Alphanumeric Displays And Parameter Indicators - Protek 9216A User Manual

mode is indicated by LEDs above the alphanumeric displays. The operation of each
mode can be explained as follows:
AUTO

measurement on the device. The selection is made according to the following
criteria:




R+Q

and the Q (quality factor) is displayed on the secondary parameter display. The R-
value is either the series or parallel equivalent resistance of the component under test.
The unit for R is , k, or M. The Q value is the dimensionless ratio of the
imaginary part of the component's impedance to its real part. If Q has a positive (+)
value, the reactive component of the device under test is inductive. If Q has a
negative () value, it is capacitive.
L+Q

component under test is displayed on the main parameter display units in units of µH,
mH, or H, and its dimensionless Q value is displayed on the secondary parameter
display.
C+D

component under test is displayed on the main parameter display in units of pF, nF,
or µF. On the secondary parameter display, the dimensionless ratio D  1/Q is given.
D is normally a small value for a good capacitor.
C+R

display and the equivalent resistance is displayed on the secondary parameter
display. The unit for resistance is  unless the k indicator LED is lit.

Alphanumeric Displays and Parameter Indicators

The two 5-digit (plus sign) LED
results, entered parameter values, and status messages. The left display gives the value
of the main parameter of the component under test (L, R, C) and the right display gives
the value of its secondary parameter (Q,D, R, %).
alphanumeric displays are various LEDs that, when lit, indicate something about the
measurement:
1
LED = light-emitting diode
In this mode, the meter automatically selects the most appropriate
If |Q| < 0.125, the meter selects the R+Q measurement mode.
If Q > +0.125, the meter selects the L+Q measurement mode.
If Q < 0.125 and the meter is in the series equivalent circuit mode, the C+R
measurement mode is selected.
If Q < 0.125 and the meter is in the parallel equivalent circuit mode, the C+D
measurement mode is selected.
In this mode, resistance is displayed on the main parameter display
In this mode, the series or parallel equivalent inductance value of a
In this mode, the series or parallel equivalent capacitance value of a
In this mode, the capacitance is displayed on the main parameter
1
-segmented alphanumeric displays provide measurement
Above and next to these two
9