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The Tektronix 261 is a switch for | {{Instrument Sidebar | ||
relays. | |manufacturer=Tektronix | ||
|model=261 | |||
|class=Multiplexer | |||
|series= | |||
|summary=switch for 50 Ω coaxial cables | |||
|image=Tek 262 catalog.jpg | |||
|caption=Tek 262 catalog image | |||
|introduced=1964 | |||
|discontinued=(?) | |||
|designers= | |||
|manuals= | |||
* [[Media:070-423.pdf|Tektronix 261 Manual]] (PDF) | |||
}} | |||
The '''Tektronix 261''' is a switch for 50 Ω coaxial cables with eight independent SPDT relays. Signal connections are through 24 [[GR-874 connector]]s. | |||
[[ | Each relay has a coil that operates on 10 mA (max. 35 mA) and has a resistance of 160 Ω. There are no internal catch diodes. | ||
The relay coil contacts are brought out to the rear panel, to be controlled by a [[262 | model 262 "programmer"]] or custom circuitry. | |||
{{MissingSpecs}} | |||
==Pictures== | |||
<gallery> | |||
Tek 261 1.jpg | |||
Tek 261 2.jpg | |||
Tek 261 3.jpg | |||
Tek 261 4.jpg | |||
Tek 261 5.jpg | |||
Tek 261 6.jpg | |||
Tek 261 7.jpg | |||
Tek 261 switch.jpg | |||
Tek 261 assembly.jpg | |||
Tek 261 coax switch internal.jpg|Internal view of one switch. | |||
</gallery> | |||
[[Category:Switches and multiplexers]] | |||
Latest revision as of 12:21, 20 August 2021
The Tektronix 261 is a switch for 50 Ω coaxial cables with eight independent SPDT relays. Signal connections are through 24 GR-874 connectors.
Each relay has a coil that operates on 10 mA (max. 35 mA) and has a resistance of 160 Ω. There are no internal catch diodes. The relay coil contacts are brought out to the rear panel, to be controlled by a model 262 "programmer" or custom circuitry.
Key Specifications
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Pictures
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Internal view of one switch.
