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The [[TU-7]]/1M1/[[067-0521-00]] is a letter series plug-in used for calibrating [[500-series scopes]]. It is a multifunction replacement for Type [[P]]. It's used for calibrating the mainframe's step response and gain, and checking dual-trace operation, common mode rejection, and power supply regulation. (500-series mainframes are designed to have 10 div/volt response to differential signals from the plug-in, and zero response to common-mode signals.) | The [[TU-7]]/1M1/[[067-0521-00]] is a letter series plug-in used for calibrating [[500-series scopes]]. It is a multifunction replacement for the Type [[P]] Pulser, the [[TU-2]] Test Load, and the [[EP-53]] Gain Set Adaptor. It's used for calibrating the mainframe's step response and gain, and checking dual-trace operation, common mode rejection, and power supply regulation. (500-series mainframes are designed to have 10 div/volt response to differential signals from the plug-in, and zero response to common-mode signals.) | ||
It contains a transistor multivibrator, whose output is sharpened through Tek-made Gallium-Arsenide diodes (later production used silicon), a dual-trace circuit using [[12AT7]] and [[6AL5]] tubes, and various load resistors. | It contains a transistor multivibrator, whose output is sharpened through Tek-made Gallium-Arsenide diodes (later production used silicon), a dual-trace circuit using [[12AT7]] and [[6AL5]] tubes, and various load resistors. | ||