Agilent Technologies 34401A manual Math Operation Commands

Chapter 4 Remote Interface Reference

Math Operation Commands

Math Operation Commands

See also “Math Operations,” starting on page 63 in chapter 3.

There are five math operations available, only one of which can be enabled at a time. Each math operation performs a mathematical operation on each reading or stores data on a series of readings.

The selected math operation remains in effect until you disable it, change functions, turn off the power, or perform a remote interface reset. The math operations use one or more internal registers. You can preset the values in some of the registers, while others hold the results of the math operation.

The following table shows the math/measurement function combinations allowed. Each “X” indicates an allowable combination. If you choose a math operation that is not allowed with the present measurement function, math is turned off. If you select a valid math operation and then change to one that is invalid, a “Settings conflict” error is generated over the remote interface. For null and dB measurements, you must turn on the math operation before writing to their math registers.

	DC V	AC V	DC I	AC I	Ω 2W	Ω 4W	Freq	Per	Cont Diode Ratio
Null	X	X	X	X	X	X	X	X
Min-Max	X	X	X	X	X	X	X	X	X
dB	X	X
dBm	X	X
Limit	X	X	X	X	X	X	X	X	X

CALCulate:FUNCtion {NULLDBDBMAVERageLIMit}

Select the math function. Only one function can be enabled at a time. The default function is null. [Stored in volatile memory]

CALCulate:FUNCtion?

Query the present math function. Returns NULL, DB, DBM, AVER, or LIM.

CALCulate:STATe {OFFON}

Disable or enable the selected math function. [Stored in volatile memory]

CALCulate:STATe?

Query the state of the math function. Returns “0” (OFF) or “1” (ON).

124