Backlight Brightness Setting; Power-On Parameter Setting; Buzzer Switch Setting; Basic Performance Indicators - East Tester ET1090 User Manual

4.2.18 Power-on Parameter Setting

Step 1: Turn on the instrument to enter the interface of measurement display, and press the
key to enter the Interface of System Setting。
Step 2: Move the cursor to the "Power-on Setting " via the up and down direction keys, and
then switch the "Power-on Setting " (default value, previous value) through the left and right
direction keys.

4.2.19 Buzzer Switch Setting

Step 1: Turn on the instrument to enter the interface of measurement display, and press the
key to enter the Interface of System Setting.
Step 2: Move the cursor to the "buzzer" via the left and right direction keys, and then switch
the buzzer switch (ON and OFF) through the up and down direction keys.
The selection range for the system setting parameters is as shown in the table below.
System Language
Brightness Adjustment
Power-on Setting
Buzzer

5 Basic Performance Indicators

5.1 Measurement Parameter

(1) Main parameter: L: inductance; C: capacitance; R: resistance; Z: impedance.
(2) Secondary parameter: X: reactance; D: loss; Q: quality factor; θ: impedance angle ESR: series
equivalent resistance.
(3) Measurement Parameter combination: the combination of main parameter and any secondary
parameter

5.2 Equivalent Mode

SER: series connection; PAR: parallel connection.
The actual inductance, capacitance and resistance are not the ideal pure reactance or
resistance elements, but the complex impedance elements in series or parallel form; this
instrument calculates the required value according to the series or parallel equivalent circuit with
different equivalent circuit obtaining different results. The two equivalent circuits can be
converted through the formula listed in the table Equivalent Circuit Conversion. Q and D are the
same regardless of what equivalent mode.
Series/parallel Circuit Model
The circuit models and formulas of the six series and parallel equivalent circuits are
described below: capacitance, inductance and resistance. The formula contains all the types of first
measurement and second measurement.
Chinese, English
30%, 50%, 70%, 100%
Default value, previous value
OFF, ON
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