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7000 Series plug-in interface: Difference between revisions
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| 35 || Force readout || Plugin mode | | 35 || Force readout || Plugin mode ''[note 7]'' | ||
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| 36 || n.c. || n.c. | | 36 || n.c. || n.c. | ||
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===Description of signals=== | ===Description of signals=== | ||
* ''Sweep Gate'' − 0/+5 V, high while sweep is running (beam unblanking); +Gate Output on mainframe uses Sweep Gate from H slot A when A Gate is selected, and from H slot B when B is selected | * ''Sweep Gate'' − 0/+5 V, high while sweep is running (beam unblanking), connected to +5 in amplifier plugins; +Gate Output on mainframe uses Sweep Gate from H slot A when A Gate is selected, and from H slot B when B is selected | ||
* ''Delay Mode Control'' − Output on delaying timebase in horizontal slot A, connected to input on delayed timebase in horizontal slot B. >+3 V disables auto sweep in delayed timebase; 0 V enables independent timebase function. | * ''Delay Mode Control'' − Output on delaying timebase in horizontal slot A, connected to input on delayed timebase in horizontal slot B. >+3 V disables auto sweep in delayed timebase; 0 V enables independent timebase function. Grounded in amplifier 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 | * ''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) | ||
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* ''Mainframe Channel Switch'', ''Mainframe Mode'' − 0/+5 V; plug-in output is displayed when MF Channel Switch <> MF Mode | * ''Mainframe Channel Switch'', ''Mainframe Mode'' − 0/+5 V; plug-in output is displayed when MF Channel Switch <> MF Mode | ||
* ''Sweep Inhibit'' − | * ''Sweep Inhibit'' − | ||
* ''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. | * ''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 | ||
* ''X comp. inhibit'' − Connected to ground in amplifiers, switched to ground by timebase set to amplifier (X-Y) mode to enable X-Y delay compensation in scopes with that function ([[7904|7904 Opt.2]], [[7104|7104 Opt.2]]) | * ''X comp. inhibit'' − Connected to ground in amplifiers, switched to ground by timebase set to amplifier (X-Y) mode to enable X-Y delay compensation in scopes with that function ([[7904|7904 Opt.2]], [[7104|7104 Opt.2]]) | ||
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''[note 6]'' A22 = Busy output from [[7D12]], [[7D15]], B22 = /Hold input to 7D12, 7D15; no corresponding mainframe connections known | ''[note 6]'' A22 = Busy output from [[7D12]], [[7D15]], B22 = /Hold input to 7D12, 7D15; no corresponding mainframe connections known | ||
''[note 7]'' connected to +5 V in [[7T11]] | |||
==Links== | ==Links== | ||
* [[Media:Introduction to the 7000 Series Switching and Logic Circuits (Ken Parker, 1970).pdf| Introduction to the 7000 Series Switching and Logic Circuits (Ken Parker, 1970)]] (PDF,OCR,1MB) | |||
* [https://archive.org/details/tektronix_7000_backplane_Pin_Out Kahrs, ''Interfacing to the Tektronix 7000 series''] | * [https://archive.org/details/tektronix_7000_backplane_Pin_Out Kahrs, ''Interfacing to the Tektronix 7000 series''] | ||