Digital Multimeter HDM3055 Series Manual

WisdomAugust

Specifying the Digit Masking

The Digit Mask softkey specifies the number of digits shown.

For example, the following image shows 6.5 digits.

WisdomAugust

In contrast, this image shows 3.5 digits.

The Auto softkey specifies that the number of digits displayed is based on other function-specific

settings, such as the measurement aperture, set in NPLCs. Measurements are always rounded,

never truncated.

WisdomAugust

Bar Meter

The bar meter (below) adds a moving bar below the standard Number display.

WisdomAugust

The Display and Digit Mask softkeys behave as they do in the Number display.

WisdomAugust

The Scale softkey specifies the horizontal scale:

l Default sets the scale to equal the measurement range.

l Manual allows you to configure the scale either as High and Low values or as a Span around a

Center value. For example, a scale that goes from a Low of -500 Ω to a High of 1000 Ω could also

be specified as a Center of 250 Ω with a Span of 1500 Ω.

WisdomAugust

Selecting a Secondary Measurement

Press 2nd Meas to select and display a secondary measurement. For example, for the DCV

measurement function, you can select ACV, Peak, or Pre-Math as the secondary measurement

function. With ACV selected as secondary, the display shows the DCV measurement as a number

near to top of the display, DCV in the bar meter, and the ACV measurement above the bar meter:

WisdomAugust

Trend Chart  

To select the trend chart, press [Display] followed by the Display softkey:

In the Continuous measurement mode, the trend chart shows data trends over time:

WisdomAugust

Recent/All

The Recent/All softkey shows either all of the data in the trend chart (All) or just the most recent

data (Recent). Neither selection clears reading memory.

In All mode, the trend chart displays all readings being taken and builds from left to right. After the

display is filled, the data becomes compressed on the left side of the display as new data is added

on the right side of the display.

Scaling

The Vertical Scale softkey specifies how the current vertical scale is determined.

WisdomAugust

Press Vertical, to change the scaling:

l Default sets the scale to equal the measurement range.

l Auto automatically adjusts the scale to appropriately fit the line currently shown on the screen.

l Manual allows you to configure the scale either as High and Low values or as a Span around a

Center value. For example, a scale from a Low of 0 V to a High of 5 V is equivalent to a Center

of 2.5 V and a Span of 5 V.

WisdomAugust

If you have enabled limits, the (Limits) softkey also appears. This sets the vertical scale to match

the limits.