19
CHAPTER 3: Installation and Setup
NOTE
The maximum cable length complies with ITU-T G.703.
Closing the case
Once you finish the internal settings, close the line driver’s case.
1. Slide the printed circuit board back into the case.
2. Screw in the two rear-panel screws that fasten the main board to the case.
3.3.2 C
ONNECTING THE
I
NTERFACES
Figure 3-3 shows the line driver’s rear panel.
Figure 3-3. Rear panel.
Connecting the T3 interface
The line driver’s T3 interface is terminated in two BNC coax connectors,
designated In and Out.
1. Connect the receive line by attaching a 75
Ω
coaxial cable to the BNC
connector labeled In.
2. Connect the transmit line by attaching a 75
Ω
coaxial cable to the BNC
connector labeled Out.
ALARM
ELECTRICAL
OUT
IN
OPTICAL
TX
RX
LINE FUSE
