| System |
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Carrying Case Size |
58 x 36 x 19 cm (23 x 14 x 7.5 in) approx. |
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Weight |
11 kg (24 lb) approx. including typical laptop PC. |
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| Laptop Personal Computer |
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Processor |
700 MHz Pentium min, 1 GHz Pentium rec. |
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Memory |
64 MB min, 128 MB rec. |
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Free Hard Disc |
100 MB min. |
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Screen |
1024 x 768 pixels min. |
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CDROM |
24X rec. |
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PCMCIA Slot |
Type 2 |
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Operating System |
Windows 98/Me/NT/2000/XP |
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| Data Acquisition Card |
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Type |
National Instruments DAQCard-6024E |
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Resolution/Range |
Bits |
Input Range |
Resolution |
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12 |
Fine: ±0.5V, Coarse: ±10V |
Fine: 0.24 mV, Coarse: 4.8 mV |
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| Core System: SC11 Sensor Interface |
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Inputs |
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MAG |
3-axis magnetic field sensor (SC20 AC or wideband DC sensor) |
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VIB1, VIB2, VIB3 |
3-axis vibration (3 x Wilcoxon 731A) |
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MIC |
Precision microphone (Brüel & Kjær, 4190/2669L) |
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AUX |
BNC voltage input, DC coupled, ±10 V range, 100 kΩ input impedance |
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Anti-aliasing filters |
5 kHz, 250 Hz (switchable) |
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Power |
100 - 240 V AC, 50 - 60 Hz, 0.25A max |
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| 3-axis Magnetic Field Sensor: SC20/AC |
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Co-ordinate System |
X, Y, Z rectangular Cartesian |
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Bandwidth |
5 Hz - 20 kHz |
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Dynamic Range |
40 mG (4 µT) Pk-Pk |
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Noise Limit |
100 nG (10 pT)/√Hz RMS at 50 Hz, 10 nG (1 pT)/√Hz RMS at 250 Hz, typ. |
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Accuracy |
±1 % |
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| 3-axis Magnetic Field Sensor: SC20/DCMR |
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Co-ordinate System |
X, Y, Z rectangular Cartesian |
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Bandwidth |
DC - 5 kHz |
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Ambient Field Range |
±2 G (±200 µT) |
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Dynamic Range |
40 mG (4 µT) Pk-Pk |
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Noise Limit |
DC: 5 µG (0.5 nT) Pk-Pk typ. (0.0001 - 0.01 Hz) |
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AC: 0.1 µG/√Hz (10 pT/√Hz) RMS typ. at 50 Hz |
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Accuracy |
±1 % (after >2hour warm up). (±15 % cold) |
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| Vibration Sensor: Wilcoxon 731A Accelerometer |
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Type |
Wilcoxon Research, model 731A |
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Dynamic Range |
20 mm/s2 Pk-Pk |
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Bandwidth |
0.1 - 500 Hz |
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Noise Limit |
7 µm/s2 RMS max. |
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0.35 µm/s RMS at 1Hz, 0.11 µm/s RMS at 5Hz |
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0.07 µm RMS at 1Hz, 0.0035 µm RMS at 5Hz |
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Accuracy |
±5 % (with gain calibration file) |
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| Acoustic Sensor: B&K 4190/2669L Precision Microphone |
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Type |
Brüel & Kjær, Condenser microphone 4190, Pre-amplifier 2669L |
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Bandwidth |
1.5 Hz - 20 kHz |
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Dynamic Range |
103 dB (in this system) |
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Noise Limit |
20 dB (in this system) |
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Accuracy |
±1 dB 3 Hz - 20 kHz |
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| Acoustic Sensor: Sound Level Meter |
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Type |
Radio Shack, Model 33-2050 or 33-4050 |
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Bandwidth |
32Hz - 20 kHz, dBA and dBC weightings |
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Dynamic Range |
126 dB |
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Noise Limit |
50 dB |
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Accuracy |
±2 dB at 114 dB sound level |
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Meter Response |
Fast, Slow |
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Signal Output |
1.0 V peak into open circuit with full scale meter deflection at 1 kHz |
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Load Impedance |
10 kΩ min. |
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Distortion |
< 2 % at 1 kHz and 0.5 V |
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| 1-Axis Magnetic Field Sensor: Flux Gate Magnetometer |
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Type |
MEDA µMAG-01N |
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Bandwidth |
0 - 100 Hz (some models 0 - 400 Hz) |
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Ranges |
±20.00, ±200.0, ±2000 mG full scale |
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Accuracy |
±0.5% of full scale |
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Linearity |
±0.05% of full scale |
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Signal Output |
±2 V full scale |
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| Programs (General) |
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Clipping |
Audio/visual indication |
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Pause control |
Freeze/resume instrument operation |
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Calibration panel |
Add/select sensors, set ranges, calibrate offsets, microphone self check, add/edit user defined units, set export file options. |
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Setup file |
Open/save instrument controls |
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Export |
Export results for spreadsheet |
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Comment pad |
3 lines |
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Print window |
Print current screen display |
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Help |
Context help on controls, online help file |
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Year 2000 |
All SC11 programs are year 2000 compliant |
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| Oscilloscope |
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Channels |
4 (X, Y, Z and A) each with style and position controls |
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Divisions |
10 X 10 |
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Amplitude Units |
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Magnetic Field |
mG, nT, mT, mA/m, A/m |
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Vibration |
mg's*, mm/s2 |
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Acoustic |
mPa, Pa |
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Voltage |
mV, V, user defined units |
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Resultant |XYZ| |
Magnetic Field, Vibration, Voltage units |
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Timebase |
0.5, 1, 2, 5, 10, 20, 50, 100, 200 ms/div |
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Bandwidth |
5 kHz (0.5 ms/div - 5 ms/div) |
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250 Hz (10 ms/div - 200 ms/div) |
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Digital Meter |
RMS, Peak to Peak (all channels) |
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Trigger |
Auto/Manual level, +/- edge, Auto/Manual source |
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Single Shot |
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| Spectrum Analyser |
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Channels |
4 (X, Y, Z and A) |
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Displays |
Waveform (autoscaling), Spectrum |
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Amplitude units |
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Magnetic field |
mG, nT, µT, mA/m, A/m |
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Vibration |
µg's*, mg's*, µm/s2, mm/s2, µm/s, mm/s, nm, µm |
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Acoustic |
mPa, Pa, dB, dBa, dBC |
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Voltage |
mV, V, user defined units |
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Resultant |XYZ| |
Magnetic Field, Vibration, Voltage units |
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Amplitude ranges |
0.5, 0.7, 1, 1.5, 2.5, 3.5, 5, 7, 10, 15, 25, 35, 50, 70, 100, 150, 250, log full scale |
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Frequency ranges |
20, 25, 30, 40, 50, 60, 80, 100, 125, 150, 200, 250, 300, 400, 500, 600, 800, 1000, 1250, 1500, 2000 Hz full scale |
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Number of points |
200, 250, 400, 500, 800, 1000, 1600, 2000,3200, 4000 |
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Accuracy |
Amplitude: ±5% (not including sensor accuracy or noise) |
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Frequency: ±0.01% ±0.02 div |
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Waveform windows |
None, Hanning, Flat top |
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Spectrum modes |
RMS, 0-Pk, Pk-Pk, PSD, Third Octave |
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Combine spectra |
Average/Peak, Max no. spectra |
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Cursor modes |
Total RMS between 2 tracking cursors, 10 harmonic cursors |
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Pan & Zoom Palette |
Pan, zoom and format spectrum display |
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Capture indicator |
Indicates progress of data acquisition |
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Specification files |
Create, edit, add & remove. Compare with measurements. |
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Data logging |
Start: Now, At time, Triggered by flat level, Triggered by spec |
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Stop: Period, File size, Disk space |
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Min. time step: 1 minutes |
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| Chart Recorder |
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Channels |
4 (X, Y, Z and A) each with style and position controls |
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Divisions |
10 X 10 |
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Amplitude units |
|
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Magnetic field |
mG, nT, µT, mA/m, A/m |
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Vibration |
mg's*, mm/s2, µm/s, mm/s, µm |
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Acoustic |
mPa, Pa, dB |
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Voltage |
mV, V, user defined units |
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Resultant |XYZ| |
Magnetic Field, Vibration, Voltage units |
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Timebase |
0.5, 1, 2.5, 5, 10, 25, 50 s/div (50 points/div) |
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Chart length |
200 div. max. (1.6 minutes – 2:45 hours:minutes) |
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Max Bandwidth |
(Bandwidth may be reduced by bandwidth controls) |
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Magnetic field (SC20/DC sensor) |
DC - 5 kHz |
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Magnetic field (SC20/AC sensor) |
5 Hz - 5 kHz |
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Vibration |
0.1 Hz - 500 Hz |
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Acoustic (Precision Microphone) |
1.5 Hz - 5 kHz |
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Acoustic (SLM) |
32 Hz - 5 kHz |
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Voltage |
DC - 5 kHz |
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Bandwidth controls |
XYZ/A upper/lower for all modes except narrow band |
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Narrow band filter |
Centre frequency, f0 range: 1 Hz - 1250 Hz
Accuracy: ±1% within pass band (f0 ± 3%)
Attenuation: 60 dB min. in stop band (f0 ± 20%) |
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Chart modes |
Waveform, RMS, Peak to Peak, Narrow band RMS, Narrow band Pk-Pk. |
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Markers |
Time, text string |
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Update modes |
Strip chart, scope chart, sweep chart |
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Chart palette |
Pan, zoom, format, reset and clear chart |
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Data logging |
Start: Now, At time, Triggered
Stop: Period, File size, Disk space
Min. time step: Whole number of points (0.01 s at 0.5 s/div) |
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| * g is the acceleration due to gravity |
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