Ross NK-16, Руководство пользователя

Страница: 36 / 108

3–20 • Installation NK Series User Guide (1.0)
Figure 3.34
NK-GPI Connection Example
NK-GPI configuration, via the NK-IPS and a PC connected to a network, allows users to customize GPI inputs and
outputs, as well as the input mode (Latch or Return), and a Panel Link Address, configuring the NK-GPI to be
controlled from a connected NK Control Panel.
The T-Bus Control System
NK routers and panels are linked via the T-Bus Control System, a multi-drop RJ-45 control system supporting
collision detection and half-duplex communication. The T-Bus Control System minimizes cable connections
between devices, acting as both a reliable means to phantom power selected devices and as the communications
line.
The T-Bus Control System’s collision detection support ensures that if two devices transmit messages at the same
time they will not send incorrect data to other devices on the line. All components that utilise the T-Bus Control
System are able to monitor communication on the line to ensure that no two devices are transmitting at the same
time.
The Heartbeat
Figure 3.35
Heartbeat Display
NK Series routers indicate their status by a pulsating LED, called a heartbeat. The heartbeat flickers when a switch
message is handled by the router. It dims slightly to indicate a handled message that did not result in a switch.
The heartbeat is also connected to the alarm status. It monitors the status of the power supply and signifies a
problem by pulsating at a noticeably faster rate.
NK Series Router Power Supplies
Each NK router, control panel and control device comes standard with a single external AC/DC power supply. The
exceptions to this are devices that are powered from the T-Bus, such as the RCP-NK1, NK-SCP/A and NK-GPI.
Redundant external power supplies are available. Please contact Ross Video.
Optionally, a 100W rack mount redundant power supply, NK-RP1/P, is available to power up to 4 devices. Refer to
the
NK-RP1/P User Guide
for additional information.
Figure 3.36
NK-RP1/P and NK-RP1/PN Rear Connectors
NK-GPI
Internet Protocol Server
NK Series Control Panel
NK Series Router Level
.....
.....
T
-Bus
RS-485
1 18
GPI Tallies
CCUs 1-16
16 GPI Inputs
16 GPI Outputs
USO
RESTRITO