Motorola Starline SG 2000 - Table 5-1 SG2-LR Features; Table 5-2 SG2-LR Minimum Output Levels

Operation 5-11
SG 2000 Installation and Operation Manual
Tables 5-1 and 5-2 provide additional information on the user-related features and output levels of
the SG2-LR:
Table 5-1
SG2-LR features
Feature Description
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.
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.
Receiver enable
A green LED that provides visual indication of the receiver’s
enable status.
Fault indicator
A red LED that illuminates when the module is enabled but
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 (
HIGH)
or below (
LOW) the recommended optical input power range.
Table 5-2
SG2-LR minimum output levels
Optical input
level(dBm/mW)
TP Volts
(1 mW=1 V)
Output (dBmV)
77 channels
Output (dBmV)
110 channels
Comments
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