Fluke ScopeMeter 190-202 - Reversing the Polarity of the Displayed Waveform

Using the Scope and Meter
Acquiring Waveforms


Normal – RSWLPDOZDYHIRUP
XSGDWHUDWHDQG]RRPUDQJH
FRPELQDWLRQ
4
F4
([LWWKHPHQX
6HHDOVR7DEOHLQ&KDSWHU
Selecting AC-Coupling
$IWHUDUHVHWWKHWHVWWRROLVGFFRXSOHGVRWKDWDFDQGGF
YROWDJHVDSSHDURQWKHVFUHHQ
8VHDFFRXSOLQJZKHQ\RXZLVKWRREVHUYHDVPDOODF
VLJQDOWKDWULGHVRQDGFVLJQDO7RVHOHFWDFFRXSOLQJGR
WKHIROORZLQJ
1
A
'LVSOD\WKHINPUT ANH\ODEHOV
2
F2
+LJKOLJKWAC
2EVHUYHWKDWWKHERWWRPOHIWRIWKHVFUHHQGLVSOD\VWKH
DFFRXSOLQJLFRQ 
<RXFDQGHILQHKRZ$XWR6HWDIIHFWVWKLVVHWWLQJVHH
&KDSWHUµ&KDQJLQJWKH$XWR6HW2SWLRQV¶
Reversing the Polarity of the Displayed
Waveform
7RLQYHUWIRUH[DPSOHWKHLQSXW$ZDYHIRUPGRWKH
IROORZLQJ
1
A
'LVSOD\WKHINPUT A NH\ODEHOV
2
F4
2SHQWKHINPUT APHQX
3
ENTER
6HOHFWInvertedDQGDFFHSW
LQYHUWHGZDYHIRUPGLVSOD\
4
F4
([LWWKHPHQX
)RUH[DPSOHDQHJDWLYHJRLQJZDYHIRUPLVGLVSOD\HGDV
SRVLWLYHJRLQJZDYHIRUPZKLFKPD\SURYLGHDPRUH
PHDQLQJIXOYLHZ$QLQYHUWHGGLVSOD\LVLGHQWLILHGE\DQ
LQYHUVHGZDYHIRUPLGHQWLILHU

DWWKHULJKWRIWKH
ZDYHIRUPDQGLQWKHVWDWXVOLQHEHORZWKHZDYHIRUP