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80 Series III
Users Manual
32
Touch Hold
®
Mode
WWarning
The Touch Hold mode will not capture
unstable or noisy readings. Do not use
Touch Hold mode to determine that circuits
are without power.
The Touch Hold mode captures the present reading on
the display. When a new, stable reading is detected, the
meter beeps and displays the new reading. To enter or
exit Touch Hold mode, press
I.
Relative Mode
Selecting relative mode ( C) causes the meter to
zero the display and store the present reading as the
reference for subsequent measurements. The meter is
locked into the range selected when you pressed
C. Press Cagain to exit this mode.
In relative mode, the reading shown is always the
difference between the present reading and the stored
reference value. For example, if the stored reference
value is 15.00 V and the present reading is 14.10 V, the
display shows -0.90 V.
On Model 87, the relative mode does not change the
operation of the analog display.
Zoom Mode (Models 83 and 85)
Selecting relative mode on a Model 83 or 85 meter
causes the bar graph to enter Zoom mode. In zoom
mode, the center of the graph represents zero and the
sensitivity of the bar graph increases by a factor of 10.
Measured values more negative than the stored
reference light segments to the left of center; values more
positive light segments to the right of center.