Hi,
What is the CHS_LED1 signal ?
This is the red LED below the green/power LED on the front of
the iStar 1.3U chassis.
In the recent past we've started to see a couple of systems
where this LED turns on for some reason.
The schematics show it connects to the D1 pin of the Actel part at U60.
Thanks,
Matt
On Fri, 16 Oct 2009, David George wrote:
Hey Griffin.
Also, when hooking a ROACH up in a chassis where does the power switch and
LED cables go? Could someone send me a picture or schematic of this
perhaps? Thanks.
On the clocks:
arb_clk is a configurable-frequency, internal clock derived from the system
clock using DCMs
aux_clk0 and aux_clk1 correspond to the two clock inputs near the ZDOKs (J13
and J14) (not sure which is which)
Also, when hooking a ROACH up in a chassis where does the power switch and
LED cables go? Could someone send me a picture or schematic of this
perhaps? Thanks.
The cables hook onto the J7 connector in the corner. You just need to follow
the silkscreen labels. The only gotcha is that you need to connect the
power switch to CHS_SW not PWR.
Hopefully this stuff will be documented properly. Some day.
Cheers,
David
--
David George
Digital Design Engineer
Karoo Array Telescope
Tel: +27 21 531-7282
Fax: +27 21 531-9761
Email: david.geo...@ska.ac.za
Web: www.ska.ac.za
