6
T3 FIBER OPTIC LINE DRIVER
Quick Start Guide
If you’re familiar with the T3 Fiber Optic Line Driver, use this guide to prepare the
unit for operation.
Installation
Open the T3 Fiber Optic Line Driver’s case by unscrewing the two rear-panel
screws and sliding out the unit’s printed circuit board (PCB).
S
ETTING THE
I
NTERNAL
J
UMPERS
Set the main board jumper according to the following table:
Jumper
Description
Values
Factory Setting
JP2
Controls the AIS
On—AIS is
On
transmission to the
transmitted.
electrical or optical
Off—AIS is
interface when a minor
not transmitted.
alarm is detected.
S
ELECTING THE
T3 C
ABLE
L
ENGTH
Refer to the table below and select the cable length.
T3 Cable Length
Jumper Positions
JP1
JP2
JP3
Up to 225 ft.
Pins 2, 3*Pins 1, 2*Pins 2, 3*
226 ft. to 450 ft.
Pins 1, 2
Pins 1, 2
Pins 1, 2
More than 450 ft.
Pins 1, 2
Pins 2, 3
Pins 1, 2
*Factory settings.
NOTE
The maximum cable length complies with ITU-T G.703.
Slide the circuit board back into the case and replace and tighten the screws.
