RF-T860 Optical Transmitter
Page 1
Installation and Operation Manual
2. General Description
2.1 Introduction
RF-T860 is an intelligent high performance fiber Transmitter. It is widely
used at node locations of a fiber optic link to convert the RF signal to optical
signal in the HFC plant.
The capability of RF-T860 is:
Laser power ON/OFF can be adjusted by the lock. While the Lock is at
OFF position, the laser is cut off, the AC power still can be fed into the
unit.
LCD shows the working status, including eight working messages,
working address, warning message. Press the Status Display Switch
could select the showing of the status. When working status is
abnormal, the message on the LCD flashes, the Status Display Switch
is invalid, the RF circuit and laser power would be cut off
automatically.
Reset key is used to reset the working of the transmitter while the
Applied power is on, which commonly be used in the start and the
alarm status.
Three Indicating LED show the status of the unit, including the Applied
power, working status, RF level. Green lamp shows the status is
normal, while red lamp shows the status is abnormal. These LED are
monitored by the CPU.
ALC/MGC switch. Set the ALC/MGC switch to “MGC” side before you
adjust the RF attenuation. One RF Test Port is on the front panel.
Measure the RF input level to find the optical modulation depth. User
can obtain the accordant specification stipulate on this manual by
adjusting the RF attenuation. Set the ALC/MGC switch to “ALC” side,
none manual work is needed. Input the RF signal, the Unit adjust the
Gain of the RF to maintain the RF Input Level and the general depth of
the optical modulation index.
RS232 port is installed for the monitor control of the CPU.
