Difference between revisions of "1M1"

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The 1M1 is a letter series plug-in used for calibrating [[500-series scopes]].  Tektronix made identical units called TU-7 and 067-0521-00The 1M1 is used for calibrating the gain and checking the common mode rejection ratio of the mainframe.  500-series mainframes are supposed to have 10 div/volt differential response to signals from the plug-in, and zero response to common-mode signals from the plug-inWhy did this part go through three different namesAre there any other parts that have multiple names?
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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.)
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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.
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It does not have Type P's short operating life, because it does not use a [[mercury switch]].
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This instrument went through several names.  At its [[1964]] introduction, it was the TU-7.  Some early Tek-internal instruments for design, manufacturing, and calibration had TU (Test Unit) nomenclature(Other examples include the TU-?? Variac, the TU-?? dim-bulb fixture, and the TU-50 sine/square/pulse generator.)  In 1965 it was renamed Type 1M1 to fit into the letter-series nomenclature like its predecessor.  Later still, the 067- calibration fixture naming system took hold and it was rechristened 067-0521-00. The instrument was also revised once - more pulse frequencies - and the name upgraded to 067-0521-01.  It does not appear - under any name - in any Tek catalog I know of, but the 1964 catalog _does_ list a cousin: Type [[10/11M1]], for the Type [[647]] scope.
  
 
* [http://bama.edebris.com/manuals/tek/tu7 1M1 / TU-7 / 067-0521-00 manual on BAMA]
 
* [http://bama.edebris.com/manuals/tek/tu7 1M1 / TU-7 / 067-0521-00 manual on BAMA]

Revision as of 13:56, 16 May 2011

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.)

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 does not have Type P's short operating life, because it does not use a mercury switch.

This instrument went through several names. At its 1964 introduction, it was the TU-7. Some early Tek-internal instruments for design, manufacturing, and calibration had TU (Test Unit) nomenclature. (Other examples include the TU-?? Variac, the TU-?? dim-bulb fixture, and the TU-50 sine/square/pulse generator.) In 1965 it was renamed Type 1M1 to fit into the letter-series nomenclature like its predecessor. Later still, the 067- calibration fixture naming system took hold and it was rechristened 067-0521-00. The instrument was also revised once - more pulse frequencies - and the name upgraded to 067-0521-01. It does not appear - under any name - in any Tek catalog I know of, but the 1964 catalog _does_ list a cousin: Type 10/11M1, for the Type 647 scope.