USB-2405 4-CH 24-Bit 128kS/s Dynamic Signal Acquisition USB 2.0 Module Introduction The USB-2405 is a 24-bit high-performance dynamic signal acquisition USB module equipped with 4 analog input channels providing simultaneous sampling at up to 128 kS/s per channel. The USB-2405 also features software-selectable AC or DC coupling input configuration and built-in high precision 2 mA excitation current to measure integrated electronic piezoelectric (IEPE) sensors such as accelerometers and microphones. The USB-2405 delivers high precision, DC and dynamic measurement performance with very low temperature drift. The onboard 24-bit Sigma-Delta ADC supports anti-aliasing filtering, suppressing modulator and signal out-of-band noise and providing usable signal bandwidth of the Nyquist rate, making it ideal for high dynamic range signal measurement in vibration and acoustic applications. The USB-2405 supports digital and analog trigger sources and flexible trigger modes, including post, delay, middle, gated, and pre-triggering for efficient data acquisition with no need for post-processing. The USB2405 is USB bus-powered and equipped with BNC connectors and removable spring terminals for easy device connectivity. Features ■■ ■■ ■■ ■■ ■■ ■■ ■■ Hi-Speed USB 2.0 SB bus powered U 24-bit Sigma-Delta ADC with built-in anti-aliasing filter 4-CH simultaneous sampling analog inputs, up to 128kS/s AC or DC input coupling, software selectable Analog or digital triggering Supports 2mA excitation output on each analog input channel for IEPE sensor measurement ■■ Full auto-calibration ■■ Ready-to-use testing application (U-Test) provided IO connector definition AI 3 AI 2 AI 0 ■OS Information • Windows XP, Windows 7/8 x64/x86 USB-2405 ■ Software Compatibility • LabVIEW, MATLAB, Visual Studio.NET ■ Software Recommendations • U-Test, DAQBench, DAQMaster Standard Shipped Accessories • 4-pin removable spring terminal • 2 M USB Type A to USB Mini-B cable with lockable connector DGND GPIO 1 GDND GPIO 0 AI 1 Ready-to-Use ADLINK U-Test Utility ■Ready-to-Use ADLINK U-Test Utility U-Test is a free ready-to-use testing program allowing configuration and test data acquisition with no programming required. Easy out-of-the-box configuration and generation of simple functions , including full data monitoring, logging and FFT analysis is easy and fast, with no programming requirement. No programming necessary for operation and full function testing of ADLINK USB DAQ/DIO • Module stand • Rail-mount kit Intuitive interface for data monitoring and logging, waveform generation, and digital I/O control panel use as virtual instrument Useful analysis functions, such as direct cursor measurement of traces and real-time FFT analysis Data exportable to Microsoft Excel for offline analysis Supports auto-recollection of configuration settings for future use USB DAQ Specifications Analog Input General Specifications Channels 4 (simultaneous sampling) ADC Resolution 24 Bit ADC type Delta-sigma Sampling rate 1 kS/s to 128 kS/s • Flatness Input Signal Frequency (fin) Flatness 20 Hz to 20 kHz ±0.01 dB 20 Hz to 46.4 kHz ±0.15 dB Input range ±10V FIFO buffer size 2k samples per channel Input Signal Frequency (fin) Crosstalk Input Configuration Differential or pseudo-differential 1 kHz -102 dB 200 kΩ (between positive input and negative input) 16.93 kΩ (Between negative input and chassis ground) 46.4 kHz -95 dB Input impedance Input coupling • Crosstalk • System noise AC or DC, software selectable Mode AI Noise Integrated Electronic Piezoelectric (IEPE) Current: 2 mA or 0 mA, software selectable IEPE compliance: 24V High-Resolution (< 52.734 kHz) 50µVrms High-Speed Mode (52.734 kHz to 128 kHz) 65µVrms Over-voltage protection ±60V Input common mode range ±10V Input Signal Frequency (fin) SFDR Trigger source Analog or digital, software selectable 1kHz 104 dB Trigger mode Post trigger, delay trigger, middle trigger, gated trigger, pre-trigger, post or delay trigger with re-triggering Data Transfer Programmed I/O, continuous (bulk transfer mode) Offset Error (mV) Gain Error (%) Typical: ±0.15mV Typical: ±0.15% Max. ±0.3mV Max. ±0.3% ■■ AC Dynamic Performance (typical, 25°C) • Dynamic Range (Vin = -60 dBFS, fs=102.4kS/s) Input Signal Frequency (fin) Dynamic range 1 kHz 100 dB Differential Pseudodifferential THD THD+N 20 Hz to 20 kHz -94 dB -91 dB 20 Hz to 46.4 kHz -89 dB -88 dB 20 Hz to 20 kHz -92 dB -88 dB 20 Hz to 46.4 kHz -85 dB -85 dB • CMRR AC (20 Hz to 1 kHz) Channels 2 programmable function I/O Compatibility 3.3V / TTL (single-ended) Initial status Input (pull low) Input voltage Logic low: VIL = 0.8 V max; IIL = 0.2 mA max. Logic high: VIH = 2.0 V min.; IIH = 0.2 mA max. Output voltage Logic low: VOL = 0.8 V max; IIL = 0.2 mA max. Logic high: VOH = 2.0 V min.; IIH = 24 mA max. Over-voltage protection -2V ~ +7V Supporting modes •Static digital input/output •Pulse output, max. frequency: 4 MHz •Frequency/Event counter, max. frequency: 4MHz •Digital trigger IN •Synchronization sample clock IN Data Transfer Programmed I/O 60 dB • Bandwidth -3dB bandwidth ■USB-2405 4-CH 24-Bit 128kS/s Dynamic Signal Acquisition USB 2.0 Module 0.49 * sampling rate AC cut-off frequency (-3dB) 0.4 Hz AC cut-off frequency (-0.1dB) 2.4 Hz Optional Accessories ■RST-20P One pair of 20-pin removable screw terminals ■USB-2M-L 2 M USB Type A to USB Mini-B cable with lockable connector Digital Input / Output • THD, THD+N (Vin = 8.9 Vpk) Input Signal Frequency (fin) Ordering Information • SFDR (Vin = -1 dBFS) ■■ DC accuracy (25°C) Input configuration ■■ I/O connector: Four BNC connectors and 4-pin removable spring terminals ■■ Operating temperature: 0 to 55°C (32 to 131˚F) ■■ Storage temperature:-20 to 70°C (-4 to 158˚F) ■■ Power requirements: 5V @ 400mA (USB bus powered) ■■ Dimensions (not including connectors and stand): 115 mm (W) x 150 mm (D) x 40 mm (H) (4.5” x 5.91” x 1.57”) ■■ Relative humidity: 5% to 95%, non-condensing Note: Function I/O shares the same I/O pins, such that only one of these modes can be selected at a time. Updated June 25, 2013. ©2013 ADLINK Technology, Inc. All Rights Reserved. All specifications are subject to change without further notice.