Test Current Output - Somatics THYMATRON System IV Service Manual

3.3

TEST CURRENT OUTPUT

Set oscilloscope vertical deflection to 50V/div (5V/div when using the divider), horizontal
deflection to 0.5 msec/div. Set trigger for positive phase. Turn power on. Make sure the
system is in default setting. The program should be in LOW 0.5. Set PERCENT ENERGY
dial to 100% and push TREAT button. Observe wave shape as in figure 3.3. Peak voltage
reading should be 180 Volts ±7.5% which corresponds to 900 ma at 200 ohms. For other
loads wave shapes see fig.3.4
fig 3.3
SOMATICS, LLC REV: 3.1 09/15/2015
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