Grass Valley 8937 v.1.1.0 - Manual (Page 39)

8937/8937D — Instruction Manual 39
Status Monitoring
External Frame Alarm
An external Frame Alarm output is available on pins 8 and 9 of the RS-232
connector on the rear of the frame. The Frame Alarm outputs a voltage
level indicating there is an alarm condition on the Module Health Bus or
one of the other frame components reported to the Frame Monitor module
in a Gecko 8900TF or GeckoFlex 8900FF frame or the 8900NET module in
an 8900TFN and GeckoFlex 8900FFN frame.
• The Module Health bus is a separate line on the frame motherboard
that provides a means for older or less capable modules (such as DAs
with no microprocessor) that cannot communicate over the Frame
(serial) bus to report warning and alarm conditions to the external
Frame Alarm. All media modules in the frame report a voltage level to
this line when a warning condition occurs on the module. The specific
warning or module location is not reported, only an indication that an
warning condition has occurred.
• Frame alarm reporting from other frame components can be enabled
and disabled using DIP switches on the Frame Monitor and 8900NET
module. For frames with an 8900NET module, the Frame Alarm
Reporting web page allows configuration of the alarms and warnings
that are reported to this external Frame Health Alarm.
LED Reporting
LEDs on the front of media modules, the Frame Monitor or 8900NET mod-
ules, and the front covers of the 8900TF/TFN and GeckoFlex FF/FFN
frames indicate status of the frame and the installed power supplies, fans
in the front covers, and module status. (The 8900TX-V/A and GeckoFlex
8900FX frames have no LED indicators on the front cover.)
• LED reporting from the modules in the frame to the 8900NET module
is configurable using the 8900NET LED Reporting web page.
• The Status LEDs for this module are described in Operation Indicator
LEDs on page 18 . LEDs for the 8900NET module are described in the
8900NET (Net Card) Network Interface Instruction Manual.