Fluke 77 Series IV - Advanced Recording and Holding Features; MIN MAX AVG Recording Mode; AutoHOLD Mode Operation

Model 77 Series IV
Users Manual
MIN MAX AVG Recording Mode
The MIN MAX AVG recording mode captures the minimum and
maximum input values, and calculates a running average of all
readings. When a new high or low is detected, the Meter beeps.
Note
For dc functions, accuracy is the specified accuracy of the
measurement function
± 12 counts for changes longer than
350 ms in duration.
For ac functions, accuracy is the specified accuracy of the
measurement function
± 40 counts for changes longer than
350 ms in duration.
To use MIN MAX AVG recording:
•
Make sure that the Meter is in the desired measurement
function and range. (Autoranging is disabled in the MIN MAX
AVG mode.)
• Press MIN MAX
to activate MIN MAX AVG mode.
 and
MAX light, and the highest reading detected since
entering MIN MAX AVG is displayed.
• Press MIN MA
X to step through the low
(MIN), average (AVG),
and present readings.
• To pause MIN MAX AVG recording wi
thout erasing stored
values, press HOLD. 
is displayed.
• To resume MIN MAX AVG recording, press HOLD again.
 turns off.
• To exit and erase stored readings, press MIN MAX for 1 second
or turn the rotary
switch.
AutoHOLD Modes
XWWarning
To avoid electric shock, do not use the AutoHOLD mode
to determine if a circuit is live. Unstable or noisy
readings will not be captured.
In the AutoHOLD mode, the Meter holds the reading on the display
until it detects a new stable reading. Then the Meter beeps, and
displays the new reading.
•
Press HOLD to activate AutoHOLD.  lights.
• Press HOLD again or turn the rotary
sw
itch to resume normal
operation.
YELLOW Button
Press the yellow button to select alternate measurement functions
on a rotary switch setting, e.g., to select DC mA, DC A, Hz,
capacitance, or diode test.
Display Backlight
Press  to toggle the backlight on and off. The backlight
automatically turns off after 2 minutes.