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Table of Contents
Related Manuals for Omega OM-USB-2404-60
Summary of Contents for Omega OM-USB-2404-60
- Page 3 Conventions in this user's guide ......................... 4 Where to find more information ......................... 4 Safety guidelines..............................4 Chapter 1 Introducing the OM-USB-2404-60 ......................5 Functional block diagram ........................... 5 Chapter 2 Installing the OM-USB-2404-60 ......................6 What comes with your shipment? ........................6 Hardware ..................................
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Page 4: About This User's Guide
Email: das@omega.com Safety guidelines You can connect hazardous voltages to the OM-USB-2404-60 device's screw terminals. A hazardous voltage is a voltage greater than 42.4 V or 60 VDC to earth ground. Take the following precautions if you connect hazardous voltages to the OM-USB-2404-60: Caution! Ensure that hazardous voltage wiring is performed only by qualified personnel adhering to local electrical standards. -
Page 5: Introducing The Om-Usb-2404-60
OM-ACC-102 connector kit. The USB 2.0 high-speed driver transfers data at rates up to 480 Mbps. The OM-USB-2404-60 is powered by the +5 volt USB supply from your computer. No external power is required. -
Page 6: Installing The Om-Usb-2404-60
To connect the OM-USB-2404-60 to your system, connect the USB cable to an available USB port on the computer or to an external USB hub connected to the computer. Connect the other end of the USB cable to the USB connector on the device. -
Page 7: Calibrating The Hardware
OM-USB-2404-60 User's Guide Installing the OM-USB-2404-60 Allow the OM-USB-2404-60 to operate for at least 30 minutes before using the device. This warm up time is required to achieve the specified rated accuracy of measurements. Calibrating the hardware The OM-USB-2404-60 is shipped fully calibrated. Calibration coefficients are stored in EEPROM. Return the device to Omega Engineering when calibration is required. -
Page 8: Functional Details
Figure 3. Rear panel Screw terminals (CH0 to CH3) The OM-USB-2404-60 has four 2-terminal detachable screw terminals for connection to four isolated analog inputs. The maximum sampling rate is 50 kS/s per channel, and the input voltage range is ±60 V, nominal. The channels may be sampled individually or simultaneously. -
Page 9: Usb Connector
Connect the negative signal of the signal source to the CH – screw terminal. The following figures show the connections between the OM-USB-2404-60 and both a grounded signal source and a floating signal source. Figure 5. Connecting a grounded signal source... -
Page 10: Analog Input Circuitry
Categories. Analog input circuitry The OM-USB-2404-60 analog input channels are floating with respect to earth ground and to each other. The incoming analog signal on each channel is conditioned, buffered, and then sampled by a 24-bit Delta-Sigma ADC. Each channel provides an independent signal path and ADC, enabling you to sample all four channels simultaneously. -
Page 11: Stopband Bandwidth
Alias-free bandwidth Any signal that appears in the alias-free bandwidth of the OM-USB-2404-60 is not an aliased artifact of signals at a higher frequency. The alias-free bandwidth (0.453 · is defined by the ability of the filter to reject frequencies above the stopband frequency. -
Page 12: Specifications
Chapter 4 Specifications All specifications are subject to change without notice. Typical for the range 0 to 60 °C unless otherwise noted. All voltages are relative to the CH– signal on each channel unless otherwise noted. Analog input Table 1. Analog input specifications Parameter Conditions Specification... -
Page 13: Accuracy
OM-USB-2404-60 User's Guide Specifications Full performance requires connections to a USB 2.0 Hi-Speed host controller and USB 2.0 high- Note 1: speed hubs.) The maximum sample rate may be lower on USB 1.1 ports. Accuracy Table 2. Analog input accuracy... -
Page 14: Safety Voltages
OM-USB-2404-60 User's Guide Specifications Safety voltages Table 7. Safety specifications (Note 3) Parameter Conditions Specification Channel-to-earth ground isolation Continuous 250 Vrms, Measurement Category II (Note 4) Withstand 2,300 Vrms, verified by a 5 sec dielectric withstand test Channel-to-channel isolation Continuous...