User Manual

LCR-8000 Series User Manual

Setting measurement level/ALC/RO

LCR-8200 Series test signal voltage/current level can be set as the

effective value (RMS value) of a sine wave of the test frequency

from the unit’s internal oscillator. The voltage range is 10mV-

2Vrms and current range is 100uA-20mArms. 2Vrms can only be

used at <= 1MHz.

The ALC (automatic level control) feature adjusts the voltage across

the DUT or the current through the DUT to match the

voltage/current level setting. Using this feature, you can try to

ensure a constant signal level (voltage or current) is applied to the

DUT.

In situations when the actual measuring Vac or Iac goes beyond the

extent that the ALC can regulate, a warning message, “ALC unable

to regulate”, will be shown at the bottom of the screen.

An asterisk will be shown beside the LEVEL V or A unit when the

ALC is turned on.

The RO (output impedance) can be set to 25Ω or 100Ω.

The varied signal source output impedance will lead to the varied

current or the difference of measuring value. If selecting <25Ω>,

then the voltage range is 10mV~1Vrms and the current range is

400uA~40mArms. If it needs to compare test results with Keysight

select 100Ω.