1A1: Difference between revisions
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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 | 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> | ||
Revision as of 19:52, 6 May 2011
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. Early production used a Nuvistor front-end, and 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 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. This is useful, for example, to view the IF and AF of a radio receiver at the same time.
Types 1A1 and 1A2 were introduced together in 1964, the former for high-end use, the latter as an upgrade/replacement for Type CA. Both remained available until the classic plug-in scope line was discontinued after 1974.
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Early 1A1 front end
