www.z-band.com/866-902-2606
11
“GigaBUD 1000” Installation Guide
Interconnecting GigaBUD 1000s in the Backbone
When a GigaBUD 1000 receives a video input signal from the Source it is
automatically designated as a
Master
, and becomes a
Level 1
device. This is
true if the Source connection is a Coax connection to the “CATV” input of a
GigaBUD 1000 or a Fiber connection to the “Fiber Input” port (Note: A GigaBUD
1000 with an internal Fiber Receiver is always a Master, while all non-fiber
GigaBUD 1000s may be either a Master of a Satellite Device). When a non-fiber
GigaBUD 1000 receives a coax signal at the “Cascade In” port, it is automatically
designated as a Satellite device (may be a Level 2, 3, or 4 device). The process
for connecting GigaBUD 1000 units together is called
Cascading
.
Each GigaBUD
1000 has 8 coax “Outbound “ ports which can be connected to the coax
“Cascade In” port of up to 8 Level 2 satellite GigaBUD 1000s. Each Level 2 device
can then connect to up to 8 Level 3 devices and each Level 3 device can connect
to up to 8 Level 4 devices. If all “Cascade Out” ports of all Level 1, 2, & 3 devices
are used, a single Master can Cascade together 585 GigaBUD 1000s.
Cascading must be limited to 4 Levels.
Video Quality, in a Coaxial Backbone configuration, uses a “240 MHz Pilot
Tone”, in the guard band between channels 26 & 27 ,from each Master GigaBUD
1000 to all levels of it’s Satellite GigaBuds. This may cause interference with
these adjacent channels. In order to prevent the potential interference, the
GigaBUD 1000 enables turning off the pilot tone after the AGC has set the signal
levels to each Satellite device. However, in the event of a power outage, the
Master devices will re-power to a “Tone On” state. The Pilot Tone, at each
Master must then be Manually turned off.
Re-mapping channels 26 & 27 to other available channels, if possible will
eliminate this potential inconvenience.
