To Turn Off the Comma Separator

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Chapter 2 Front-Panel Menu Operation

To Make Null (Relative) Measurements

To Make Null (Relative) Measurements

Each null measurement, also called relative, is the difference between a stored null value and the input signal.

Result = reading – null value

To read / edit the null value, use the MATH menu.

•You can make null measurements with any function except continuity, diode, or ratio. The null operation is local to the selected function; when you change functions, null is disabled.

•To null the test lead resistance for more accurate two-wire ohms measurements, short the ends of the test leads together and then press Null .

•The first reading taken after you press Null is stored as the null value in the Null Register. Any previously stored value is replaced with the new value.

•After enabling null, you can edit the stored null value by

pressing Shift > (Menu Recall). This takes you to the “NULL VALUE” command in theMATH MENU (only if null is enabled). Go down to the “parameter” level, and then edit the displayed value.

•The null register is cleared when you change functions, turn null off, turn off the power, or perform a remote interface reset.

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Chapter 2 Front-Panel Menu Operation

To Store Minimum and Maximum Readings

To Store Minimum and Maximum Readings

To read the minimum, maximum, average, and count, use the MATH menu.

•You can use min-max with any function except continuity or diode test. The min-max operation is local to the selected function; when you change functions, min-max is disabled.

•After enabling min-max, you can read the stored minimum,

maximum, average, and count by pressing Shift > (Menu Recall). This takes you to the “MIN–MAX” command in the MATH MENU (only if min-max is enabled). Go down to the “parameter” level, and then read the values by pressing < or > .

•The stored values are cleared when you turn min-max off, turn off the power, or perform a remote interface reset.

•The average is of all readings taken since min-max was enabled (not just the average of the stored minimum and maximum). The count is the total number of readings taken since min-max was enabled.

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Chapter 2 Front-Panel Menu Operation

To Make dB Measurements

To Make dB Measurements

Each dB measurement is the difference between the input signal and a stored relative value, with both values converted to dBm.

dB = reading in dBm – relative value in dBm

To read / edit the dB relative value, use the MATH menu.

• Select DC V or AC V .

•The first reading taken after you enable dB measurements is converted to dBm and is stored as the relative value in the dB Relative Register. Any previously stored value is replaced with the new value.

•After enabling dB operations, you can edit the relative value by

pressing Shift > (Menu Recall). This takes you to the “dB REL” command in the MATH MENU (only if dB is enabled). Go down to the “parameter” level, and then edit the value displayed.

•The register is cleared when you change functions, turn dB off, turn off the power, or perform a remote interface reset.

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