Broadata Communications 730E-T Series - Manual (Page 6)

BCI 730E User’s Manual
Fiber Optic CATV Transmitter
Broadata Technical Support, [email protected] 7
2.2 APC Loops
Due to the aging of the laser diode, the optical power will drop
down; the Carrier Noise will decline, on the same time the CSO
and CTB would get bad. The Auto Power Control Loop is
mandatory to maintain the stable of the optical power, to control
the optical power of the laser automatically. One optical fiber
detector circuit is sealed in the semi-conductor laser parts,
which could supervise the laser diode.
2.3 RF Loops
The RF circuit is used for amplifying the RF signal, Pre-distortion
of the RF signal.
2.4 Data Collection, Control and Internet
The optical transmitter can be monitored by software through
connecting a PC via a RS-232 interface cable to the Service-
PC-Interface socket.