Keithley 2182

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2-10 Voltage and Temperature Measurements

SCPI programming - ACAL, Front Autozero, Autozero, LSYNC, and Low

Charge Injection

Table 2-2

SCPI commands - ACAL, Front Autozero, Autozero, LSYNC, and Low Charge Injection

Commands Description Default

For ACAL:

:CALibration CALibration Subsystem:

:UNPRotected

:ACALibration ACAL:

:INITiate Prepare 2182 for ACAL.

:STEP1 Perform full ACAL (100V and 10mV).

:STEP2 Perform low level ACAL (10mV only).

:DONE Exit ACAL (see Note).

:TEMPerature? Read the internal temperature (in °C) at the time

of the last ACAL.

:SENSe SENSe Subsystem:

:TEMPerature

:RTEMperature? Measure the present internal temperature (in ˚C).

For Front Autozero:

:SYSTem SYSTem Subsystem:

:FAZero [state] <b> Enable or disable Front Autozero. ON

For Autozero:

:SYSTem SYSTem Subsystem:

:AZERo [state] <b> Enable or disable Autozero. ON

For LYSNC:

:SYSTem SYSTem Subsystem:

:LSYNc [state] <b> Enable or disable line cycle synchronization. OFF

For Low Charge Injection:

:SENSe:VOLTage SENSe Subsystem:

:CHANnel2

:LQMode <b> Enable or disable Low Charge Injection Mode for

Channel 2 (see “Pumpout current (low charge injection

mode)” for details).

OFF

Note: After sending :DONE, the 2182 goes into the idle state. An INITiate command is

needed to trigger readings (see Program Example 1).

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