- 14 -
y
The default setting is LCR auto mode at test frequency 1kHz.
y
Battery condition is detected every second and displayed.
suggests battery capacity is full
suggests power is
low and needs to be replaced a new battery.
y
If the key functions, the buzzer beeps once when key is
pressed. If the key has no function, the buzzer beeps twice
when key is pressed.
Using adaptor as power supply,
Auto Power off function disables
automatically and “APO”
disappears.
y
Auto power off function is disabled automatically, when
using a 9V adaptor as the alternative power supply.
Using 9V- battery as power
supply, “APO” displays.
y
Auto power off function enables when using a 9V-battery as
power supply.
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2. CAL
y
This function enables the LCR meter’s internal parameters
and external connector residues to be calibrated to have
better and precise measurements.
y
To make better precision measurements on extremely high
or low impedance ranges of L,C,R, it is highly recommended
that do OPEN/SHORT calibration to reduce the parasitic
effect of the test fixture before measuring.
y
Note: Remove any leads or DUT ( device under test ) from
the meter during this procedure. If leaving them connected,
will add impedance to the circuit causing the calibration to
fail indicated by FAIL showing on the display.
Ex. Operation for open and
short calibration with TL-21
Ex. Operation for open and short
calibration with .TL-22
Open Cal.
Short Cal.
Open Cal.
Short Cal.
y
Connect TL-21 (or improved test leads applied to the
measurements) and press “
CAL
” key > 2 seconds to enter
the calibration mode
ĺ
OPEN ready
ĺ
OPEN calibration
ĺ
SHORT ready
ĺ
SHORT calibration. Follow below
procedure to complete the calibration.
y
When start the open or short calibration, it will have 30
seconds countdown shown on the display.