Using The Bias Voltage Check - Commtest Instruments vbBalancer Instrument Reference Manual

Toggle Bias Voltage Check on and off (none), and edit,
create or delete this value.
Notes on defining and editing sensors:
Once a sensor has been defined as a particular sensor type,
•
e.g. accelerometer, you will not be able to change the
sensor's type if the instrument contains any recordings taken
with that sensor; the instrument will associate these
recordings with their sensor. If you need to redefine the
sensor type, delete all the associated recordings in the
instrument first.
When you set the parameters for a measurement you cannot
•
choose settings that conflict with the type of measurement
you are trying to create e.g. if you are measuring
acceleration you cannot select a current sensor. When you
try to take the measurement the instrument will display a
message similar to the following:
Incompatible Sensor
Cannot take recording of type: Current
When using a sensor type Acceleration

Using the Bias Voltage Check

The Bias Voltage Check allows the instrument to warn operators of
errors or fault conditions such as short-circuits, faulty sensors or
open-circuits by comparing the actual sensor bias voltage with the
expected voltage range, as configured in the instrument.
Most accelerometers have an output voltage centered on 12 V DC,
so the instruments have a default bias voltage range of 8 V to 16 V.
Some sensors may utilize a lower or higher bias voltage. If using
such a sensor, review the manufacturer's documentation and create
a new Bias Voltage range to suit.
To change the sensor's Bias Voltage range settings:
From the Main Menu press
•
Press
•
Sensor Setup.
Section 10: Creating, Editing and Deleting Items 103
Options.