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7904: Difference between revisions
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===7904A differences=== | ===7904A differences=== | ||
The 7904 had an elaborate 5-decade built-in calibrator with variable rate that was dropped from the 7904A. In the 7904A, The Control Illumination switch moved to the rear panel, and the [[7000 series readout system|readout system]] gained a pulsed mode in which it is synchronized with the sweep instead of interrupting the display at random times. This pulsed mode is not compatible with all time base plug-ins (see manual p. 1-12). | The 7904 had an elaborate 5-decade built-in calibrator with variable rate that was dropped from the 7904A. In the 7904A, The Control Illumination switch moved to the rear panel, and the [[7000 series readout system|readout system]] gained a pulsed mode in which it is synchronized with the sweep instead of interrupting the display at random times. This pulsed mode is not compatible with all time base plug-ins (see manual p. 1-12). | ||
===Options=== | |||
<div style="column-count:4;-moz-column-count:4;-webkit-column-count:4"> | |||
* Opt.2: X-Y delay compensation network | |||
* Opt.3: Extra EMI shielding | |||
* Opt.4: Maximum-brightness CRT with reduced area | |||
* Opt.78: P11 phosphor | |||
</div> | |||
==Operation== | ==Operation== | ||