Fluke 43B - Page 66

43B
Service Manual
4-14
• Press to select Input 1 RANGE.
• Press
to select 1V/d.
• Press to select a timebase of 10 ms/d.
• Press
to leave RANGE 1.
• Press
to select TRIGGER.
• Using
set the trigger level to +2 divisions from the screen center. For
positive slope triggering, the trigger level is the top of the trigger icon (
).
4. Set the 5500A to source 0.4V DC.
• Press
to select menu SCOPE SETUP.
• Press
to highlight Time base.
• Press
.to select the TIME BASE menu.
• Press
to select SINGLE.
• Press
to confirm;  mark changes to ■.
• Press
to highlight Trigger slope.
• Press
to select the TRIGGER SLOPE menu.
• Press
to highlight positive trigger ( ).
• Press
to confirm;  changes to ■.
• Press
to return to SCOPE.
5. Verify that no trace is shown on the test tool display, and that at the upper right
corner of the display HOLD is not shown. If the display shows HOLD then press
. Hold should disappear and the test tool is re-armed for a trigger.
6. Increase the 5500A voltage slowly in 0.1V steps, using the 5500A EDIT FIELD
function, until the test tool is triggered, and the traces are shown.
7. Verify that the 5500A voltage is between +1.5V and +2.5V when the test tool is
triggered.
To repeat the test set the 5500A to .4V and start at step 5.
8. Set the 5500A to Standby.
9. Press
to clear the display.
10. Select negative TRIGGER SLOPE.
• Press
to select menu SCOPE SETUP.
• Press
to highlight Trigger slope.
• Press
to select the TRIGGER SLOPE menu.
• Press
to highlight negative trigger ( ).
• Press
to confirm;  mark changes to ■.
• Press
to return to SCOPE.