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160 PAUSE
170 CLEAR SCREEN
180 !
190
200 !
! Measure DC Isolation (HI to Chassis, HI to LO, HI to GU)
210 OUTPUT @Mux;"*RST"
220 FOR I=0 TO 2
230 PRINT TABXY(1,1),"DC Isolation HI to ";Conn$(I);" Measurements
"
240 PRINT TABXY(1,3),"1. Connect DMM INPUT HI lead to COMMON
HI"
250 PRINT TABXY(1,4),"2. Connect DMM INPUT LO to ";Conn$(I+3)
260 DISP " Press Continue when connections are complete "
270 PAUSE
280 CLEAR SCREEN
290
300
OUTPUT @Mux;"CLOS (@100:115,190:193)"
OUTPUT @Dmm;"TRIG SGL"
310 ENTER @Dmm;Value(I)
320 NEXT I
Typical Result
330
340
350
360
DISP " Press Continue to display measurement results "
PAUSE
CLEAR SCREEN
PRINT TABXY(1,1),"DC Isolation Tests "
370
380
390
400
PRINT TABXY(1,3),"HI to CHASSIS (Ohms)";Value(0)
PRINT TABXY(1,4),"HI to LO (Ohms) ";Value(1)
PRINT TABXY(1,5),"HI to GUARD (Ohms) ";Value(2)
END
A typical result for an overload on all three measurements is :
DC Isolation Tests
HI to Chassis(Ohms)
HI to LO (Ohms)
HI to GUARD (Ohms)
36 Verification Tests
1.E+38
1.E+38
1.E+38
Chapter 2