Nevion FR-2RU-10-2 - Manual (Page 24)

FR-2RU-10-2 Rev. N
nevion.com | 24
7.5 Card detection (hot swap)
The controller must send a "hello" command to gain control over a board, this is to
make sure that the control software is aware of any card changes. After a power up or
hot swap, the card does not respond to any other command than hello.
7.6 Hello command
This command establishes communication with a new unit. An example of
communication with SDI-EO and SDI-OE is shown in the following. The command is
short (a single question mark) to save bandwidth. The card will respond with card info.
If the card is not present, the command times out.
A typical response would be:
0409?
0904EO/SDI/1310nm,-7.5dBm\
hw rev 1.0\
sw rev 1.0\
protocol ver 1.0
This is an electrical to optical converter for SDI, with a -7.5dBm 1310nm laser. The
hardware revision is ver 1.0, and the software version is ver 1.0. The protocol version is
1.0.
7.7 Electrical to optical converters
7.7.1 Hello command
An EO converter will respond to a hello command with:
0409?
0904EO/SDI/1310nm,-7.5dBm\
hw rev 1.0\
sw rev 1.0\
protocol ver 1.0
or
0409?
0904EO/T140/1310nm,-7.5dBm\
hw rev 1.0\
sw rev 1.0\
protocol ver 1.0
7.7.2 Info command
The card will respond to the command string "info" by sending the card status. This is a
typical example.
0409info
0904laser on\
SDI signal strength = 81 %\
vcc = 5.04 V\
laser fail: no