Specifications
This chart compares the different NOVA models to an industry standard analyzer (made by Hewlett-Packard). If there is a particular specification that is critical to your test or selection, please contact HEM Data for the latest information.
General Description
|
HP 35670A |
NOVA-AS |
NOVA-WB |
NOVA-DB |
|
Commonly used dedicated analyzer. Not PC-based. Good analyzer to compare NOVA’s specifications. |
Dedicated to noise and vibration testing. Excellent specifications. |
Versatile 8 to 64 channel system with optional signal conditioning for a variety of sensors. |
For users who only need 2-4 channels and price is important. |
Inputs
|
|
HP 35670A |
NOVA-AS |
NOVA-WB |
NOVA-DB |
|
Number of Channels |
2 or 4 |
2-20 |
8 to 64 |
2 or 4 |
|
Simultaneous Channels |
1 A/D per channel |
1 A/D per channel |
SSH |
SSH |
|
Connection |
BNC |
BNC |
BNC |
BNC |
|
Input Impedance |
1 MW |
100 kW |
5 MW |
150 kW |
|
Coupling |
AC / DC |
AC / DC |
AC / DC |
AC / DC |
| ICP Power | Yes | Yes | Yes | Yes |
| Sensor Database | No | Stores all your sensors and their properties for future use | ||
| Auto Calibration | Yes | Yes | ||
| Auto Ranging | No | Yes | ||
Acquisition
|
|
HP 35670A |
NOVA-AS |
NOVA-WB |
NOVA-DB |
| Frequency Range |
1 chan. – 102 kHz |
20 kHz for each channel |
1 chan. – 400 kHz 2 chan. – 200 kHz 4 chan. – 100 kHz 8 chan. – 50 kHz |
1 chan. – 40kHz 2 chan. – 20 kHz |
| Amplitude Range | 4mV to 31.7Vpk manual / auto |
+20V |
5mV to 10Vpk 50mV, 5V, 5V |
25mV to 5V 8 steps |
| Dynamic Range | 80 dB FFT mode |
115 dB | 65 dB | 60 dB |
| Resolution | — | 24 bits | 16 bits | 16 bits |
|
Trigger / |
Free-run / External |
Free-run / Analog S/W |
||
| FRF Channel Match* |
± 0.04 dB |
± 0.02 dB |
± 1dB |
± 3.32 dB |
Analysis
|
|
HP 35670A |
NOVA-AS |
NOVA-WB |
NOVA-DB |
| DSP | YES | YES | NO | NO |
| Windows | Hann, flat top, uniform, force, exponential | Up to 23 different types including Hann, flat top, exponential, Hamming, Blackman, etc. |
||
| Measurement Modes | Coherence, CDF Correlation, Cross Spectrum, Frequency Response, Histograms, Linear Spectrum, PDF, PSD, Power Spectrum, Time |
Admittance, APS, APSD, Coherence, Coherent Output Power, Compliance, Cross Power Spectrum, Cross PSD, Dynamic Accelerance, Dynamic Stiffness, Dynamic, Flexibility, Forward / Inverse FFT, Histogram, Impedance, Mobility, 1,1/3, 1/12 Octaves, Time, Transfer Function | ||
| Octave Measurement | 1, 1/3, 1/12 (Optional 1D1) |
1, 1/3, 1/5, 1/8, 1/12 Octave band | ||
Display
|
|
HP 35670A |
NOVA-AS |
NOVA-WB |
NOVA-DB |
| Trace Types | Log, Linear, dB phase, real, imaginary, polar, Nyquist, Bode, unwrapped phase and group delay | Linear, Log, dB (10x), dB (20x), Phase, bar meter, dial & digital meters, histograms, indicator panels, strip chart | ||
| Trace Formats | Single, upper/lower, quad, front back, setup, waterfall | Any number of Real-Time or Acquired Data displays, in any order, with 16 colors single, and overlap displays. 8 display pages. Up to 100 plots per page. Overplot up to 16 plots per page. | ||
| Display | Small Monochrome | Color Monitor or Laptop Screen. User has all the options of PC-based display technology, such as 256 colors, large monitors and portable laptop displays. | ||
| Overplotting | N/A | Can plot acquired and analyzed waveforms | ||
| Auto Scale | 1 channel | Works on all channels and displays | ||
Storage To Disk
|
|
HP 35670A |
NOVA-AS |
NOVA-WB |
NOVA-DB |
| Throughput | 262k samples/s | Acquire and store at maximum rate of 400k samples/s.** | 1 M points at 1000 ks/s Sample Rate** |
1 M points at 66ks/s Sample Rate** |
| Saved Data | 2.0 MB | GB of data. Unlimited. Function of storage medium. Can use any PC-based storage devices including portable memory cards, and high capacity storage and network communications. | ||
| Recall Data | Only time data | Both time and frequency data | ||
Operating System
|
|
HP 35670A |
NOVA-AS |
NOVA-WB |
NOVA-DB |
| Operating System | DOS, HP Basic | Windows XP, 2000, NT, 98 | ||
| Plotting and Printing | Requires serial interface | Press the button on the screen | ||
| Data Storage to PC | Requires serial interface | Automatic Storage | ||
| Auto Naming of files | Requires a user written program | Auto names files and will not write over files unless specified. Uses either date/time, seeded, or ordinary file formats | ||
Packaging
|
|
HP 35670A |
NOVA-AS |
NOVA-WB |
NOVA-DB |
| Weight | >20 lb. |
2 – 3 lb. |
||
| Size (in) | 12W x 18D x 8H | 8.0W x 7.0D x 1.7H | 11W x 8.5D 1.375H | 11W x 8.5D x 1.375H |
| System Hardware | Dedicated H/W | Modular off the shelf | ||
Notes:
* Testing was performed at HEM Data for each set of hardware.
** The maximum values are based on the Toshiba Pentium 2.8 GHz Laptop, 496 MB RAM.