Connectors: Difference between revisions

Connectors (view source)

546 bytes added , 4 July 2015

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 ==SMA==
-SMA connectors are good to about 20GHz.  The male connectors have a protruding center
+SMA type are coaxial 50&nbsp;Ω connectors good to about 20&nbsp;GHz.
-pin and ground shroud that screws on.  They are similar to UHF connectors, but much smaller
+The male connectors have a protruding center pin and ground shroud that screws on.
-and with much tighter tolerances and better controlled impedance.  The female is threaded
+The female is threaded on the outside.
-on the outside.  SMA connnectors are used on the [[S-52]], [[7T11]], [[S-4]] and [[S-6]].
+(Note that in the "Reverse Polarity" or "RP-SMA" connectors found in WLAN equipment,
+the pin is swapped to the shell with the exterior thread.)
+SMA are somewhat similar to UHF connectors, but much smaller - initial Tektronix literature<sup>(Note1)</sup> calls them "3&nbsp;mm connectors" -
+and with much tighter tolerances and better controlled impedance.
+SMA connnectors are used on the [[S-50]], [[S-51]], [[S-52]], [[7T11]], [[S-4]], [[S-6]] and many later GHz-class
+instruments such as the [[:Category:11800 series sampling plugins|SD-xx]] series sampling heads.
+(1) See [[Media:Service Scope 52 Oct 1968.pdf  | Service Scope No. 52, Oct 1968]] p.16, ''Something New in Oscilloscope Connectors''
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