IMI Sensors: A PCB Piezotronics Div 699A07 User Manual
MAN-0192 rev A Page 7 of 39 800-959-4464
699A07 Operation Guide
For the following section, “point” is defined as the numerical value of the amplitude
at a given frequency. “Record” is defined as the collection of all numerical calibration
points at different frequencies and amplitudes saved together.
Basic Operation
For the basic operation of the 699A07, a vibration sensor and appropriate cable are
needed. Typically, the 699A07 is used as a vibration excitation source and as a
readout device with the vibration sensor connected to the 699A07’s Test Sensor
BNC Input. Alternatively, the 699A07 unit can be used to test different types of
vibration equipment (i.e. a vibration meter or vibration monitoring system), in which
case the sensor will be directly connected to the vibration measurement equipment
and the 699A07 is used just as a controlled excitation source.
Test Setup
1. Mount your sensor to the 699A07 mounting platform
• The 699A07 sensor mounting platform is threaded for a ¼-28 stud. Select an
appropriate adaptor for mounting the sensor.
• While tightening the sensor, secure the 699A07 mounting platform with the supplied
wrench to prevent damage from torque.
2. Connect sensor under test (SUT) to “Test Sensor In.” Make sure that connections are
secure.
3. Power the unit ON by pressing and holding the FREQUENCY dial for 3 seconds.
NOTE: It is good practice to perform calibrations on battery power. Disconnecting
from line power ensures a power surge will not cause the calibrator to power down
during test. If excess current is detected during use, the portable calibrator shuts
down to prevent damage.
Selecting Input Mode
4. The 699A07 can accept ICP® as well as AC voltage and AC current output sensors.
Press and hold the AMPLITUDE dial to select between ICP®, Voltage Mode or
Modulated Current mode. Modulated Current mode is only available if the firmware
option is ordered, otherwise user will not see this mode as an option.
Note: ICP® (or IEPE) mode sensors are the most popular type of accelerometer
transducers and require a 2 mA to 20 mA constant current supply to operate.
The 699A07 unit supplies the necessary constant current to power this class of sensors.
Voltage output sensors are typically moving coil velocity sensors but can also be the
voltage output of a signal conditioner associated with any type of vibration transducer
such as the output from the probe driver in a proximity probe system. Refer to the Sensor
Signal Measurement Electronics (SUT Input Characteristics and Considerations) for
details.
Setting the Frequency and Amplitude Units
5. Select the correct Frequency Units for your test by pressing the FREQUENCY dial to
enter into the CALIBRATION OPTIONS menu:
• Use the FREQUENCY dial to highlight TEST SETTINGS then press.
• Within the Test Settings Menu rotate the FREQUENCY dial to highlight
FREQUENCY UNIT then press to toggle between Hertz and CPM.
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