ObserVR1000 Automated Calibration Verification Instructions

January 12, 2021

Vibration Research recommends an annual calibration verification for vibration controllers and dynamic signal analyzers. In this lesson, learn how to perform an automated verification for the ObserVR1000.

ObserVR1000 Automated Calibration Verification Instructions

Equipment/Software

  • ObserVR1000 unit that requires calibration verification and a battery charger
  • VibrationVIEW software installed on a Windows PC (download free demo software)
  • An Ethernet cable
  • An input/output loopback adapter (VR1980)
    • Alternative to VR1980: (17) BNC (coaxial) cables, (16) BNC Tee connectors, and dual banana to BNC adapter
  • A Keysight/Agilent/HP 34401A, 34410A, 34411A, 34461A, 34465A, 34470A, or 3458A digital multimeter (DMM) with valid calibration certificate

NOTE: Equipment is available for purchase through Vibration Research.

Automated Calibration Instructions

Run Preliminary Verification (1-year Tolerance)

  1. Connect the ObserVR1000 to a power source.
  2. Connect the ObserVR1000 to the Windows PC running VibrationVIEW with the Ethernet cable.
  3. Use the input/output loopback adapter to connect the output to the inputs and the DMM.
  4. Run VibrationVIEW.
  5. In VibrationVIEW, click Configuration > Hardware. Review the Serial Number field and verify that the ObserVR1000 serial number is displayed.

VibrationVIEW hardware configuration

  1. Click OK.
  2. In the main menu, click Test > Test Type > System Check.
  3. Run the ObserVR1000 in System Check for 1 hour to allow the temperature to stabilize.
  4. After the 1-hour warm-up, click Configuration > Verification.
  5. In the Select Device drop-down list, select Agilent 34401A connected to CommN and connect the Agilent 34401A or other DMM to the selected Comm port N. VibrationVIEW also supports the DMM’s USB and network connections where available. This requires the Agilent IO Control application. For the 34401, we recommend using the SmartWorks USB to RS-232 adapter if no RS-232 ports are available on the PC.
  6. In the Select Configuration drop-down list, select Pre-Calibration Check for ObserVR1000.
  7. Click Next >.
  8. A Select User message will appear and require a password. Enter Control as the password and click OK.
Select User message

Select User message.

  1. The ObserVR1000 will output a small voltage signal and then read it back to verify a connection to the input channels.
    a. If the ObserVR1000 is not able to verify all connections, the Next > button will be unavailable. The technician must determine if the error is caused by a faulty connection of the loop-back cable, a faulty wire in the loop-back cable, or a fault with the ObserVR1000.
    b. If the ObserVR1000 can verify all connections, a brief fluctuation in the Level VRMS values will occur, and then the Next > button will be available. Click Next >.
  2. A form pre-filled with the DMM details will appear. Fill in the remaining fields with the appropriate values and click OK.
  3. If the procedure fails to meet the 1-year factory specifications, a warning message will appear. Check your cable connections and procedure to confirm the proper steps were followed. If the proper procedure was followed and the result is out of the specifications, then the ObserVR1000 must be recalibrated. Contact the factory for recalibration information.
  4. If the procedure meets the 1-year factory specifications:
    a. Save data as SN-TimeStamp-PreVerify.
    b. In the Microsoft Word document, add As received to the first line.
    c. Run the full verification procedure.

Run Full Verification (24-hour Tolerance)

  1. Connect the ObserVR1000 to a power source.
  2. Connect the ObserVR1000 to the Windows PC running VibrationVIEW with the Ethernet cable.
  3. Use the input/output loopback adapter to connect the output to the inputs and the DMM.
  4. Run VibrationVIEW.
  5. In VibrationVIEW, click Configuration > Hardware. Review the Serial Number field and verify that the ObserVR1000 serial number is displayed.
  6. Click OK.
  7. In the main menu, click Test > Test Type > System Check.
  8. Run the ObserVR1000 in System Check for 1 hour to allow the temperature to stabilize.
  9. After the 1-hour warm-up, click Configuration > Verification.
  10. In the Select Device drop-down list, select Agilent 34401A connected to CommN and connect the Agilent 34401A or other DMM to the selected Comm port N. VibrationVIEW also supports the DMM’s USB and network connections where available. This requires the Agilent IO Control application. For the 34401, we recommend using the SmartWorks USB to RS-232 adapter if no RS-232 ports are available on the PC.
  11. In the Select Configuration drop-down list, select the configuration setting Calibration Verification ObserVR1000.

Calibration configuration ObserVR1000

  1. Click Next > to connect to the DMM.
  2. A Select User message will appear and require a password. Enter Control as the password and click OK.
  3. The ObserVR1000 will output a small voltage signal and then read it back to verify a connection to the input channels.
    a. If the ObserVR1000 is not able to verify all connections, the Next > button will be unavailable. The technician must determine if the error is caused by a faulty connection of the loop-back cable, a faulty wire in the loop-back cable, or a fault with the ObserVR1000.
    b. If the ObserVR1000 can verify all connections, a brief fluctuation in the Level VRMS values will occur, and then the Next > button will be available. Click Next >.
  4. A form pre-filled with the DMM details will appear. Fill in the remaining fields with the appropriate values. Click OK.

Certificate entry form

  1. A calibration verification report searchable by date and serial number is generated when the verification process is complete. The Save calibration information window will appear, regardless if the verification was a success or failure. Select the file location where the report should be saved. Click Save.

Save calibration information

  1. If the procedure meets the 24-hour factory specifications:
    a. All recorded measurements will fall within the ObserVR1000 accuracy specifications as defined in the ObserVR1000 Calibration Verification Specifications.
    b. A message will appear to authorize that a new calibration certificate can be written to the ObserVR1000’s non-volatile memory: “Would you like to burn the calibration certification to the I/O unit?” Click Yes.
    c. The Save calibration information window will appear; select the file location where the certificate should be saved. Click Save.

Update IO unit message

  1. If the procedure fails to meet the 24-hour factory specifications, the following message will appear: “Verification procedure FAILED!!! Some readings are out of the tolerance bands.” If this message appears, then the ObserVR1000 must be recalibrated. Contact the factory for recalibration information.