ScopeMeter® Test Tool 190 Series II
Users Manual
Making Relative Meter Measurements
$UHODWLYHPHDVXUHPHQWGLVSOD\VWKHSUHVHQW
PHDVXUHPHQWUHVXOWUHODWLYHWRDGHILQHGUHIHUHQFHYDOXH
7KHIROORZLQJH[DPSOHVKRZVKRZWRSHUIRUPDUHODWLYH
YROWDJHPHDVXUHPHQW)LUVWREWDLQDUHIHUHQFHYDOXH
1
METER
'LVSOD\WKHMETER NH\ODEHOV
2 0HDVXUHDYROWDJHWREHXVHGDV
UHIHUHQFHYDOXH
3
F2
6HWRELATIVE WRONON LV
KLJKOLJKWHG7KLVVWRUHVWKH
UHIHUHQFHYDOXHDVUHIHUHQFHIRU
VXEVHTXHQWPHDVXUHPHQWV
2EVHUYHWKHADJUST REFERENCE
VRIWNH\)WKDWHQDEOHV\RXWR
DGMXVWWKHUHIHUHQFHYDOXHVHH
VWHSEHORZ
4 0HDVXUHWKHYROWDJHWREH
FRPSDUHGWRWKHUHIHUHQFH
1RZWKHODUJHUHDGLQJLVWKHDFWXDOLQSXWYDOXHPLQXVWKH
VWRUHGUHIHUHQFHYDOXH7KHDFWXDOLQSXWYDOXHLVGLVSOD\HG
EHORZWKHODUJHUHDGLQJ$&78$/[[[[VHH)LJXUH
Figure 13. Making a Relative Measurement
<RXFDQXVHWKLVIHDWXUHZKHQIRUH[DPSOH\RXQHHGWR
PRQLWRULQSXWDFWLYLW\YROWDJHWHPSHUDWXUHLQUHODWLRQWRD
NQRZQJRRGYDOXH