User Manual

6 LCR200-EU-EN-V1.2 7/11
Open/Short Calibration
In order to improve the accuracy for high/low impedance measurements , it is recommended to do
OPEN/SHORT calibration mode before the measurement. This removes stray impedances in test
leads or fixtures.
1. Press the CAL button for greater than 2 seconds to start the open/short calibration procedure
:
2. The “CAL” icon and “OPEn” appear in the display
3. With no component connected, press the CAL button. The display will count down from 30
and either “PASS” or “FAIL” will appear in the display.
4. Press the CAL button and “Srt” will appear.
5. Short the input and press the CAL button. The display will count down from 30 and either
“PASS” or “FAIL” will appear in the display.
6. Press the CAL button to exit the cal mode.
7. If PASS appeared for both the OPEN and SHORT modes, the calibration data will be saved
to external EEPROM.
8. If FAIL appeared for either calibration, the impedance was too large to zero out and the data
is not stored.
Backlight
Press the
backlight button to turn the backlight on. Press again to turn it off.
Guard Terminal
The guard is used to improve noise immunity and reduce stray impedances. The optional test
fixtures utilize the guard feature.
Auto Power Off
In order to extend battery life﹐ APO will turn the meter off after 5 minutes of inactivity (no button
is pressed). The meter will alarm (beep) three times before the power is shut off. Press any button
to reset the APO and continue using the meter.
RS232 output
Press the  button to enable the RS232 port. “RS232” will appear in the display. When enabled,
the displayed data can be sent to a pc..
AC Adaptor
The meter can be powered from an AC adaptor (9VDC, 1A). When an AC adaptor is used, APO is
disabled.