JLH-831 calibration instructions
The links below contain the instructions for calibration of the JLH-831 dual channel
octave and semitone voltage switcher. You will find the assembly instructions in a
separate document. See the instructions page. You may also want to check out the
theory of operations document to better understand the circuit. Please e-mail me
There are three basic methods of calibration.
Calibration instructions for these first two methods are listed below. You need only one.
If you choose the tuner method, down load the ear method to see which trimmers to
operate. However, I did not write instructions for using a tuner. I figure you can figure
that out on your own.
MS Word - Instructions to calibrate JLH-831 mostly by ear
Text only - Instructions to calibrate JLH-831 mostly by ear
OR
MS Word - Instructions to calibrate JLH-831 by voltmeter