Measurement Keys And Indicators - Promax MZ-805 Manual De Instrucciones

In normal use the left—hand 5—digit display shows the value of the major
parameter (L, C or R) and the right—hand display shows the value of the minor
parameter (Q, D or R). The parameters being displayed are indicated above
their respective numeric values and the units of the parameter are shown to the
right of the value itself. A display test which lights all the indicators can be
carried out by holding down any key while the instrument is switched on.
Basic measurement accuracy is 0.1% and, for the impedance range for
which this accuracy is guaranteed (see Specification) the instrument will
autorange to give typically between 5,000 and 50,000 counts of display
resolution. If the measured value is outside the range within which 0.1%
accuracy is guaranteed (at the measurement frequency selected) the units
indicator (k Ω , pF, etc.) will flash to show this. If the frequency indicator is also
flashing, changing the frequency range may bring the component being
measured within the range of the instruments 0.1% accuracy specification. For
example, measuring 680pF at the default Auto frequency of 1kHz will cause
both the units indicator (pF) and frequency range lamp to flash; changing the
frequency to 10kHz brings 680pF within the instrument's 0.1% specification and
both lamps will stop flashing.
During the set—up and use of the sort facility the displays have other
uses; these are fully explained in the Component Sorting section.

Measurement Keys and Indicators

Frequency
Pressing the Freq key sets the test frequency for the measurement to
100/120Hz, 1kHz or 10kHz.
Note: For a 50Hz supply the lowest test frequency will generally be 100Hz, for
a 60Hz supply it will generally be 120Hz, see Installation section.
Pressing the key changes the frequency from 100/120Hz to 1kHz to
10kHz and back to 100/120Hz. The lamp indicates the setting being used. If
the lamp flashes it is a warning that another frequency may give a more
accurate measurement for a component of that type and value.
Mode
Selects either series or parallel mode equivalent circuit values to be
displayed, see Measurement Principles section.
warning that the other mode is the more usual selection for a component of that
type and value. If Auto mode has been selected the Mode cannot be changed
without first selecting L, C or R mode.
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MZ-805 L/C/R meter
If the lamp flashes it is a
August 2002