GR-874 connector: Difference between revisions

From TekWiki
Jump to navigation Jump to search
No edit summary
No edit summary
Line 18: Line 18:


The regular 50 Ω version is used in the [[1S1]], [[1S2]],  
The regular 50 Ω version is used in the [[1S1]], [[1S2]],  
[[3S1]], [[3S7]], [[3T7]], [[4S1]], [[4S2]], [[5T1]], [[5T1A]], [[5T3]], [[7M11]], [[N]], [[S-1]], [[S-2]], [[106]], [[109]], [[110]], [[113]], [[191]], [[280]], [[281]], [[282]], [[282]] and possibly others.
[[3S1]], [[3S7]], [[3T7]], [[4S1]], [[4S2]], [[5T1]], [[5T1A]], [[5T3]], [[7M11]], [[N]], [[S-1]], [[S-2]], [[106]], [[109]], [[110]], [[113]], [[191]], [[280]], [[281]], [[282]], [[P6051]] and possibly others.


By the 1970s, GR-874 connectors were being supplanted by SMA connectors in test equipment,
By the 1970s, GR-874 connectors were being supplanted by SMA connectors in test equipment,

Revision as of 08:33, 24 January 2016

General Radio 874 (GR-874) connectors are hermaphroditic (asexual) coaxial RF connectors developed by General Radio in the late 1940s.

They are typically for 50 Ω impedance, but versions for 75 Ω and 125 Ω were available using the same ground shield and housing, but different center pin geometry. Different versions of the connector have different maximum voltage ratings; 1000 V is typical. There are locking and non-locking versions.

GR-874 connectors are carefully engineered to keep a constant impedance throughout the signal path, by varying connector diameters between free-air and dielectrically supported sections. These connectors therefore exhibit very little reflection and are well suited for gigahertz and pulse applications.

The Tektronix 519 uses a 125 Ω GR-874 connector which has the same ground housing as the 50 Ω variant, but has a center pin that is thinner and shaped differently.

The regular 50 Ω version is used in the 1S1, 1S2, 3S1, 3S7, 3T7, 4S1, 4S2, 5T1, 5T1A, 5T3, 7M11, N, S-1, S-2, 106, 109, 110, 113, 191, 280, 281, 282, P6051 and possibly others.

By the 1970s, GR-874 connectors were being supplanted by SMA connectors in test equipment, see e.g. the progression from the S-1 to the S-4 sampling heads.

Links

Pictures