Clear-Com HLI-FBS - Manual (Page 30)

Key to analog and digital cabling comparison diagram
Feature Description
A
Example 4-channel analog main station (MS-704 shown).
B
HMS-4X Main Station (digital main station).
P1
P2
P3
P4
PF
Partyline channel 1
Partyline channel 2
Partyline channel 3
Partyline channel 4
Program Feed
C
In a traditional analog partyline system, one cable is dedicated in hardware to each
partyline channel. This can make it more difficult to build redundancy or spare capacity
into the installation (owing to the number of connectors / cables dedicated to the
delivery of channels).
D
In the HelixNet system, one cable can carry multiple channels (all four partyline
channels plus a Program Feed). Because one cable can carry all channels, the second
connector for each line can either be used for redundancy (flybacks) or for future
extensions / changes to the cabling topology (layout).
E
Example analog partyline beltpacks (RS-602 shown). Analog beltpacks must be re-
cabled to use alternative channels, requiring the physical re-location of cabling for new
configurations.
To aid switching, Clear-Com sells additional switching equipment (the SB-704 and
RCS-sh2700 devices). The RS-602 (6-pin XLR) beltpack requires the YC-36 splitter /
combiner to combine 2 channels into a 6-pin configuration, and multi-conductor cables.
The RS-603 (3-pin XLR) beltpack requires a TWC-701 device to combine 2 Clear-Com
channels in a single twisted pair.
F
HBP-2X Beltpacks. Digital beltpacks can support any two of the four partyline channels
(plus Program Feed), wherever they are physically located on the system.
New configurations of beltpacks and channels can be deployed without the physical
relocation of assets.
Table 24: Key to analog and digital cabling comparison diagram
Note:
The capabilities of different cable types may impact how far away beltpacks can be placed from the main
station, and the topologies you use. For more information about cabling, see
Appendix C:Cabling reference.
30 HelixNet Partyline User Guide