For one of the FPGA projects I'm working on I need to probe a whole bunch of signals between a carrier board and an FMC module using my Tektronix TLA715 logic analyser + TLA7AA4 acquisition module. I thought it would be interesting to show / share some of this to give people some ideas about what is out there.
Some of the signals in the project are in the 200MHz-ish range and I want to collect around 60 signals. For an earlier version of the project which used much lower frequencies I got an FMC breakout board from Zebax.com and soldered a lot of wires to a 0.1" header to mictor converter board but that was a lot of work and I didn't want to do that again. Also things get 'interesting' when probing high frequency signals. The cheapest probes (on Ebay) for the TLA7AA4 module are the P6860 and these are intended to be mounted on a special footprint on the board in order to minimise influences on the signal. Each probe pin is an active FET probe which has a very low input capacitance and a very high bandwidth (>2GHz). With some haggling a complete probe cable (34 channels) costs around $40 each + shipping. The breakout board is a different story: it costs nearly $400 from Zebax.com but it has 12 layers and according to Zebax it can be used up to 10GHz.
One of the advantages of the Tektronix TLA7AA4 module is that is has 4 analog outputs (2GHz bandwidth) which can carry any of the input signals. This means that the logic analyser probe also provides a very high quality analog probing capability for use with an oscilloscope.
Below a picture of the setup:
The TLA7AA4 acquisition module front view: