Fluke 179 - Manual (Page 8)

Models 175, 177 & 179
Users Manual
4
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
900 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 MAX to step through the low (MIN), average
(AVG), and present readings.
⇒ To pause MIN MAX AVG recording without erasing stored
values, press HOLD. h is displayed.
To resume MIN MAX AVG recording, press HOLD again.
h
turns off.
⇒ To exit and erase stored readings, press MIN MAX for 1
second or turn the rotary switch.
Display HOLD and AutoHOLD Modes
XW Warning
To avoid electric shock, do not use the Display HOLD or
AutoHOLD mode to determine if a circuit is live.
Unstable or noisy readings will not be captured.
In the Display HOLD mode, the Meter holds the reading on the
display.
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 Display HOLD. h lights.
⇒ Press HOLD again to activate AutoHOLD. Ah lights.
⇒ Press HOLD again to resume normal operation.
To resume normal operation at any time, press HOLD for 1
second or turn the rotary switch.
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, temperature (Model 179 only), capacitance, diode test.
Display Backlight (Model 177 and 179 Only)
Press S to toggle the backlight on and off. The backlight
automatically turns off after 2 minutes.