Re: Use SMA for Precision 3.5 connector?
- From: John Larkin <jjlarkin@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Sun, 07 May 2006 13:51:55 -0700
On Sun, 07 May 2006 01:15:37 GMT, "jw" <letron_2000no__spam@xxxxxxxxx>
wrote:
Greets,
I just bought a used 54122T Oscope system which is supposed to measure
signals up to 12.5 GHz.
The manual for the test set, where the probe is connected to the scope, says
to use a APC-3.5 connector to connect the probe to the test set.
More specifically, this is a Precision 3.5mm female-to-female connector.
Is there any reason I could not use a SMA connector here?
Aren't these supposed to be able to nicely pass signals up to 20 GHz or so?
-TIA, jw
That should be OK. In theory, mating with SMA's could wear or distort
the APCs and reduce their precision. At 12 GHz, for this scope, it's
not an issue; it'll never be worse than real SMAs, which are pretty
much invisible at 12 GHz.
On my sampling scopes (Tek 11801's) I always install SMA-SMA
"connector savers" on all the sampling head and trigger inputs to
reduce wear on the real ones. They cost about $10 each.
Working on something fast?
John
.
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