[amsat-bb] Re: G5400B calibration problems

[Joe Leikhim]

Tim; I believe there are two pots each for the azimuth and elevation 
meter adjustments. One pair are for the internal meters, the other pair 
for 0-5V to be used by the TrakBox (or similar) ADC. Make sure you 
turned the correct pair. However first I would make sure the internal 
7806 voltage regulator is producing 6 volts and does not oscillate or 
have noise on it. Dig out a DVM and scope to make sure. Those 
regulators, if not properly bypassed with a capacitor may oscillate.

-- 
Joe Leikhim


Leikhim and Associates

Communications Consultants

Oviedo, Florida

JLeikhim at Leikhim.com

407-982-0446

WWW.LEIKHIM.COM