On 31 May 2016 00:24:25 -0700, you wrote:
...High-Z passive probes support the full bandwidth of the 11A34 but only
with a terminated 50 ohm source which has a 25 ohm impedance. The
same applies to any 300+ MHz high-Z input.
I don't recommend the use of normal Readout Probes with TekProbe Interface Instruments (like your 11A34). Damage to the Probe Interface Connector(Ring) is very likely.I remember this warning from Tektronix. The problem was with older
Tektronix readout probes like the P6062 and P6063 which have a very
stiff readout connector pin which would gouge the TekProbe interface.