Gracey & Associates   01234 708835



Gracey Logo

Sound and Vibration Instrument Hire and Calibration

Diagnostic Instruments Specifications


 
Diagnostic Instruments FFT Analyser
 

The DI 2200 has been withdrawn from our hire lists, for FFT analysis please see the B&K 2250 FFT Option.

The following information is for reference purposes only.

 
DI 2200 : Real Time - FFT Analyser - dual channel  
 

Inputs


No of channels : 2
Range : ± 10 mV to ± 10 V in 10 steps
Coupling : AC,   DC,   IEPE Accelerometer with 15 V, 4 mA supplies
Impedance : 1 MΩ
Dynamic Range : 70 dB
Sensitivity Range : 130 dB
 

Analysis


Base band Frequency : DC - 25 kHz to DC - 40 kHz in 10 ranges
Zoom Analysis : up to x 80 in 1 : 2 : 5 sequence
Maximum Sample Rate : 102.4 kHz
Real Time Bandwidth : 20 kHz max, single channel and 10 kHz max, dual channel
Resolution : 100 : 200 : 400 : 800 : 1600 line spectra
Windowing : Rectangular, Hanning, Flat top, Force and Exponential
Averaging Time : up to 4096
Averaging Process : up to 4096 Linear, Exponential, Peak
Amplitude Accuracy : ± 0.5 dB typical
 

Process Function


Time Domain : Ch1 : Ch2 : Ch1-Ch2 : Both
Spectrum : Ch1 : Ch2 : Both
RMS
Cross Correlation
Transfer Function
Coherence
Power Spectral Density
Cross Spectrum
Octave 1/1 and 1/3 synthesized
Spectrum and Octave Calibration
 

Triggering


Modes : Normal : Free run : Single shot
Level : Variable with resolution of 1 part in 200, + or - slope. Ch1, Ch2 relative delay
Trigger Point : Pre and post trigger, set by number of points before and after trigger point
Trigger Source : Internal or external +5 V TTL
Sample Clock Source : Internal or external +5 V TTL or generated internally via phase locked loop from external trigger
 

Display


Formats : Single trace : Dual trace : Waterfall up to 99 traces : Orbit
Resolution : 320 x 240 pixels
Type : High contrast LCD. Alphanumeric/graphic with back light
Cursors : Single X and Y readout : Harmonic up to 200 : Side band : Peak search
Scaling : Manual. Automatic calculation of engineering units, EUs
EU Display Formats : G : m/sec : m(Metric). G : in/sec : mils (English). User defined
 

Data Storage

Record and Setup Storage capability to
Memory Card : Up to 2 Mbyte removable memory
Internal SRAM : Internal 512 Kbytes non volatile. Static RAM
Typical capacity of internal memory is 200 (200 line) spectra
 

Interface


RS-232C : File transfer to host computer. Variable baud rate to 38400
Memory Card : Data storage capability. JEIDA / PCMCIA standard
 

General


Battery Type : Ni cd rechargeable battery. Charger/Mains power adaptor is supplied
Time between charge : 6 hours continuous running, typical
Memory back up : Lithium cell up to 10 years
Weight : 3 kg
Size : 313 mm x 215 mm x 93 mm approx
Operating Temperature : 0 °C to 50 °C
 
E&OE - specifications subject to change without notice.