Fluke 189 - Manual (Page 36)

Model 187 & 189
Users Manual
2-22
Using HOLD with MIN MAX or FAST MN MX
You can enable the HOLD mode when in the MIN MAX
mode is by pressing
Q .
No further minimum, maximum, or average updates occur
while the HOLD mode is enabled.
Exit HOLD mode by pressing Q a second time.
Using Relative Mode (REL)
Selecting Relative mode ( D ) causes the meter to zero
the display and store the present reading as a reference
for subsequent measurements.
•
Press D once to select the Relative Mode. (The
meter enters manual range when you enter the
Relative Mode.)
The reference appears in the secondary display. The
difference between the reference and a new
measurement appears in the primary display. See
Figure 2-8.
•
Press D a second time to enter the REL% mode
and display the difference as
±
10 % of the reference
reading.
In REL%,
e
% appears on the display.
•
Press D a third time to exit the Relative Mode.
tc039f.eps
Figure 2-8. Relative Mode