Fluke 80 Series III User Manual page 15

Button Function
b
Any switch
Model 87:
position
yellow button
b
Models 83,
85: gray
button
T
Continuity
ReE
MIN MAX
recording
Power-up
C
Any switch
(Relative position
mode)
Power-up
F
Any switch
position
Power-up
Table 4. Pushbuttons (cont)
Turns the backlight on and off.
For Model 87, hold the yellow button down for one second to enter the
4-1/2 digit mode. To return to the 3-1/2 digit mode, hold the button down
only until all display segments turn on (about one second).
Turns the continuity beeper on and off.
On Model 87, switches between 250 s and 100 ms or 1 s response
times.
Disables the beeper for all functions.
Stores the present reading as a reference for subsequent readings. The
display is zeroed, and the stored reading is subtracted from all
subsequent readings.
For Models 83 and 85, enables zoom mode for the bar graph.
Starts the frequency counter.
Press again to enter duty cycle mode.
Provides >4000 M input impedance for the 400 mV dc range.
Button Function
Your Meter's Features
Page
NA
29
14
30
NA
32
32
25
27
NA
7