User's Manual

The power cable connector is Switchcraft EN3C6F, which is a female connector. The connector
on the Transceiver is male.
Table 5-3: Cable wiring.
Pin Signal Belden
8762
1 DC Return
(ground)
Black
2 +DC (+8.5 Vdc) White or Red
3-6 Future --
5.8.1 Internal Headers
No connect
+8 Vdc
Ground/return
Data -
Data +
No connect
+8 Vdc
Ground/return
Data -
Data +
Receive Module
AR105
Transmit Module
AR150
To SMA
To SMA
3
2
4
5
1
6
Cord connector Rear View =
Panel connector Front View
dot
Figure 5-21: Internal connector pin-outs.
5.9 Downtilt
Generally tilting the ARCell Hub Transceiver downward is not needed to achieve the 5-mile
range.
The math is: if a Hub Transceiver is mounted on top of a building at a total height H, and the
farthest subscriber is a distance D, then the optimum downtilt is Arctangent = H/D.
However, in practice, mounting a pipe on a roof so the pipe is vertical is only accurate to 1 or 2
degrees at best. The common practice is to visually compare the vertical pipe to some vertical
object. Another is to use a “spirit” level (the ones with a bubble) or a fence-post-level (also with
bubbles). Under these circumstances, trying to downtilt by only 1 or 2 degrees is inappropriate.
June 2003 Page 5-24