Fluke ScopeMeter 190-062 - Page 204

Fluke 190-062, -102, -104, -202, -204, -502, -504
Service Manual

Input B Trigger Sensitivity Test
3URFHHGDVIROORZVWRWHVWWKH,QSXW%WULJJHUVHQVLWLYLW\
 &RQQHFWWKH7HVW7RROWRWKH$DVVKRZQLQ)LJXUH
NORMAL
SCOPE
FLUKE 5502A CALIBRATOR
PM9091
ADC
B
USE 50 OHM
TERMINATION
AB
METER
PM9091
2 CHANN. + METER
4 CHANNELS
50 OHM e.g. PM9585 or
TRM50
For 190-502 and -504
use only TRM50!
50 OHM e.g. PM9585 or
TRM50
SHUIYHUHHSV
Figure 4-8. 5502A Scope Output to Test Tool Input B
 5HVHWWKH7HVW7RROWRVHOHFWWKH7HVW7RROVHWXS
 3UHVV
B
WRWXUQ,QSXW%RQ
 3UHVV
TRIGGER
DQGXVH
F1
WRVHOHFW,QSXW%DVWULJJHUVRXUFH
 8VH
mV
RANGE
DQG
V
RANGE
WRFKDQJHWKHVHQVLWLYLW\UDQJHWRVHOHFWPDQXDO
VHQVLWLYLW\UDQJLQJDQGORFNWKH,QSXW%VHQVLWLYLW\UDQJHRQ9GLY
 8VH
TIMEsns
WRVHOHFWWKHWLPHEDVHOLVWHGLQ7DEOH
 6HWWKH$WRVRXUFHWKHOHYHOHGVLQHZDYHJLYHQLQWKHILUVWURZRI
7DEOH
 $GMXVWWKH$RXWSXWYROWDJHXQWLOWKHGLVSOD\HGWUDFHKDVWKHDPSOLWXGH
LQGLFDWHGXQGHUWKHDSSURSULDWHFROXPQRI7DEOH
 9HULI\WKDWWKHVLJQDOLVZHOOWULJJHUHG
,IQRWSUHVV
TRIGGER
DQGXVH
F3
WRHQDEOH IRUPDQXDO7ULJJHU
/HYHODGMXVWPHQW$GMXVWWKHWULJJHUOHYHODQGYHULI\WKDWWKHVLJQDOZLOOEH
WULJJHUHGQRZ7KHWULJJHULFRQ
LQGLFDWHVWKHWULJJHUOHYHO
&RQWLQXHWKURXJKWKHWHVWSRLQWV
:KHQ\RXDUHILQLVKHGVHWWKH$WR6WDQGE\