Size w/mounting tabs 0.9''H x 1.0''W x 2.0''D Power Requirements NONE REQUIRED Power Pass Through 250mA @ 1,000 feet (300 meters) on 24 AWG1 Amp @ 100 feet (30 meters) on 24 AWG Video Input 1 vpp composite videomonochrome or color Output Balanced low voltage current loop Modular Jack Standard RJ45 System Video Format RS170, NTSC, PAL, SECAM,CCIR (Color or B/W) Video Input 1 vpp composite videomonochrome or color Operating Frequency DC to 10 MHz Common Mode Rejection >60 dB typ. Temperature Range 0 degrees C to +85 degrees C Humidity Range 0 to 98%, non-condensing Twisted Pair Connection RJ45 modular connector Transient Immunity Built-in Wire Spec 26 to 12 AWG Unshielded Twisted Pair (UTP) DC Loop Resistance 51 Ohms/1,000 feet (max) (51 Ohms/300 meters) Normal Capacitance 17pF/ft. Impedance 100 Ohms +/- 20% UTP Category 2 or better The Nitek Video and power balun combiner provides video and camera power over a single CAT5 for CCTV twisted pair video transmission up to 750 feet (225 meters) in conventional UTP analog Video applications, 100 meters in TIA/EIA 568 applications. The VB31AT is a unique UTP power and video balun which provides an economical means of sending video and camera power over a standard category cable. Video is sent over one pair and camera power is sent over two of the remaining pairs. A mini-coax pigtail with male BNC is used on the VB31AT. A pair of wires are provided for power connection. Connections to the Category cable are made via an RJ45 connector. The VB31AT passive UTP power and video balun combiner provides the same high immunity to noise and interference as all of the Nitek baluns for CCTV transmission. This simplified wiring scheme provides a convenient method of powering the camera and allowing for quicker and easier installations. The RJ45 modular jack uses standard 568B wiring so spare network cables can be used. The VB31AT is a UTP transceiver that provides another Security Transmission Solution from Nitek.