HP WaterSkis E1312A, WaterSkis E1412A Example Disable Autozero, Example Query the Autozero Mode

Example Query the Resolution

VOLT:DC:RES 1E-03	Set resolution to 1 mV.
VOLT:DC:RES?	Query multimeter to return the present resolution.
enter statement	Enter value into computer.

ZERO:AUTO

[SENSe:]ZERO:AUTO <mode> enables or disables the autozero mode. Autozero applies to dc voltage, dc current and 2-wire ohms measurements only. 4-wire ohms and dc voltage ratio measurements automatically enable the autozero mode.

Parameters

		Parameter Name	Parameter Type	Range of Values	Default Units
		<mode>	boolean	OFF0ON1ONCE	none
Comments	• You can substitute decimal values for the OFF (“ 0”) and ON (“ 1”) parameters.

•The ON parameter enables autozero. This is the default parameter which causes the multimeter to internally disconnect the input signal following each measurement and make a zero measurement. The zero reading is subtracted from the input signal reading to prevent offset voltages present on the multimeter’s input circuitry from affecting measurement accuracy.

•The OFF parameter disables autozero. In this mode the multimeter takes one zero measurement and subtracts it from all subsequent input signal measurements prior to a change in function, range or integration time. A new zero measurement is made following a change in function, range or integration time. This mode increases measurement speed because a zero measurement is not made for each input signal measurement.

•Autozero ONCE issues an immediate zero measurement and can be used to get an update on the zero measurement for a specific input signal measurement. This helps to increase measurement time since you update the zero reading without making zero measurements for every measurement.

•*RST Condition: ZERO:AUTO ON (enables autozero mode)

Example Disable Autozero

ZERO:AUTO OFF Autozero disabled.

ZERO:AUTO?

[SENSe:]ZERO:AUTO? queries the autozero mode. Returns one of the following responses to the output buffer:

•“ 0” ( OFF or ONCE) if autozero is disabled or set for one time.

•“ 1” ON if autozero is enabled.

Example Query the Autozero Mode

ZERO:AUTO?	Queries the autozero mode.
enter statement	Enter response into computer.

152 Multimeter Command Reference Chapter 3