IM4830B Rev B
6
October 9, 2019
1.0
Product description
The 4830B accelerometer simulator is a hand held battery operated signal generator designed specifically to
simulate the electrical output of common types of accelerometers. The instrument contains a highly accurate
oscillator with an adjustable output level and is ideal for setting up, testing and the diagnosis of faults within data
acquisition systems, FFT analyzers, environmental test systems or simply as a flexible signal generator.
The instrument provides AC output signals which mimic those of either voltage mode accelerometers (generic
IEPE, Isotron® types etc.) or charge mode accelerometers (both single ended and differential configurations).
The simulation outputs are conveniently scaled in units of acceleration, i.e. “g”, as mV/g (millivolt) or pC/g (pico-
coulomb) signals as appropriate, although the outputs can be configured to be proportional to units of velocity or
displacement. An auto-calculating on screen “Vibration Calculator” provides the user with corresponding values
in respect of m/s
²
, ips, mils, mm and m/s based units.
The instrument also features a TTL compatible tachometer output which allows operators of condition monitoring
systems to set signal conditioning tracking filter center frequencies without the need to generate an external,
real time tachometer signal. The tachometer frequency is adjustable as a ratio of the respective output signal
frequency.
The 4830B also features the ability to analyze a vibration signal using a Fast Fourier Transfer function. This
allows a voltage proportional vibration signal to be inputted to the instrument thereby providing an indication of
both frequency and magnitude.
Simulation parameters can be selected, adjusted, and saved as a “profile” either by the front panel keypad or
using the supplied utility program. Use of the utility program not only allows profiles to be created and saved but
also organized into specific “profile sets” which can be conveniently stored on a PC. Up to 40 user profiles may be
downloaded to the simulator at any one time.
