Vibration Research VR9500, Hardware Manual

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Calibration Verification Procedure
NOTE : Keysight is formerly known as Agilent Technologies.
REQUIRED EQUIPMENT
·
VR9500 unit that requires calibration verification
·
VibrationVIEW software installed on a Windows PC
·
Agilent IO Libraries Suite software
·
(5) BNC (coaxial) cables
·
(4) BNC Tee connectors
·
Dual banana to BNC adapter
·
Differential mode Tee
·
A Keysight/Agilent/HP 34401A, 34410A, 34411A, 34461A, 34465A, 34470A,
or 3458A digital multimeter (DMM) with valid calibration certificate.
MEASUREMENT DETAILS
The calibrated reference is a Keysight 34401A, 34410A, 34411A, 34461A, or
34470A. The accuracy specifications were determined by incorporating the
uncertainties inherent to these DMMs. The VR9500 Drive output is used to
generate a single-ended sinusoidal output. The VR9500 Drive output is paired
with the VR9500 COLA/AUX output to produce a differential sinusoidal output.
The reference output is nominally 1.414 Vpk-pk (1.00 VRMS). Each input is
verified both single-ended and differentially. The outputs and the inputs are
verified simultaneously.
At frequencies below 5Hz, the DMM is used in 5-1/2 digit mode to acquire the
reference at 300 samples per second using DC peak-hold mode. The maximum
minus the minimum value of the acquired reference is then divided by 2 times
the square root of 2 to convert the double-amplitude peak value to a reference
sinusoidal RMS value.
At frequencies above 5Hz, the DMM is used in 6-1/2 digit mode to directly
measure AC RMS voltage. The slow filter setting is used from 5Hz to 200Hz, the
medium filter is used from 200Hz to 1000Hz, and the fast filter is used at and
above 1,000Hz.
The Keysight 34401A must be configured for RS-232, 9600Baud, 8 Bit, no
parity, and language =SCPI. The Keysight 34410A, 34411A, 34461A, and
34470A can be configured to communicate via LAN, USB, or GPIB. When using
LAN, USB, or GPIB, the Keysight communication software must be installed on
the PC.