Fluke 87 - Using Display Hold; Using Autohold

Model 87 & 89 Series IV
Users Manual
2-18
Using Display Hold
Press Q to enter the Display Hold mode and freeze
the present reading and its time stamp. New readings now
appear in the secondary display. See Figure 2-6. To exit
Display Hold mode, press Q again.
In the MIN MAX mode, Display Hold functions like a
toggle, interrupting and resuming the MIN MAX
operations.
With Model 89, you cannot use Display Hold while logging
data. Model 89 allows you to save the frozen reading to
memory by pressing O R (SAVE).
AutoHOLD
tc040f.eps
Figure 2-6. Display Hold and AutoHOLD
Using AutoHOLD
WWarning
AutoHOLD mode does not capture unstable
or noisy readings. Do not use AutoHOLD
mode to determine that circuits are without
power.
To enter AutoHOLD, press OQ(AutoHOLD).
AutoHOLD mode freezes the present reading and its time
stamp. New readings now appear in the secondary
display. See Figure 2-6. When the meter detects a new,
stable reading (4% or more change from last stable
reading), it beeps and displays the new reading in the
primary display. You can also force a primary display
update by pressing Q.
If you remove the test leads (open the input), the meter
retains the last frozen primary display.
You cannot use AutoHOLD when MIN MAX is active. With
Model 89, you cannot initiate AutoHOLD while logging
data, but you can initiate logging when AutoHOLD is
active.
To exit AutoHOLD mode, press O Q (AutoHOLD)
again.