Motorola SG 2000 用户手册
5 - 1 4 O p e r a t i o n
SG 20 00 Ins tal la tion and O pera tion M anua l
7
To verify the position of the optical connector assembly, lift the metal tab and attempt to remove
the optical connector assembly from the module casting. The connector assembly should slide
out easily. If not, remove the sheet metal cover and verify the position of the optical connector
assembly. Release the metal tab and snap the optical connector assembly back into place.
the optical connector assembly from the module casting. The connector assembly should slide
out easily. If not, remove the sheet metal cover and verify the position of the optical connector
assembly. Release the metal tab and snap the optical connector assembly back into place.
C A U T I O N !
Do not pull the optical connector out more than two inches from the casting wall. If you
pull the connector out too far, you must disassemble the module and respool the fiber.
pull the connector out too far, you must disassemble the module and respool the fiber.
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If necessary, re-install the SG2-LR in the node.
SG2-IFPT Op tica l Transmitte r
The SG2-IFPT is an isolated Fabry-Perot return-path optical transmitter designed for use in the
SG 2000 node platform. It has a nominal optical output power of 0.4 mW and can be used in
conjunction with an AM-RPR, AM-OMNI-RPR/2, or other similar return path optical receiver.
Figure 5-16 illustrates the SG2-IFPT:
SG 2000 node platform. It has a nominal optical output power of 0.4 mW and can be used in
conjunction with an AM-RPR, AM-OMNI-RPR/2, or other similar return path optical receiver.
Figure 5-16 illustrates the SG2-IFPT:
F i g u r e 5 - 1 6
S G 2 - I F P T
S G 2 - I F P T
F
A
U
L
T
A
U
L
T
O
N
N
LASER
CURRENT
(1 V/A)
OPTICAL
POWER
(1 V/mW)
SG2000
Optical Transmitter
ASSEM BLED
IN MEXICO
SG2-IFPT
Table 5-3 provides information on the user-related features of the SG2-IFPT:
T a b l e 5 - 3
S G 2 - I F P T f e a t u r e s
S G 2 - I F P T f e a t u r e s
Feature Desc ription
Optical power test point
This test point enables monitoring of the optical output level of the
module. The nominal scale factor is 1.0 V/mW. The optical power
test point voltage is between 0.375 V and 0.425 V (optical power of
0.375 mW through 0.425 mW) when the module is enabled under
normal operating conditions. Note that the optical power test point
does not track changes in optical power due to the laser tracking
error.
module. The nominal scale factor is 1.0 V/mW. The optical power
test point voltage is between 0.375 V and 0.425 V (optical power of
0.375 mW through 0.425 mW) when the module is enabled under
normal operating conditions. Note that the optical power test point
does not track changes in optical power due to the laser tracking
error.
Laser current test point
This test point enables monitoring of the current drawn by the laser
diode. The nominal scale factor is 1.0 V/A. The laser current test
point voltage is between 4 mV through 90 mV (laser current of
4 mA through 90 mA) when the module is enabled under normal
operating conditions. The laser current is expected to vary widely
with changes in temperature, but should always remain between
the limits.
diode. The nominal scale factor is 1.0 V/A. The laser current test
point voltage is between 4 mV through 90 mV (laser current of
4 mA through 90 mA) when the module is enabled under normal
operating conditions. The laser current is expected to vary widely
with changes in temperature, but should always remain between
the limits.