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The '''Tektronix Type S-311''' Programmable Dual-Trace Sampling Plug-In Unit
is a [[560-series plug-ins|560-series plug-in]] designed for use in a [[567]]
as part of a Tektronix [[S-2000]] and [[S-3000]]­ series automated test systems.
In contrast to the [[3S6]] which uses external sampling heads,
the S-311 contains two samplers internally, like the [[3S76]] or [[3S1]].
However, unlike the 3S76 and 3S1, the S-311 gets its signal inputs via
[[BNC connector]]s on the rear panel.
The input impedance of each input is 50 Ω.
When the S-311 is inserted into the mainframe, its BNC input connectors must be manually connected,
as they are not designed to pair with a corresponding connector in the plug-in bay bulkhead.
The [[567]] mainframe has holes in the plug-in bay bulkhead at the location
of the signal input connectors and programming connector of the S-311.
The remote programmability of the S-311 typically involves a [[262|Type 262 programmer]].
Remote programming can control the mV/div, voltage offset, and mode,
i.e., channel A, channel B, or dual-trace.
The Type 262 controls the DC currents in the coils of six reed relays in the S-311.
The S-311 can be thought of as a [[3S76]] with remote programmability,
connectors on the rear, no delay, and no trigger pickoff.
Component numbers are the same in the two models.
The S-311 and 3S76 both have 0.4 nanosecond risetimes.
The sampler in the S-311 uses four Tek-made GaAs diodes.
The S-311 does not contain a signal delay.
The BNC signal input connectors on the rear panel of the S-311
are connected by short coaxial cables to the sampling bridge.
==Manuals ==
* [[Media:070-0468-01.pdf|Tektronix S-311 Manual (PDF)]]
* [[Media:070-0468-01.pdf|Tektronix S-311 Manual (PDF)]]
 
==Pictures ==
<gallery>
<gallery>
Tek s-311 photo.png|Front view. Low photo quality makes it impossible to discern the perimeter of the faceplate. It is standard 560-series size.
Tek s-311 photo.png|Front view. Low photo quality makes it hard to discern the perimeter of the faceplate. It is standard 560-series size.
Tek s-311 right.jpg|Right view.
Tek s-311 right.jpg|Right view.
Tek s-311 left.jpg|Left view.
Tek s-311 left.jpg|Left view.
Tek s-311 relays.jpg|Reed relays.
Tek s-311 rear.jpg|Rear view.
Tek s-311 rear.jpg|Rear view.
Tek_567_plug-in_connectors.jpg|Rear view from underneath of [[567]] plug-in bay bulkhead. Holes allow for S-311 signal input and programming signal connections.
Tek s-311 no knobs.jpg|S-311 with knobs removed
</gallery>
</gallery>
[[Category:560 series plugins]]
[[Category:Sampling plugins]]

Revision as of 15:02, 30 April 2019

The Tektronix Type S-311 Programmable Dual-Trace Sampling Plug-In Unit is a 560-series plug-in designed for use in a 567 as part of a Tektronix S-2000 and S-3000­ series automated test systems.

In contrast to the 3S6 which uses external sampling heads, the S-311 contains two samplers internally, like the 3S76 or 3S1. However, unlike the 3S76 and 3S1, the S-311 gets its signal inputs via BNC connectors on the rear panel. The input impedance of each input is 50 Ω.

When the S-311 is inserted into the mainframe, its BNC input connectors must be manually connected, as they are not designed to pair with a corresponding connector in the plug-in bay bulkhead. The 567 mainframe has holes in the plug-in bay bulkhead at the location of the signal input connectors and programming connector of the S-311.

The remote programmability of the S-311 typically involves a Type 262 programmer. Remote programming can control the mV/div, voltage offset, and mode, i.e., channel A, channel B, or dual-trace. The Type 262 controls the DC currents in the coils of six reed relays in the S-311.

The S-311 can be thought of as a 3S76 with remote programmability, connectors on the rear, no delay, and no trigger pickoff. Component numbers are the same in the two models. The S-311 and 3S76 both have 0.4 nanosecond risetimes. The sampler in the S-311 uses four Tek-made GaAs diodes.

The S-311 does not contain a signal delay. The BNC signal input connectors on the rear panel of the S-311 are connected by short coaxial cables to the sampling bridge.

Manuals

Pictures