4-Channel Analog Voltage Input USB Data Acquisition Module

The new OM-USB-2404 Series are high-speed USB data acquisition modules featuring four 24-bit simultaneous analog voltage inputs with a sampling rate of 50 kS/s per channel, and a ±10V (OM-USB-2404-10) or ±60V (OM-USB-2404-60) input range. These modules are fully compatible with both USB 1.1 and USB 2.0 ports. An anti-alias filter removes noise that may be present in the signals prior to conversion.

Full 250 Vrms channel-to-channel and channel-to-ground isolation protects the module and computer from ground spikes, and ensures a reliable data stream. An on-board LED indicates the status of the device. Field connections are made to four 2-pole, detachable screw terminals. The USB 2.0 high-speed driver transfers data at rates up to 480 Mbps. Power for the OM-USB-2404 Series comes from the 5V USB supply from your computer. No external power is required.

Software The OM-USB-2404 Series modules ship with an impressive array of software, including the new TracerDAQ®, a full-featured, out-of-the-box data logging, viewing, and analysis application. Driver support and detailed example programs are included for Universal Library programming libraries for Microsoft® Visual Studio® programming languages, and other languages, including DASYLab®, and ULx for NI LabVIEW® (comprehensive library of Vls and example programs compatible with 32-bit and 64-bit LabVIEW v8.5 through 2013) and InstaCal™ installation, calibration and test utility-powerful solutions for programmers and nonprogrammers alike. These modules operate under Microsoft Windows® XP (32-bit only) and VISTA/7/8 (32-bit and 64-bit) operating systems.

SPECIFICATIONS
ANALOG INPUT
Number of Channels: 4
A/D Converter Resolution: 24-bit
A/D Converter Type: Delta-Sigma with analog pre-filtering
Sampling Mode: Simultaneous
Sample Rate Range (fs)
    Minimum: 1.613 kS/s
    Maximum: 50 kS/s Full performance requires connections to a USB 2.0 high-speed host controller and USB 2.0 high-speed hubs. The maximum sample rate may be lower on USB 1.1 ports.
Sample Rates (fs): (fM/256)/n, where n = 1, 2, … 31
Internal Master Timebase (fM)
    Frequency: 12.8 MHz
    Accuracy: ±100 ppm maximum
Input Voltage Ranges (CH+ to CH-)
    OM-USB-2404-10: ±10V, nominal ±10.52V, typical ±10.3V, minimum
    OM-USB-2404-60: ±60V, nominal ±62.64V, typical ±61.5V, minimum
Overvoltage Protection: ±100 V
Input Coupling: DC
Input Impedance (CH+ to CH-): 1 M?
Input Noise
    OM-USB-2404-10: 70 µV rms
    OM-USB-2404-60: 320 µV rms
Gain Drift: ±5 ppm/°C
Offset Drift
    OM-USB-2404-10: ±24 µV/°C
    OM-USB-2404-60: ±150 µV/°C
Post Calibration Gain Match (Channel-to-Channel 20 kHz): 0.22 dB maximum
Crosstalk (1 kHz): -130 dB
Phase Mismatch (Channel-to-Channel)
    OM-USB-2404-10: 0.075°/kHz maximum
    OM-USB-2404-60: 0.045°/kHz maximum
Phase Nonlinearity (fs = 50 kS/s): 0.11° maximum
Input Delay
    OM-USB-2404-10: 38.4/fs +3 µs
    OM-USB-2404-60: 38.4/fs +2.6 µs
Passband Frequency: 0.453 · fs
Passband Flatness (fs = 50 kS/s): ±100 mdB maximum
Stopband Frequency: 0.547·fs
Stopband Rejection: 100 dB
Alias-Free Bandwidth: 0.453·fs
-3 dB Pre-Filter Bandwidth (fs = 50 kS/s): 24.56 kHz
Common Mode Rejection Ratio (CMRR), fin = 60 Hz:
    OM-USB-2404-10: 126 dB
    OM-USB-2404-60: 116 dB
Spurious Free Dynamic Range (SFDR), 1 kHz, -60 dBFS: -128 dBFS
Total Harmonic Distortion:
    1 kHz, -1 dBFS: -99 dB
    1 kHz, -20 dBFS: -105 dB

GENERAL
Operating Temperature Range: 0 to 60°C (32 to 140°F), 10 to 90% RH non-condensing
Storage Temperature Range: -40 to 85°C (-40 to 185°F), 5 to 95% RH non-condensing
Communications: USB 2.0 Hi-Speed mode (480 Mbps) is recommended; otherwise USB 1.1 full-speed mode (12 Mbps)
Current Consumption From USB: 500 mA maximum
Channel-to-Earth Ground Isolation
    Continuous: 250 Vrms (measurement category II for measurements performed on circuits directly connected to the
    electrical distribution system)
    Withstand: 2300 Vrms (verified by a 5 second dielectric withstand test)
Channel-to-Channel Isolation
    Continuous: 250 Vrms (measurement category II for measurements performed on circuits directly connected to the
    electrical distribution system)
    Withstand: 1390 Vrms (verified by a 5 second dielectric withstand test)
Signal I/O Connector: Screw terminals
Screw Terminal Wiring: 16 to 28 AWG copper conductor wire with 7 mm (0.28") of insulation stripped from the end
Torque for Screw Terminals: 0.22 to 0.25 N·m (1.95 to 2.21 lb·in)
Maximum Altitude: 2000 m (6562')
Dimensions: 114 L x 140 W x 38 mm H (4.5 x 5.5 x 1.5")
Weight: 544 grams (1.2 lb)