Measurement-computing WaveView Uživatelský manuál stáhnout pdf (Strana 17)

WaveView

03-05-02

WaveView, pg. 15

Simplifying gives you:

3200 = m(10) (5)

This means:

m = 320 (6)

C - Substitute the value for m into equation (3) to determine the value for b:

0 = 320 (0.5) + b (7)

b = - 160 (8)

Now it is possible to rewrite the general equation (1) using the specific values for m and b that we just

determined:

Engineering Units = 320(Raw Signal) - 160 (9)

The user can then enter the values of m and b into the appropriate location using the facilities provided by

compatible data acquisition software, for example: WaveView, DaqView, Personal DaqView, LogView,

and TempView. The software uses equation (9) to calculate signal values in engineering units from that

point on.

Range –

This column allows you to set the gain and polarity for the selected channel(s). Clicking the

mouse in any of the analog channel

Range

boxes brings up the "Select Range" selection box.

The range of gains available in the selection box depends on the hardware installed in the

system. Double-clicking on a channel’s

Range

box will cycle through the available ranges.

The

Range

selections have no effect on the Digital Input channel.

5B Type –

If a 5B module is being used, the type will be displayed when this column is visible.

Auto Zero

(32-Bit WaveView Only).

Auto-zero is used to null out any DC offset that might be

present in a channel. WaveView nulls out the offsets of all channels set to “Yes” in the Auto Zero column,

providing the channels are enabled (“On”).

➪

WBK17 Note -

The

Auto Zero function does not apply to WBK17.

LPF Mode -

Applies to: WBK12, WBK13, WBK14, WBK16, and WBK17

. This column allows

you to include or bypass a channel’s low-pass filter. The bypass mode is the default. Double-clicking a cell

in the LPF Mode column will cycle through the available options, i.e., “On” and “Bypass.”

➪

WBK12 and WBK13 Note

– The LPF type (linear or elliptic) is set in the Module Configuration

window, accessible via the associated toolbar button “1,” or from the View pull-down menu. The LPF type

and Cutoff settings apply to channel banks, not to individual channels. WBK12 and WBK13 each have two

banks of four channels. Setting one channel of a bank updates the banks remaining channels.

➪

WBK14 Note –

For WBK14 applications,

the LPF Mode column allows you to select “On”, “Bypass”,

or “External.” The later is used to select an external filter.

LPF Cutoff –

Applies to: WBK12, WBK13, WBK14, WBK16, and WBK17

. This column allows

you to set the low-pass filter cut-off frequency for the selected channel(s). Since the WBK12 and WBK13

filters are assigned to banks, setting one channel of a bank updates the banks remaining channels. Note that

LPF Cutoff can only be set in the

Module Configuration window

accessible via the associated toolbar

button (1) and the

View

pull-down menu.

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