Sierra Video DFR-8300 - Manual (Page 29)

DFR-8300 Series User Manual (Rev. 2.0) DFR-8310 Series Setup
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SMPTE Fault Reporting Option
The SMPTE 269M Fault Reporting system, also known as a SMPTE “alarm”, provides an indication if
one or more frame cards encounter a fault or an abnormal condition. This option is available when an
MFC-8310 or MFC-8310-N is installed in the Frame Controller Slot of a DFR-8310 frame. The MFC-
8310 is included if the frame has cooling fans in the front door. The individual card(s) can report fault
conditions to the MFC-8310(-N) frame controller card, which in turn drives a BNC connector on the
DFR-8310 series frame. When the frame connection is interfaced with a customer-designed system of
LEDs or audible alarms, faults can be traced to a specific frame when a card fault occurs within that
frame. For additional information on alarm system design, refer to the SMPTE document
ANSI/SMPTE 269M - 1999.
Frame Connections
The SMPTE 269M Fault Reporting connection on openGear DFR-8310 series frames is provided by
the FAULT BNC connector, for interfacing with a customer-designed alarm system. Refer to Figure
3.2 for the connector location.
Figure 3.2 SMPTE 269M Alarm Reporting Frame Connections
The SMPTE Alarm BNC connector may be wired to an external alarm system for reporting alarms in
SMPTE 269M format. The circuit can drive a 20mA alarm load. For more details on this type of
system, refer to the document ANSI/SMPTE 269M - 1999, available from SMPTE.
Details
The fault report contacts are closed when the card detects an internal failure or a power loss condition.
The fault report contacts are closed for about 2 milliseconds every 16 ms to report any error for which
SMPTE fault reporting has been enabled. Some internal failures may include:
• Hardware failure of any card or power supply.
• Loss of AC power to any power supply
• “Soft” errors from any card setup to detect and report such errors