Wiring The Rpi Unit - Northern Telecom Meridian 1 Installation And Maintenance Manual

Figure 11 : Opening the RPI cover

Wiring the RPI unit

The maximum two-way (between the RPI and the Base Station) dc loop
resistance for power pairs is 75 ohms. Each Base Station needs one or two
power pairs. The exact number depends on the wire size of the power pairs and
the distance between the Base Station and the RPI. Table 3 shows the
approximate maximum cabling distances. Remember that interconnections
increase the loop resistance.
Table 3 : Maximum cabling from RPI to Base Station
Wire size
22 AWG
24 AWG
Installing the hardware Page 27 of 220
WARNING!
Do not run unprotected power cables
outdoors.
The outputs of an RPI unit should not be
wired so that its lines are exposed.
Single-pair
2,500 ft
1,500 ft
Meridian Companion Installation and Maintenance Guide
Double-pair
4,000 ft
3,000 ft