Hello,
Can someone please tell me the following:
FS input drive referred to the RF input connector, at perhaps about
500 MHz
Burnout threshold, same location and similar frequency.
Thanks much,
Dana Whitlow
Microwave Receiver Specialist
Arecibo Observatory
(787) 878-2612 ext 328
.
the data sheet says the max input at the ADC is 2Vpp differential,
which is 12 dB above full scale, or +10 dBm at the SMA input,
assuming a sine wave input.
best wishes,
dan
On 3/24/2010 12:34 PM, dana whitlow wrote:
Hello,
Can someone please tell me the following:
FS input drive referred
cheap RG-58
cables I once bought which do pretty well up to roughly 1 GHz,
above which the loss rather abruptly becomes much higher in a
spectacular fashion.
Dana Whitlow (Arecibo Observatory)
Dan Werthimer wrote:
hi jon,
there are a couple of possibilities that might explain
!).
Regarding interleaving spurs, what happens if one adjusts the interleaving
for minimal spurs at HF? Do they then get worse at LF?
Dana Whitlow
Arecibo Observatory
On 2/2/2011 1:32 PM, Robert F. Jarnot wrote:
Hong, Paul, Francois,
We (at JPL) have spent a fair amount of time in the past
Hi Danny,
I'd want to take a close look at output jitter (phase noise)- you
may be playing with fire if you bypass the voltage regulator and
run the unit off a supply that is not squeaky-clean.
Dana Whitlow
Arecibo Observatory
On 5/6/2011 7:43 AM, Jason Manley wrote:
Hi Danny
, in
real time, most questions about whether or not the A/D was OK.
Dana Whitlow
Arecibo Observatory
On 2/15/2013 7:01 PM, r...@physics.ucsb.edu wrote:
I have been having alarming trouble with our
83000 ADC board that corresponds to the
adc83000x2 block in the CASPER library. The
ADC board seems
, and that kind of thing.
Or perhaps there's a failure in your signal generator itself.
Ordinary component drift is of the character of one (or a few)
percent change in value occurring slowly and fairly smoothly
over a span of several years.
Dana Whitlow
Arecibo Observatory
On 3/22/2013 6:00 PM, r
at, but he
didn't say how his heatsink was going to dispose of the heat.
Dana Whitlow
Arecibo Observatory.
On 4/16/2013 7:03 AM, Francois Kapp wrote:
Hi Brad,
Given it's a balloon payload, what are your mass constraints?
Conductive cooling is going to involve throwing metal at the problem
I didn't know about Xilinx vent holes either. My comment was based
entirely
on my sincere faith in Whitlow's 3rd law: Everything leaks. Although
I'm no
vacuum guru, I've brushed against the art enough to have learned that lesson
very well.
Dana
On 4/16/2013 7:47 AM, Steve Maher wrote:
west order bits of the ADCs.
Dana Whitlow
Arecibo Observatory
Hi, Adam,
I haven't looked at the spectral content of a terminated input before
so I don’t have any comparative results, but I think the spikes you
are seeing are caused by mismatched gains and/or offsets of the ADC’s
interleave
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