Grass Valley LGK-3901 User Manual
Page 20
GUIDE TO INSTALLATION AND OPERATION
14 | LGK-3901/DSK-3901
4.1.2
FPGA Card Front Edge
The FPGA card is the right-hand of the two cards. Its three elements are as follows (top-to-bottom):
• Watchdog
o
When green, the software is active and continually writing to the hardware watchdog. PGM and PVW
outputs are driven by the card, and the bypass relay on the rear panel is disabled..
o
When red, the software has failed to write to the hardware watchdog for at least one second. The
bypass relay is enabled allowing PGM IN to pass directly to PGM OUT. Preview output is disabled.
o
The watchdog LED will be red during boot-up, and green during normal operation
• PGM IN Status
o
When green, the incoming video on PGM IN is valid and also matches the expected video standard
o
When red, either video is missing from PGM IN or the video standard does not match the current
configuration.
• REF IN Status
o
When green, the URS reference or external reference or is present and locked.
o
When red, an external reference (URS or external) is missing, or has failed to lock
During software upgrade (see section 8.10), the three LEDs of the FPGA Card will be colored orange and cycle from
top to bottom. Note: This indicates that it is very unsafe to remove the card from the Densité frame. Once the upgrade
completes, the card will restart automatically and normal operation will be restored.
4.2 Compact Flash Memory
The Linux operating system and software are stored in
Compact Flash memory. Media files are also stored in
Compact Flash memory (LGK-3901 only). The memory card
is removable and is physically located as shown in the
accompanying diagram.
Additional Compact Flash memory cards may be purchased
to provide backup replacements in the event of a failure. A
backup memory card must always be pre-loaded with the
correct software, configuration files and media files (LGK-
3901 only). Media and other files may be backed up via the
LGK-3901 Web Page (see sections 8.6 and 8.8).
Figure 4.2 Compact Flash Memory location