Service manual

160 PAUSE
170 CLEAR SCREEN
180 !
190
! Measure DC Isolation (HI to Chassis, HI to LO, HI to GU)
200 !
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 OUTPUT @Mux;"CLOS (@100:115,190:193)"
300 OUTPUT @Dmm;"TRIG SGL"
310 ENTER @Dmm;Value(I)
320 NEXT I
330 DISP " Press Continue to display measurement results "
340 PAUSE
350 CLEAR SCREEN
360 PRINT TABXY(1,1),"DC Isolation Tests "
370 PRINT TABXY(1,3),"HI to CHASSIS (Ohms)";Value(0)
380 PRINT TABXY(1,4),"HI to LO (Ohms) ";Value(1)
390 PRINT TABXY(1,5),"HI to GUARD (Ohms) ";Value(2)
400 END
Typical Result A typical result for an overload on all three measurements is :
DC Isolation Tests
HI to Chassis(Ohms) 1.E+38
HI to LO (Ohms) 1.E+38
HI to GUARD (Ohms) 1.E+38
36 Verification Tests Chapter 2