Measurement Computing StrainBook/616 User Manual
Page 118
11-4 Troubleshooting
9\68594
StrainBook/616 User’s Manual
3. WBK modules and expansion channels are not recognized.
Possible Causes
Details and Possible Solutions
The expansion
control cable or
connection is
bad.
Make sure that each expansion control cable (p/n CA-129) is connected to the proper port of the
StrainBook and associated WBK Module. The cable coming from the StrainBook must be connected to
the port labeled “Expansion Control.” The expansion control cable is connected to the “Expansion
Control In” port of the WBK Modules. Each WBK Module is equipped with an “Expansion Control
Out” port for “daisy-chain” connection to other WBK Modules.
The expansion
signal cable or
connection is
bad.
Make sure that each expansion signal connection cable (p/n CA-150) is properly connected to
expansion signal BNC ports. If the cable is defective, not present, or poorly connected, the host
StrainBook won’t be able to identify the associated WBK Module’s voltage signature.
There is
insufficient
power to one or
more system
components.
Proper operation is unlikely if any component of the StrainBook system is not adequately powered.
Check the power requirements for each attached WBK module and make sure that adequate power is
provided for each. Pay special attention to scenarios in which one AC adapter is shared between
multiple units. Chapter 2, System Setup and Power Options, includes power requirement tables.
4. Channel readings are wrong.
Possible Causes
Details and Possible Solutions
The channel is
turned off.
The On/Off column in WaveView’s Channel Configuration screen must be selected to “On” for the
applicable module.
There are no
input signals
connected.
Verify that the channel inputs actually have input signals connected to them. Inputs that are not actually
connected to a signal may behave erratically and result in erroneous readings. Unused channels should
be turned off or at least shorted to analog common to prevent their values from floating.
The Simulated
Instrument
mode is
selected.
Channel readings will not be true if WaveView is in the “Simulated Instrument” mode. When in this
mode the readings displayed are, as the mode’s name implies, simulated and there is no correlation to
the signal lines connected to the hardware. If this is the case, simply select the desired StrainBook from
the “Select Device” option in WaveView’s System pull-down menu.
The scaling via
y = mx + b
needs adjusted.
Readings can be off due to improper scaling such as volts to millivolts, incorrectly configured TC or 5B
module types or user defined mX+b equations. In the case of voltage readings (V), ensure that the units
being displayed are not being displayed in mV. The “Units” section of the WaveView document
includes an example of how the y = mx + b equation is used for scaling.
The chart’s
limits need
adjusted.
Make sure that the amplitude of the signal being measured falls within the current min./max. scale
settings of the chart’s Y axis. The upper and lower limits can be changed after the acquisition is
stopped. Simply type the new scale limits over the current ones. The Collect and View Data section of
the WaveView document provides additional information.
The wrong
channel is
assigned to the
chart.
Erroneous readings can be due to the wrong channel having been assigned to the chart. Make sure that
the intended channel was selected. In WaveView, the channel is selected from a list box in the upper
right-hand corner of the chart. The channels will appear in the list based on their “Label” from the main
Channel Configuration spread sheet.
A WBK30 was
installed or
removed by the
user.
The WBK30 memory card is installed in StrainBook at the factory per customer order.
Users are not to
remove or install these cards as the cards are not “plug-and-play” with respect to StrainBook
.
Erroneous
signal values can result.
If you desire to remove or add a WBK30 to contact the factory or your service
representative.
WBK15
Channel
Issues
In regard to WBK15, in addition to this table refer to table 8, WBK15 channel readings are wrong.