Measurement Computing WaveView - Manual (Page 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)
So : 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.