rs us opt i ca l pow er
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
0.25 0.50 0.75
S G 2 0 0 0 I n s t a l l a t i o n a n d O p e r a t i o n M a n u a l
T P V o l t s O u t p u t ( d B m V )
7 7 c h a n n e l s
0.6 21
0.6 20
0.5 19
0.5 18
0.4 17
0.3 15
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
O u t p u t ( d B m V ) C o m m e n t s
1 1 0 c h a n n e l s
19 Normal
18 Normal
17 Normal
16 Normal
16 Normal
13 High level alarm
1.75 2.00 2.25 2.50 2.75 3.00