Motorola SG 2000 用户手册
O p e r a t i o n
5 - 1 1
SG 20 00 Ins tal la tion and O pera tion M anua l
Tables 5-1 and 5-2 provide additional information on the user-related features and output levels of
the SG2-LR:
the SG2-LR:
T a b l e 5 - 1
SG 2 - L R f e a t u r e s
SG 2 - L R f e a t u r e s
Feature Desc ription
Optical power test point
This test point enables monitoring of the optical power level
at the input to the module. The nominal scale factor is
1.0 V/mW.
at the input to the module. The nominal scale factor is
1.0 V/mW.
Hybrid current test point
This test point enables monitoring the current drawn by the
amplifier section of the integrated optical receiver hybrid. The
nominal scale factor is 1.0 V/A. The hybrid current test-point
voltage is between 0.150 V and 0.350 V (hybrid current of
150 mA through 350 mA) when the module is enabled under
normal operating conditions.
amplifier section of the integrated optical receiver hybrid. The
nominal scale factor is 1.0 V/A. The hybrid current test-point
voltage is between 0.150 V and 0.350 V (hybrid current of
150 mA through 350 mA) when the module is enabled under
normal operating conditions.
Receiver enable
A green LED that provides visual indication of the receiver’s
enable status.
enable status.
Fault indicator
A red LED that illuminates when the module is enabled but
the hybrid current is outside the normal operating range.
the hybrid current is outside the normal operating range.
Optical power status
A green LED that is ON (
NORM
) when the optical power is
within the recommended operating range (refer to Table A-4).
Two red LEDs indicate that the optical power is above (
Two red LEDs indicate that the optical power is above (
HIGH
)
or below (
LOW
) the recommended optical input power range.
T a b l e 5 - 2
SG 2 - L R m i n i m u m o u t p u t l e v e l s
SG 2 - L R m i n i m u m o u t p u t l e v e l s
O p t i c a l i n p u t
l e v e l ( d B m / m W )
l e v e l ( d B m / m W )
T P V o l t s
( 1 m W = 1 V )
O u t p u t ( d B m V )
7 7 c h a n n e l s
O u t p u t ( d B m V )
1 1 0 c h a n n e l s
C o m m e n t s
3.2/2.1
2.1
32
30
Low level alarm
3.0/2.0
2.0
31
30
Low level alarm
2.8/1.9
1.9
31
29
Low level alarm
2.6/1.8
1.8
30
29
Low level alarm
2.3/1.7
1.7
30
28
Low level alarm
2.0/1.6
1.6 29
28
Normal
1.8/1.5
1.5 29
27
Normal
1.5/1.4
1.4 28
26
Normal
1.0/1.3
1.3 27
25
Normal
0.8/1.2
1.2 27
25
Normal
0.5/1.1
1.1 26
24
Normal
0.0/1.0
1.0
25 23
Optimum
–0.5/0.9
0.9 24
22
Normal
–1.0/0.8
0.8 23
21
Normal
–1.5/0.7
0.7 22
20
Normal