Measurement Computing WaveBook rev.5.3 - Manual (Page 116)

7-8 Troubleshooting 979194 WaveBook User’s Manual - IO version
8. WBK15 channel readings are wrong.
Possible Causes Details and Possible Solutions
> Note: The preceding table also applies to WBK15.
The wrong 5B
type has been
selected.
Check that the correct 5B Module type is selected in WaveView. Selection is made by clicking on the
applicable WBK15 channel’s Range / Mode cell in WaveView’s Channel Configuration screen. This
brings up a pull down list from which you can select the proper 5B module, for example, a 5B30-06 or
a
5B47-B-11
The WBK15 section of the WBK Options Manual includes software setup information pertaining to 5B
modules. A PDF version of the document is included on the data acquisition CD.
The wrong
scaling
is in effect.
WaveView automatically selects the scale related values m and b (in the y = mx + b equation) according
to the type of 5B module; however, a user can easily change these values to customize the engineering
units. Refer to the technical information for the specific 5B Module to ensure that the proper
correlation exists between the input sensor’s units and 5B module’s output scale. In regard to
customizing the scale via WaveView, refer to the WBK15 Software Setup section in the WBK Options
Manual.
There is
insufficient
power to the 5B
module.
5B Modules require +5VDC power and some minimum amount of available current, which is typically
supplied by the WBK15. In cases where strain gage modules are used, ensure that no overloading of
the excitation output is occurring through bridge circuits.
The
thermocouple
leads are
reversed.
If readings appear to be negative when they should be positive, verify that the thermocouple leads are
not reversed.
The load cell
excitation source
is overloaded or
not connected
properly.
Some 5B Module types, for instance strain gage conditioners, provide an excitation source for the
connected sensor. Check the specifications for the module and make sure that the excitation source is
properly connected and not over-loaded.
9. WaveView Scope stops.
Possible Causes Details and Possible Solutions
Auto-Rearm is
disabled.
If the WaveView Scope acquires and displays data but then stops running, it is most likely due to the
Auto-rearm feature being disabled. If you desire to view data continuously click the auto-rearm button
in the scope window, or select auto-rearm in the Scope window’s Acquire pull-down menu.
Refer to the section, WaveView Scope Window, in the WaveView & WaveCal document for additional
information.