Motorola SG 2000 operation manual Test-point voltage versus optical power, 0.3

5 - 1 2 O p e r a t i o n

Optical input	TP Volts	Output (dBmV)	Output (dBmV)	Comments
level(dBm/mW)	(1 mW=1 V)	77 channels	110 channels
–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

	5
	4
(dBm)	3
	2
	1
power	0
	-1
Optical	-2
	-3
	-4
	-5
	-6
	0.25	0.50	0.75	1.00	1.25	1.50	1.75	2.00	2.25	2.50	2.75	3.00

Test point DC Voltage (Vdc)

1 Volt = 1 Mw optical power

10 Log10 x Voltage (DC) = optical power (dBm)

SG 2000 Installation and O peration Manual