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Vintage dave (talk | contribs) (specs and history) |
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The Type 1A1 plug-in has two channels and a -3dB point of 50MHz. | The Type 1A1 plug-in has two channels and a -3dB point of 50MHz at 50mV/div, 28MHz at 5mV/div, | ||
the is sent by scopes on pin 7 of the plug-in connector. | 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. The 1A1 uses the "ALT SWEEP SLAVE PULSE" signal | |||
the 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. | ||
This is useful, for example, to view the IF and AF of a radio receiver at the same time. | 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]]. | |||
<gallery> | <gallery> | ||
Image:1a1_frontend.png|Early 1A1 front end | Image:1a1_frontend.png|Early 1A1 front end | ||
</gallery> | </gallery> |
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