Fluke ScopeMeter 123, Service Manual, Page: 36 / 96

Fluke 123/124/125
Service Manual
3-6
ST7968.WMF
Figure 3-2. Menu item selection
If an item is selected, it is marked by . Not selected items are marked by
□
If a selected
item is highlighted, an then is pressed, the item remains selected.
You can also navigate through the menu using . To conform the highlighted item you
must press .
Before performing the Input A and Input B tests, the test tool must be set in a defined state,
by performing a RESET.
Proceed as follows to reset the test tool:
•
Press to turn the test tool off.
•
Press and hold .
•
Press and release to turn the test tool on.
Wait until the test tool has beeped twice , and then release . When the test tool has
beeped twice, the RESET was successful.
For most tests, you must turn Input B on. Input A is always on.
Proceed as follows to turn Input B on:
•
Press to open the Meter B menu.
•
Using select
INPUT B: □ ON
.
•
Press to confirm the selection; the
□
mark changes to
■
. The active setting from
the next item group will be highlighted (for example
Vac
), and maintained after
leaving the menu.
•
Press to exit the menu.
3.5.1 Input A and B Base Line Jump Test
Proceed as follows to check the Input A and Input B base line jump: