Grass Valley Maestro Master Control Installation v.2.4.0 - Manual (Page 79)

MAESTRO Installation and Service Manual 79
Customer Requirements
System Protection
The hardware control panel is equipped with redundant power supplies.
A second power supply is available for the Processor frame as an option.
Processor Backup Battery
Each Maestro Processor rear panel is equipped with a plug-in, rechargeable
lithium-ion battery used to back up on-board Synchronous DRAM.
The battery is rated for approximately 36 hours or 500 power cycles.
The charge status of the battery can be checked in the Deployment Control
Center. For the location of this battery, see
page 86 .
Alarm System
Note There is no electrical connection between the Processor, frame, and hard-
ware control panel alarm systems.
Processor Alarm
Each Maestro Processor board has an independent alarm system for moni-
toring the following elements:
• On-board power supply voltage
• Board temperature
• CPU submodule running
• Genesis FPGA loaded
• Configuration FPGAs loaded
The alarm condition is indicated by a red LED on the front edge of the Pro-
cessor board, and by a state change on the rear panel “Alarm” BNC.
Alarm BNC
Electrically, the Alarm BNC operates according to SMPTE standard 269M-
1999. When an alarm is asserted, the circuit associated with the Alarm con-
nector will present low impedance to an external current source circuit pro-
vided by the customer. See
Figure 30 .