1A1: Difference between revisions

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217 bytes added ,  6 May 2011
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The Type 1A1 plug-in has two channels and a -3dB point of 50MHz at 50mV/div, 28MHz at 5mV/div,
The Type 1A1 plug-in has two channels and a -3dB point of 50MHz at 50mV/div, 28MHz at 5mV/div,
and 2Hz to 15MHz at 500uV/div when channels 1 and 2 are cascaded.
and 2Hz to 15MHz at 500uV/div when channels 1 and 2 are cascaded.
Early production used a Nuvistor front-end, and rotary input switches that were concentric
Early production used a Nuvistor front-end, and [[rotary_input_switch|rotary input switches]] that were concentric
with the BNC jacks, while later units have FETs and lever switches.  Type 1A1 uses the "ALT SWEEP SLAVE PULSE" signal
with the [[Connectors#BNC|BNC]] jacks, while later units have FETs and lever switches.  Type 1A1 uses the "ALT SWEEP SLAVE PULSE" signal
that is sent by scopes on pin 7 of the plug-in connector.  In a Type [[547]] mainframe, this signal allows channel 1 to be
that is sent by scopes on pin 7 of the plug-in connector.  In a Type [[547]] mainframe, this signal allows channel 1 to be
displayed using the "A" timebase and channel 2 is to be displayed using the "B" timebase.
displayed using the "A" timebase and channel 2 is to be displayed using the "B" timebase.
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Types 1A1 and [[1A2]] were [[introduced in 1964|introduced together in 1964]], the former for high-end use,
Types 1A1 and [[1A2]] were [[introduced in 1964|introduced together in 1964]], the former for high-end use,
the latter as an upgrade/replacement for Type [[CA]].  Both remained available until
the latter as an upgrade/replacement for Type [[CA]].  Both remained available until
the classic plugin scope line was discontinued after 1974.
the classic plug-in scope line was discontinued after 1974.
 
* [http://manoman.sqhill.com/pdf/tek-1a1-early.pdf Tektronix 1A1 Manual (early) (PDF)]
* [http://manoman.sqhill.com/pdf/tek-1a1-late.pdf Tektronix 1A1 Manual (late) (PDF)]


<gallery>
<gallery>
Image:1a1_frontend.png|Early 1A1 front end
Image:1a1_frontend.png|Early 1A1 front end
</gallery>
</gallery>

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