Dynamic Signal Analyzers

Description features:Features
24-bit ADC per analog input
4 analog inputs, ¡À10V on 640 (¡À60V max without damage)
5 analog inputs, ¡À40V on 650 (¡À60V max without damage)
AC/DC coupling per channel
IEPE current source per channel (20V compliance)
Any analog input can be a tachometer input
Pseudo-differential input
Total harmonic distortion of -100 dB (typical)
Channel-to-channel phase matching of Spurious-free dynamic range of 108 dB (typical)
USB2 and 10/100BaseT Ethernet versions
Model 650 for rotating machinery analysis
Model 640 for noise, vibration, and harshness testing
24-bit DAC analog output (640 only)
Analog outputs: sine, swept sine, random, burst, arbitrary
Analog Output Signal-to-Noise Ratio: 100 dB (typical)
8-bit digital IO port
TEDS support
Power input of 6 to 16 VDC
Analysis rates are software programmable from 20 Hz to 40 kHz
General Specifications
Environment
Operating Temperature
640u and 650u: -30? to 70?
640e and 650e : 0? to 50?C
Humidity: o? to 95% RH, non-condensing
Vibration: IEC 600068-2-64
Shock: IEC 600068-2-27
Emissions: EN61326, 89/366EEC
Safety: EN61010
Ingress: IP40
Power Consumption
640e and 650e: 5.0W max
640u and 650u : 2.5W max
Input Power Range: 6 to 16 VDC
PC Communication
640e and 650e: 10/100BaseT Ethernet
640u and 650u : USB2.0
Dimensions: 142.24mm W x 180.34mm D x 38.1mm H (5.6"x7.1"x1.5")
Weight: 675g (1.5Ibs)
Warm-up: 30 minutes to rated specifications
Analog Specifications
Analog Measurements
ADC Converter Resolution: 24bits
ADC Converter Type: Delta-sigma
Sample Rates: Up to 105,468 sample per second (Software dependent)
Sample Rates Accuracy: ¡À50ppm
Channels
640e and 650e: 4 input channels
640u and 650u : 5 input channels
Input Connector: 1 BNC per channel
Input Impedance 640e/640u650e/650u
High to ground 200k Ohm II 130p 800k Ohm II 120p
Low to ground1k Ohm 1k Ohjm
High to low 201k Ohm 801k OhmInput Cuoling: DC, AC, or AC + IEPE; software programmable per channel basis
High-Pass Filter (AC Coupling Cutoff)
640e and 650e: 1.0 Hz
640u and 650u : 0.1 Hz
Input Range
640e and 650e: ¡À10V peak
640u and 650u : ¡À40V peak
Input Protection: ¡À 60V max without damage
Over-Range Indication: Software
Low-Pass Filter: Software programmable per channel
Type: Antialiasing hardware 3-pole 360 kHz, software selectable FIR filter. Any aliasing above 27 MHz is lost in the noise floor of 64k FFT.
Amplitude Accuracy
640e/640u650e/650u
AC at 1kHz¡À0.07 dB typ ¡À0.12 dB max ¡À0.1 dB typ ¡À0.15dB max
DC¡À(0.01% of reading + 2mv)¡À(0.2% of reading +15mv)Amplitude-3dB: 0.49 x sample rate
Amplitude Flatness: ¡À0.05 dB typ ¡À0.10 dB max DC to 20kHz
Total Harmonic Distortion: -100 dB typical 1 kHz-97 dB typical 10 kHz
SFDR Including Harmonics: 108 dB typical DC to 50kHz
SFDR -60dB: 128dB typical DC to 50 kHz
Channel to Channel Crosstalk: Channel to Channel Phase Matching
640e and 640e: 650u and 650u : Common Mode Rejection Ratio: -70dB typ -55dB max at 1kHz
Wideband Noise
640e and 640u: 650e and 650u : IEPE Bias Source (640, 640u, 650, 650u channels 1 to 4)
Current: 2.1 mA, 21V compliance (on/off software programmable per channel)
Impedance: >255k Ohm
IEPE Fault Detection Thresholds: 20V(open)
IEPE Fault Indication: Software indicator, per channel
Analog Output (640e, 640u only)
Chnnels: 1
Signal Connection: BNC
Frequency Range: DC to 45 kHz (-0.25dB)
Frequency Accuracy: ¡À50ppm
DAC Resolution: 24bit
DAC Update Rate: 93.75 KSps
DAC Type: Delta-sigma; initial value 0.0V for 640e and 650e; not guaranteed for 640u and 650u
Amplitude settings: 0 to 7V p-p or 0 to 3.5V peak
Amplitude Accuracy at 1kHz: ¡À 0.05dB typ ¡À0.12 dB max
Amplitude Flatness (DC to 20kHz): ¡À0.02dB typ ¡À0.1dB max
SNR (DC to 20kHz): 100dB typ 90dB max
Maximum Load: 1k Ohm (50Ohm with external power)
Waveform Modes: Sine, swept sine, random, burst, arbitrary
Output Impedance: 50 Ohm
Tachometer Inputs
Any analog input channel may be used as a tachometer inp