HelixNet | User Guide
the power budget of the switch when attaching HXII-BP-X4 beltpacks.
3.6 HelixNet Infrastructure
This section contains guidelines for using HelixNet infrastructure components including cables,
connectors, splitter boxes and patch panels. HelixNet digital Partyline uses cable infrastructure to
transport audio and data over a range of frequencies. The maximum frequency used for
transmission is approximately 25MHz. Depending on the amount of audio and data transmitted,
HelixNet digital Partyline can work with as much as 90dB signal attenuation. However, the
receivers are very sensitive and are susceptible to crosstalk between cables.
Therefore it is important to maintain cable shield integrity through all connectors, splitter
boxes and patch panels.
The symptoms of crosstalk are:
l Main Station front panel LINE LED indicator turns amber or red
l Beltpacks, Remote Stations and Speaker Stations take longer than usual to boot and
connect.
l Beltpack, Remote Station and Speaker Station front panel signal strength indicators show
lower than usual signal strength (zero or one bar).
l Main Station diagnostics screen (Diagnostics->Powerlines) indicates collisions or errors
on the line.
3.6.1 Cables and Connectors
Clear-Com recommends the following shielded cables:
Microphone cables
Belden 9207 and 9463F with the two main conductors connected to XLR pin 2 and 3 and the drain
wire to pin 1.
Cat cables
Belden 1351A or 1533P with the following connections at the XLR connector:
Cat5/5e/6 XLR
White/Orange 1
Orange 1
White/Green 3
Blue 2
White/Blue 3
Green 2
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