Portable FFT Analyzer
4ch 8ch High Performance & All in One
The CF-3650/CF-3850 features a variety of measurement applications such as natural frequency measurement by frequency response function, tracking analysis for evaluating the dynamic characteristics of rotating machines and engines, real-time octave analysis which is effective for acoustical analysis and throughput disk function enabling direct recording of waveform data to the built-in hard disk drive of CF-3650/CF-3850 directly.
In addition, 1/N real-time octave, octave tracking and field balancing analyses can be performed by installing optional software. Also, by using installed secondary processing software such as OC-1300 Graph creating software and commercially available software, you can make presentable report easily with the measured and analyzed data.
The ease of portability and setup makes the CF-3650/CF-3850 ideal for work on the jobsite
Simply plug the CF-3650/CF-3850 in and connect the sensors and it is ready to take measurements. The light weight all-in-one structure makes using the unit at a jobsite easy and efficient. A battery backup ensures the data will never be lost in the event of a power loss.
15-inch color touch panel monitor providing direct operation
The CF-3650/CF-3850 comes equipped with a 15-inch color touch panel monitor providing direct, intuitive operation and eliminates the need of a keyboard and mouse.
Combined with application software, the CF-3650/CF-3850 provides a wide array of analysis tools.
Noise and vibration measurements
Tracking analysis provides the capability to evaluate rotating machines and engine dynamic characteristics.
With real-time octave analysis, acoustical analysis is provided.
Throughput disk function writes waveform data directly onto the built-in hard disk.
/N real-time octave, octave tracking, and field balancing analyses are available by adding optional software.
Wide 100 dB dynamic range with 24-bit A/D
CF-3650/CF-3850 series can perform on-site recording of waveform simultaneously up to 8ch with 24 bit A/D. As well as off-line analysis of the recorded data, advanced and various analyses are possible such as multi-frequency range analysis and fluctuation sound analysis via PC analysis software or OS series.
*8ch recording: CF-3850 series only
Easy data processing and efficient report creation. The OS-2000 series and OC-1300 series expand the networks and possibilities for future.
The time-axis data (dat. txt.) or recorded data (ORF) of the CF-3650/CF-3850 can be freely edited and analyzed by the OS-2000 series time-series data analysis software. Moreover, the OC-1300 series multi-functioned graph creating software enables efficient report creation with various graphs using the analysis result of CF-3650/3850 or OS-2000 series.
Frequency response function measurement
Resonance may cause not only chattering vibration in robots and machine tools but also vibration and noise in automobiles and home appliances. The most popular method for analyzing resonance is measurement of the frequency response function of the object, using an impulse hammer. Excitation by an impulse hammer is the ideal choice of the on-site measurement for trouble shooting because it reduces measurement time without the need to mount the object on an exciter. It enables simultaneous processing of up to 8ch*, 40 kHz range and 6,400 points of frequency analysis.
*8ch processing: CF-3850 series only
Rotating machinery such as engines, compressors and turbines etc. must cover wide range of rotating speed from very low to high speed. The most important issue is resonance caused by the rotating speed of the machinery, in which the rotation frequency is the same as the natural frequency of the rotating machinery’s components (e.g. axles, gears and brackets.). In case of torsion vibration in large power generators and the like, resonance can cause serious accidents, creating vibration excitation energy that exceeds the tolerance of the machinery, destroying it. Rotation tracking analysis is the effective method to identify the rotating speed at which resonance occurs in rotating equipment, and which components and orders (multipliers) of the rotating speed generate noise or vibration.
Throughput disk function
The ability to directly store the original signal waveform to the HDD of CF eliminates the needs to save to a data collector then retrieve it. This also allows you to store the data in non-degrading digital status. Use the data recorded via the throughput disk function to analyze it on the CF as well as the offline analysis at the PC on which DS or DS installed. By changing the measurement and analysis conditions allows for flexible analysis.
*8ch recording: CF-3850 series only
Note: Please consult us for details of regarding the licensed version of DS-0221LA, DS-0222LA, DS-0223LA, and other software.
Maximum recording time
|Frequency range||CF-3650 series (4ch)||CF-3850 series (8 ch)|
|40 kHz||87 minutes||43 minutes|
|20 kHz||175 minutes||87 minutes|
*Recording time at AD conversion with 16-bit data only.
File export function
DS-0251AConverts files saved by the throughput disk function in ORF format into WAV, TXT, DADiSP, MATLAB, UFF and other formats, and export them to other applications for secondary analysis.
Real-time octave analysis
In order to solve the noise problem, the frequency analysis is required. And octave analysis has long been used for frequency analysis. An octave is a frequency with ratio of 1:2 to the frequency that is, double the frequency. The human ear senses sounds in geometric progressions to the frequency. A series of octave bands based on 1 kHz has been standardized, and the acoustic pressure level of each band. The octave band based on 1 kHz is called the 1/1 octave band, while the bands formed by dividing into third are called the 1/3 octave bands. CF performs real time octave analysis for 4 channels simultaneously.
1/N Real-time octave analysis (option)
This software can analyze and display the signal power of noise and vibration as 1/6, 1/12, 1/24 real-time octave band. Simultaneous analysis up to 2ch from 0.701 Hz to 17.20 kHz (1/24 octave) can be performed. Also the DS-0224A can measure the following four values simultaneously; maximum value, minimum value, power average value and power sum value.
|1/6 octave bands||Ch1 to ch4 (CF-3650)
Ch1 to ch8( CF-3850)
|1/12, 1/24 octave bands||Ch1 and ch2 (CF-3650)
Ch1, ch2, ch5 and ch6 (CF-3850)
* DS-0223WA 1/1 and 1/3 real-time octave analysis software is required in the use of DS-0224A.
Octave tracking analysis (option)
This octave tracking analysis software can analyze level trend of every band for the rotating speed by input of rotation information and retrieving of each fixed rotation as real time octave analysis data. Note: DS-0223WA Real time 1/1 and 1/3 octave analysis software is required.
* DS-0223 1/1 and 1/3 real-time octave analysis software is required in the use of DS-0243.
Field balancing software (option)
The trouble of rotation machinery is caused most frequently by Imbalanced phenomenon of rotating shaft. So the balancing correction is required, but the conventional vector calculation method with drawing takes some time and it makes on-site field balancing difficult. The DS-0227A measures the unbalancing phenomenon easily and efficiently by calculating and displaying the results of 1-plane 1-condition, 1-plane 2-condition and 2-plane 2-condition.
|Number of input channels||4-ch (CF-3650)
|Impedance||1 MΩ ± 0.5%, 100 pF or less|
|Coupling||DC or AC (-3 dB 0.55 Hz or less)|
|Current supply for sensor||2 mA/4 mA|
|Acoustic filter|| A/C-weighted (standard)
・IEC 61672-1:2002 class1
・ANSI S1.4-1983 TYPE1
・JIS C1509-1:2005 Class1
|Voltage range||-40 to 20 dB Vrms (every 10 dB steps, 7 ranges)|
|Absolute maximum voltage||AC 70 Vrms for one minutes (50 Hz)|
|Residual offset||-60 dB F.S. or less (after calibration, 0 dB Vrms range)|
|Frequency range||DC to 40 kHz|
|Sampling frequency||32 kHz, 44.1 kHz, 48 kHz, 51.2 kHz, 64 kHz, 96 kHz, 102.4 kHz|
|Frequency accuracy||±50 ppm or less|
|AD converter||24-bit (ΔΣ type)|
|Dynamic range||110 dB or
(when analyzed at 40 kHz range, 0 dB Vrms range, 2048 points)
|Harmonic distortion||-90 dB or less (when input at 1 kHz, 0 dB Vrms range, 1 V0-p)|
|Aliasing||-100 dB or less|
|Amplitude flatness||±0.3 dB or less|
|Full scale accuracy||±0.1 dB or less (when 1 kHz input)|
|Amplitude linearity||0.0015 % (to F.S.)|
|Cross talk between channels||-100 dB or less (when 1 kHz input)|
|Gain accuracy between channels||±0.3 dB or less (in the same range)|
|Phase accuracy between channels||±0.4° or less (DC to 20 kHz), ±0.8° or less (20 kHz to 40 kHz)|
|External sample input||1 ch, AC/DC selectable, ±12V, input impedance 100 kΩ, 0 to 300 kHz (with out-of-band filter) 0.5 to 1024 P/R, The clock divider function is available. Use the internal clock divider function when exceeding 4 kHz of the frequency.|
|External trigger input||1 ch, AC/DC selectable, ±12V, input impedance 100 kΩ, 0 to 300 kHz (with out-of-band filter)|
Output Terminal for Input Signal Monitoring section
|Terminal for Input signal monitor||3.5 Φstereo
CF-3650:for ch1/2, ch3/4
CF-3850:for ch5/6, ch7/8
1 Vrms F.S. ±1.0% (when 1 kHz, 1MΩ loaded)
Panel LED section
Touch panel computer section
|CPU||Intel® AtomTM N270 1.6 GHz|
|HDD||160 GB (with a green access lamp)|
|Network||10 BASE/100 BASE-TX/1000 BASE-T X1|
|LCD||15-inch, 1024 x 768 dots XGA with brightness adjustment|
|Touch panel||Resistance file method (Windows multi-touch function is not available.)|
|USB I/F||USB 2.0 (High Speed) ×2|
|OS||Microsoft Windows 7 Professional 32-bit|
|Power requirement||Approx. 16 VDC|
|Operating temperature/humidity range||+5 to +40 °C (humidity: 20 to 80 % RH, with no condensation)|
|Storage temperature range||-10 to +55
°C (including lithium ion secondary battery)
(humidity: 20 to 80 % RH, with no condensation)
|CE marking||EN61010-1: 2010 (3rd), EN61326-1|
|Cooling fan||Not provided (natural air cooling)|
|Countermeasure against instantaneous power failure||Equipped with lithium-ion secondary battery|
|Internal battery-charging circuit||Provided|
|Backup time for instantaneous power failure||30 minutes max.|
|Power consumption|| CF-3650:Approx. 110 VA (100 VAC, AC adapter is used.)
CF-3850:Approx. 130 VA (100 VAC, AC adapter is used.)
|Outer dimensions|| CF-3650:410(W)×314(H)×150(D) mm, not including protruded
CF-3850:410(W)×314(H)×180(D) mm, not including protruded section)
|Weight|| CF-3650:Approx. 10 kg
CF-3850:Approx. 11.5 kg
|Accessories||AC adapter, Power cable for AC adapter, remote controller (with cable), front panel protection cover, lithium ion secondary battery cell (treatment against instantaneous power failure), instruction manual|
Output section (CF-0375 option)
|Number of channels||1|
|Impedance||50 Ω±10 %|
|Voltage amplitude||±10 mV to ±10 V|
|Offset voltage||±10 V|
|Maximum output current||10 mA|
|Frequency range||0 to 40 kHz|
|Conversion rate||32, 44.1, 48, 51.2, 102.4 kHz|
|D/A converter||24-bit (ΔΣ type)|
|Signal type||Sine, swept sine, pseudo random, random, impulse, time record data|
|THD||Sine wave (when at 1 kHz, 1 Vo-p) -75 dB or less|
|Applicable FFT analysis length||64 to 16384 (power-of-two)|
|Voltage amplitude accuracy||±0.2 dB or less (when at 1 kHz, 1 Vo-p, 1 MΩ load)|
|Frequency accuracy||±50 ppm or less|
|Digital filter (smoothing filter)||10th order ellipse (base band), 6th order ellipse (zoom)|
|Digital filter (Octave band filter)||6th order Butterworth (1/1, 1/3 octave)|
|Pink filter||Analog filter-3 dB/OCT. ±1.0 dB (prescribed at 20Hz to 20kHz)|
|Burst function||Provided (continuous/single-shot: 1 ms to 32 s / Number of burst cycles: 1 to 32767)|
|Taper function||Provided (1 ms to 32 s), invalid when the burst function is ON.|
|Power cable for AC adapter||1|
|Front panel protection cover||1|
|Windows® 7 license||1 (DVD-ROM)|
|Lithium ion secondary battery cell||1 (treatment against instantaneous power failure)|
|Rated input voltage||100 to 240 VAC|
|Input frequency||50/60 Hz|
|Output voltage||15 VDC|
|Output current||4 A|
Remote controller (DS-0395 option)
･F1 to F3 are use-defined switches.
|LED||Green LED x 5 (displaying the status), red LED x 1 (displaying A/D over)|
|Connection cable||2 m|
|External dimension||45 (W) x 25 (H) x 117 (D) mm (not including protruded section)|
Configuration examplesMain unit (CF-3650 or CF-3850)
Configuration examplesMain unit (CF-3650 or CF-3850)
|CF-0375||1ch Signal output module|
*accommodates the main unit of the CF-3650/CF-3850 and accessories.
Software option (pre-installable software)
|DS-0223WA||1/1 and 1/3 Real-time Octave Analysis|
|DS-0224A||1/N Real-time Octave Analysis *The DS-0223WA is required.|
|DS-0227A||Field Balancing Software|
|DS-0243A||Octave Tracking Analysis *The DS-0223WA is required.|
|DS-0244A||Campbell Plot Function *The DS-0222WA is required.|
|DS-0250WA||Throughput Disk Function|
Function (available to WAV, TXT, DADiSP, MATLAV, UFF)
*The DS-0250WA is required.