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2 digital filter – BNC 1201 - 6 1/2 Digit Digital Multimeter User Manual

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Front Panel Operation

Press CONFIG + ACV button. Use ◁ and ▷ buttons to locate “BAND

WIDTH” submenu, and then press ENTER to select it. Look for the desired

bandwidth using ◁ and ▷ buttons. Then press ENTER on your

selection. There are three options: 3Hz, 20Hz and 200Hz. The locations

of these buttons are shown with red rectangle frames in Figure 4-2.

Figure 4-2

Remote Interface Operation

From your PC terminal, use the following command to specify the filter

type:

DETector:BANDwidth {3|20|200|MIN|MAX}

4.1.2.2 Digital Filter

Definition:

1201 uses an averaging digital filter to yield a reading for display from a

specified number of measurement readings in the past. The past

measurement readings are stored in a stack of memory. The number

may be in the range of 2 to 100. User may select one of the two modes

of digital filter operations: Moving Average and Repeating Average.

The moving average filter puts the specified number of reading

conversions in a first-in, first-out order. The very first measurement

reading simply fills up the stack. To yield a reading for display, the filter

produces an average of the stacked measurement readings every time a

new measurement reading is available and replaces the oldest reading in