Triplett 9045 User Manual

Page 19

Triplett Model 9045

7.1.5 REL Mode
Press the

(REL) button to make subsequent readings RELative to the

present reading, or to “zero out” any zero error. The button is usually used
to zero out a residual resistance reading on the 600Ω range, or the residual
stray capacitance reading on the 40nF range. This button does not work in
all ranges or modes. For example, it doesn’t work in the Frequency, Diode
Test, or Continuity modes.

7.1.6 MAX / MIN Mode
The 9045 contains a convenient memory that remembers the Maximum and
Minimum values measured by the meter. The feature can be used for a few
minutes or several hours to memorize the Maximum and Minimum values
measured by the meter.

To activate the feature, press the MAX / MIN button when the meter is in the
desired range. The MAX annunciator will appear in the display, and the Auto
Ranging and Auto Power Off features will deactivate. When the MAX annun-
ciator is displayed, the meter is showing the maximum or “peak” value in its
memory. Another press of the MAX / MIN button will turn off the MAX an-
nunciator and turn on the MIN annunciator. Now the minimum or “valley”
value in the meter’s memory is being displayed. Subsequent presses of the
button will toggle the meter’s display between the MAX and MIN display
modes.

Notes:
This feature does not work in all measurement modes. For example, it does not
work in the Frequency, Continuity, Diode Test, and Capacitance modes.
When using MAX / MIN, the meter is in a manual ranging mode… i.e. the meter
will not autorange if the signal being measured is above or below the range se-
lected when the MAX / MIN button was pressed.

To return to the normal measurement mode, press and hold the MAX / MIN button
until the meter beeps and the MAX and MIN annunciators turn off.

7.1.7 RANGE Selection
After a measurement mode is chosen by using the rotary FUNCTION switch
and the SELECT button (if necessary), the RANGE may be chosen manually
or automatically. That is, the user has the option to allow the meter to select
its measurement range, or the user may manually select the measurement
range.

To allow the meter to select the range, the user need do nothing . . . its
automatic. The Auto annunciator informs the user that the meter will
choose the appropriate measurement range.