Entube DE-HB-S Specification Sheet for Verivolt Ultra-Compact, High-Bandwidth, Differential Voltage Sensor The Entube-DE-HB series was designed to enable measurement of fast high voltage signals in industrial and research environments. The output of the Entube-DE-HB is a linearly scaled down version of the voltage difference between its two input terminals. This output can then be processed by a computer based measurement system. The Entube-DE-HB series covers multiple input dynamic ranges with a 20MHz bandwidth, and 0.2% accuracy. In addition to multiple dynamic ranges, the Entube-DE-HB can be ordered to have a single-ended (-S) or a differential-pair (-D) output. The single-ended version has a BNC connector at the output, and can be selected to be ±5V or ±1V. The differential-pair version has a clamp-cage connector at the output, and can be selected to be ±10V or ±1V. In both cases, the higher range is intended to be used with a high input impedance digitizer with a standard ±5 or ±10V dynamic range. The ±1V output range is intended to drive a 50 Ohm load (Single-Ended version) or a 100 Ohm load (Differential version) in applications where signal reflections must be avoided. SPECIFICATIONS Entube DE-HB-S HARDWARE DESCRIPTION The high voltage input signal connects to the sensor via two clamp cage connectors. Use appropriate wire jacket and gauge, as well as creepage distance. For superior noise immunity, it is recommended to use a twisted pair from the high voltage source to the input of the sensor. Input Inpedance Accuracy (percentage of reading) Max total phase shift at 60Hz Max Input delay Withstanding common mode surge voltage Withstanding differential mode surge voltage Input-Output non-linearity Output voltage Gain temperature drift Common mode rejection at 60Hz Power Supply Voltage Output type Output Offset Voltage Output impedance Mounting Type Spring cage Gain (Using 10V standard output voltage) Outer Dimensions Integrated sensor noise (Referenced to output) < 80 ppm See notes ±40 ppm/°C 82 dB 8V to 28V Single-ended or differential pair < ±0.5mV (on ±10V signal) 50Ω (-S) , 100Ω (-D) Environmental Operating temperature Storage temperature Connections for Entube DE-HB A spring cage connector is used to input power to the sensor. A single post screw terminal is used to ground the secondary side of the sensor. The signal out of the sensor comes in a BNC connector (singleended version), or a spring cage connector (differential-pair version). If signal reflections are a concern, place the sensor as close as possible to the high voltage signal source, and use the appropriate cable and load termination. If using a digitizer with BNC inputs, use a 50Ω coaxial cable and a 50Ω terminating load at the digitizer end. If using a digitizer with differential inputs, use a 100 Ω twisted pair and a 100 Ω terminating load at the digitizer end. The schematic on the figure above shows how to connect the Entube-DE-HB-S between the high voltage signal source and the digitizer.

MERCHANICAL DIMENSIONS HARDWARE CONFIGURATION A. Ground sensor by connecting a wire from the ground to the standoff located next to the two spring connectors. Connect 5V external power source to power the unit. B. Insert a wire pair between each of these connectors and a corresponding current input on the DAQ. The polarity of the signal out is aligned with the input signals. C. On the primary side, connect the plus and minus signals. Use standard twisted pair. THIS SENSOR IS NOT A SAFETY DEVICE AND IS NOT INTENDED TO BE USED AS A SAFETY DEVICE. This sensor is designed only to detect and read...