Harvey,
I've been looking for 6 months on eBay, and everywhere else on the net.
I've seen tons of probes come up, but never a 10089A.
On that, I cannot help you. My logic analyzer is a different model,
much earlier, and takes different pods.
I bought the scope as a 2 channel oscilloscope - the data part was an extra.
But I've been looking for the probes in case I needed them. And now I do.
Which is why I (because my situation was reversed, needed the logic
analyzer, scope was a plus) made sure I got the probes.... sorry about
that.
I was hoping someone would be able to tell me which ones might be compatible
with my scope.
probably only those probes.
I'm very confused by what I see on eBay. For example, could you look at
this item:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2561536415&category=25395
and give me a general idea what the different pods and clock designations
are for? Do I need "pods" in addition to my cable or is "pod" a generic
term for a cable.
Pod is a generic term for cable. as you are using it.
To reduce circuit loading, there's active circuits in the pod, which
is connected to your logic analyzer by the cable, which generally has
an odd (and probably hard to find) connector on the other end. On the
circuit end, you have a clip which goes into the pod, and on the other
end of that clip, you need to have a small socket that goes over wire
wrap pins, onto test clips, or has a removable grabber on the end for
clipping onto parts.
The pod is responsible for the logic levels to internal conversion and
proper design is not a simple thing, especially at higher speeds.
Pods generally can have data or clock leads. Data leads are just
that, which run to the data channels, clock leads qualify the data, or
time it, and run to the clock channels.
The number of clock leads, how they are positioned, data leads, how
they are positioned, vary with the analyzer. There are 5 pods here,
looks like a complete set, which probably gives you at least 8 data
channels and one clock channel per pod.
All I want to do is look at 12 TTL level signals, triggering on (line 1 AND
line 4). I thought a simple 16 channel cable with leads would suffice. I
can't imagine what makes this so expensive at only 100 MHz.
They are custom, and are not made in large quantities. These
generally end up going for about 100 USD each, depending on type, and
how frantic people are to get them.
It might be that your probes are too new to show up as surplus. Have
you done a google search on them?
Yours is a 16 channel (2x8 probe).
A google search comes up with the following:
http://www.testequipmentconnection.com/Models/HP_10089A.htm
http://www.tucker.com/java/jsp/controller?event=CUST_PROD_DETAIL_SEARCH&partNo=AGL10089A&invID=29350
at least.
Price seems to be about 300 dollars for the two I looked at.
Harvey