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7000 Series plug-in interface: Difference between revisions
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* ''A/B Sweep'' − 500 mV<sub>p-p</sub>, negative-going copy of sweep signal from timebase, not affected by X position control or magnifier; Used for mainframe's Sawtooth Out, additionally fed to V plugins | * ''A/B Sweep'' − 500 mV<sub>p-p</sub>, negative-going copy of sweep signal from timebase, not affected by X position control or magnifier; Used for mainframe's Sawtooth Out, additionally fed to V plugins | ||
* ''Line Trigger'' − Approx. 1 V<sub>RMS</sub> mains-frequency signal from power supply (through transformer) | * ''Line Trigger'' − Approx. 1 V<sub>RMS</sub> mains-frequency signal from power supply (through transformer) | ||
* ''Trigger Holdoff'' − | * ''Trigger Holdoff'' − 0/+5 V, generated by time-base, high during holdoff time of time-base, used in mainframe for ALT sequencing. | ||
* ''Chop Drive'' − 0/+5 V; switches at one-half the rate of the VERTICAL MODE CHOP signal; high level selects channel 2, low level selects channel 1 of a dual-trace plug-in. | * ''Chop Drive'' − 0/+5 V; switches at one-half the rate of the VERTICAL MODE CHOP signal; high level selects channel 2, low level selects channel 1 of a dual-trace plug-in. | ||
* ''Chop Mode Sense'' − | * ''Chop Mode Sense'' − | ||
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* ''Intensity Limit'' − Switched to ground by timebase in slow sweep speeds (≥100 ms/Div), limits beam intensity to protect the CRT [[phosphor]] | * ''Intensity Limit'' − Switched to ground by timebase in slow sweep speeds (≥100 ms/Div), limits beam intensity to protect the CRT [[phosphor]] | ||
* ''Mainframe Channel Switch'', ''Mainframe Mode'' − 0/+5 V logic levels; plug-in output is displayed when MF Channel Switch ≠ MF Mode (XOR) | * ''Mainframe Channel Switch'', ''Mainframe Mode'' − 0/+5 V logic levels; plug-in output is displayed when MF Channel Switch ≠ MF Mode (XOR) | ||
* ''Sweep Inhibit'' | * ''Sweep Inhibit/Sweep Lockout'' - Mainframe injects current > 1mA to prevent time base from sweeping. Used for ALT sequencing. | ||
* ''Delay Gate'' − negative-going pulse starting at the end of the delay period, and lasting until the end of the sweep from the delaying timebase. +Gate Output on mainframe uses Delay Gate from H slot B when Delay Gate is selected. Grounded in amplifier plugins. | * ''Delay Gate'' − negative-going pulse starting at the end of the delay period, and lasting until the end of the sweep from the delaying timebase. +Gate Output on mainframe uses Delay Gate from H slot B when Delay Gate is selected. Grounded in amplifier plugins. | ||
* ''Single sweep ready'' − 0/+5 V, high when single sweep is ready | * ''Single sweep ready'' − 0/+5 V, high when single sweep is ready | ||