O p e r a t i o n | 5 - 1 5 |
Feature | Description |
Transmitter enable | A green LED that provides visual indication of the transmitter’s |
| enable status. |
Fault indicator | A single red LED that lights when the hybrid current is outside the |
| normal operating range, the laser output power is below normal |
| limits, or the laser current is above normal limits. Because the laser |
| output requires a short period of time to stabilize, it is acceptable |
| for the fault indicator to illuminate during the stabilization interval |
| (approximately 2 seconds). Note that the module must be enabled |
| for the fault indicator to function. |
SG2 - FPT Optical Transmitter
The
Figure
SG2000 |
|
|
|
Transmitter |
|
| |
LASER | O | F | |
N | A |
| |
CURRENT |
| U | ASSEM BLED |
(1 V/A) |
| L | IN MEXICO |
|
| T |
|
Table
Table
SG2-FPT features
FeatureDescription
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.
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.
SG 2000 Installation and O peration Manual