These connector savers are fairly cheap, like $10, SMA male-female things. The rise is an SD24 TDR step plumbed into an SD30 40 GHz sampling head.
The SD30 connector is actually a 2.4 mm.
-- John Larkin Highland Technology, Inc jlarkin at highlandtechnology dot com http://www.highlandtechnology.com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom laser drivers and controllers Photonics and fiberoptic TTL data links VME thermocouple, LVDT, synchro acquisition and simulation
I got a bunch of cheap 'n' cheerful Chinese ones for about $1.50 each from eBay. I measured them with callipers before attaching them to my scopes, for sure, but they were in spec and seem to work fine. I haven't TDRed them, but I will.
Sometimes it's almost impossible to remove an SMA without rotating the centre conductor, and that kills them fast.
Cheers
Phil Hobbs
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
Nearly all of my SMA connectors, adapters, and cables (largely ebay, flea market, and found in a dusty box somewhere) are transparent to an SD24 TDR step. Long cables do get lossy.
The tough transition to make is an edge launch from SMA to a microstrip trace. I've never done one without some sort of bump. I've fot some claimed 26 GHz Johnson/Emerson edge-launch samples coming.
-- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators
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