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