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PreCise 111 Construction Manual

Gm & em tube tester

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Summary of Contents for PreCise 111

  • Page 15 Calibration Instructions – Preliminary Tests and Plate Bridge Balance You have now completed the wiring of your Model 111. A few more tests and adjustments and the instrument may become part of your laboratory. WIRING CHECK A separate chart lists the number of wires and parts going to each switch and tube socket. Experience has shown that miswiring is the most common cause of trouble.
  • Page 16 The same note applies to this adjustment as applied to the 6L6, regarding the use of an AC Ammeter. You have now completed the calibration of your Model 111. Slip U type Speed Nut (#117) over hole #2, DIAGRAM 9, with concave side up.