Intelligent Building Series C-Bus Infrared Transmitter Installation Instructions
5.0 C-Bus System Clock
The Infrared Transmitter Unit incorporates a software selectable C-Bus System Clock
used for synchronising data communications waveforms on the C-Bus Network. This
feature may be enabled using the C-Bus Installation Software. At least one C-Bus
System Clock is required to be active for successful Network communications. No more
than three units on any C-Bus Network should have active Clock circuitry, so this option
should normally be disabled using the C-Bus Installation Software.
6.0 C-Bus Network Burden
The Infrared Transmitter Unit incorporates a software selectable C-Bus Network
Burden. This Network Burden may or may not be required to ensure correct operation of
the C-Bus Network. If in doubt, consult the C-Bus Calculator – Network Design
Verification Software Utility.
The Network Burden can be enabled using the C-Bus Installation Software.
CAUTION:
The Graphical User Interface (GUI) software is designed to prevent the Burden from
accidental selection. The following steps are required to correctly enable the Network
Burden from the GUI:
1. Set the Unit Address to 001;
2. Turn to the ‘Global Tab’ of the GUI;
3. Select the Network Burden check box (cross inside box for ON);
4. Click the OK button;
5. Select ‘Save to Network’ and/or ‘Save to Database’;
6. Click the OK button; then
7. Repeat steps 3 and 4 within 20 seconds, to save your selection.
To disable the Network Burden the same process applies except the Burden selection
check box is cleared (remove cross).
7.0 C-Bus Power Requirements
The 5034NIRT Infrared Transmitter Unit draws 32mA from the C-Bus Network.
Adequate C-Bus Power Supply Units must be installed to support the connected
devices. If in doubt, consult the C-Bus Calculator – Network Design Verification
Software Utility.
8.0 Power Up Load Status
The status of any infrared controlled device may be affected by mains power loss. For
example: a television set which was on will lose power, and may not return to the On
state after a mains power failure. In such a case the Infrared Transmitter may be used
to turn the device back On, provided adequate means implemented to detect the power
loss.
© Copyright 2002 Clipsal Integrated Systems Pty Ltd Page 8
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