Tektronix 7B80 Instruction Manual page 10

Operating Instructions-7B80
TRIGGERING
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LEVEL Control-Selects a point on the trigger signal where triggering occurs.
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SLOPE Switch-Permits sweep t o be triggered on negative or positiveqoing portions of the trigger signal.
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READY Indicator-Illuminates when sweep circuit is armed (SINGLE SWEEP Mode).
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TRIG'D Indicator-Illuminates when the display is triggered.
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MODE Pushbunons-Selects the operating mode of the triggering circuit.
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COUPLING PushbunonrSelects the method of coupling the trigger signal t o triggering circuit.
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SOURCE Pushbunons-Selects source of the trigger signal.
SWEEP
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POSITION Control-Provides horizontal positioning.
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FINE Control-Provides precise horizontal positioning.
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MAG Pushbunon-Selects magnified X I 0 or unmagnified sweep.
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WOLD OFF Control-Permits hold o f f period t o be varied t o improve trigger stability on repetitive complex waveforms.
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TlMElDlV Selector-Selects the sweep rate of the weep generator.
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VARIABLE Control and CAL Switch--Selects calibrated or uncalibrated sweep rates. Uncalibrated sweep rates can
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ba continuously reduced t o at least the sweep rate of the next dower position.
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SWP C A L Adjustment-Compensates for basic timing changes due t o the differences i n sensitivity of mainframes
EXTERNAL TRIGGER INPUT
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EXT TRlG ATTENUATOR-Selects attenuation fector for external trigger signals.
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EXT TRlG I N Connector-Connector (BNC type) provides input for external trigger signals.
Fig. 1-2. Front-panel controls, connectors, and indicators (cont.).
Scans by ArtekMedia O 2006