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576: Difference between revisions
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The display is large at 10- x 10-cm with an internal, parallax-free graticule. Along the right side of the CRT is an alphanumeric readout which puts the important front panel settings where they can be photographed along with the displayed semiconductor curve. This display is a complex unit of fiber optic light-guides driven by incandescent lamps to provide alphabetic, numeric and Greek characters. Given the front panel settings, the display automatically calculates beta/DIV. The 576 was designed before the 7000-series, and by a different engineering group, or they might have shared information and technology to provide all of this as on-screen readout like the 7000-series, and for less money than the technology they used. Surprisingly, this fiber-optic unit has not proved to be the least bit troublesome, considering all of the incandescent lamps required to implement the design. Wise operators will keep the display illumination at a lower level to prolong lamp life. | The display is large at 10- x 10-cm with an internal, parallax-free graticule. Along the right side of the CRT is an alphanumeric readout which puts the important front panel settings where they can be photographed along with the displayed semiconductor curve. This display is a complex unit of fiber optic light-guides driven by incandescent lamps to provide alphabetic, numeric and Greek characters. Given the front panel settings, the display automatically calculates beta/DIV. The 576 was designed before the 7000-series, and by a different engineering group, or they might have shared information and technology to provide all of this as on-screen readout like the 7000-series, and for less money than the technology they used. Surprisingly, this fiber-optic unit has not proved to be the least bit troublesome, considering all of the incandescent lamps required to implement the design. Wise operators will keep the display illumination at a lower level to prolong lamp life. | ||
The interface connections to the accessory modules are made through the same style of blue robust Amphenol connectors as used with the plug-ins on the 500-series oscilloscope line. | |||
The collector measurement range is from 100na/DIV to 2a/DIV. Base voltage can be swept from zero to 1500 volts in four ranges. The three higher ranges require the safety cover to be closed. Because so many used 576s do not come with safety covers, most users defeat the safety interlock mechanically or electrically. If this is done, the operator should be especially cautious as the 576 is capable of producing lethal voltages and currents, up to 1500 volts at up to 100ma continuous. | The collector measurement range is from 100na/DIV to 2a/DIV. Base voltage can be swept from zero to 1500 volts in four ranges. The three higher ranges require the safety cover to be closed. Because so many used 576s do not come with safety covers, most users defeat the safety interlock mechanically or electrically. If this is done, the operator should be especially cautious as the 576 is capable of producing lethal voltages and currents, up to 1500 volts at up to 100ma continuous. | ||