Impedance Test - Somatics THYMATRON System IV Service Manual

dial set
5
15
25
35
45
55
65
75
85
95
table 3.1
B) Connect oscilloscope across the dummy load. Set vertical deflection to 50 v/div and
horizontal deflection to 1.0 sec/div. Set proper trigger. Set PERCENT ENERGY dial to
100% and push the TREAT button. The duration of the stimulus should be 8 seconds as
in fig. 3.6.
3.7

IMPEDANCE TEST

Connect a variable resistor box to the ECT stimulus cable. Set on zero ohms and push the
impedance test button the readout should be 0_ ±100_. Repeat for 1000_ and 2000_. At
impedances higher than 3000 _ the display will read >3000 and blink.
CAUTION: DO NOT PRESS THE TREAT BUTTON DURING THIS TEST. THE
LARGE POWER OUTPUT COULD DESTROY YOUR RESISTANCE BOX.
SOMATICS, LLC
read dial set
28 10
84 20
140 30
196 40
252 50
308 60
364 70
420 80
476 90
532 100
fig. 3.6
13
read
56
112
168
224
280
336
392
448
504
560
REV: 3.1 09/15/2015