HDHazard Distance (HD) is the distance measured from the projection lens at which the intensity or the energyper surface unit becomes lower than the applicable exposure limit on the cornea or on the skin. The light beamis considered (to be) unsafe for exposure if the distance from a person to the light source is less than the HD.HDHazard Distance (HD) is the distance measured from the projection lens at which the intensity or the energyper surface unit becomes lower than the applicable exposure limit on the cornea or on the skin. The light beamis considered (to be) unsafe for exposure if the distance from a person to the light source is less than the HD.DMXDMX-512 Lighting protocol over RS-485 interface. Carries information of 512 channels from a lightingcontroller to lighting devices. Standardized by USITT.RS232An Electronic Industries Association (EIA) serial digital interface standard specifying the characteristics of thecommunication path between two devices using either D-SUB 9 pins or D-SUB 25 pins connectors. Thisstandard is used for relatively short-range communications and does not specify balanced control lines. RS-232 is a serial control standard with a set number of conductors, data rate, word length and type of connectorto be used. The standard specifies component connection standards with regard to computer interface. It isalso called RS-232-C, which is the third version of the RS-232 standard, and is functionally identical to theCCITT V.24 standard. Logical '0' is > + 3V, Logical '1' is < - 3V. The range between -3V and +3V is thetransition zone.RS422An EIA serial digital interface standard that specifies the electrical characteristics of balanced (differential)voltage, digital interface circuits. This standard is usable over longer distances than RS-232. This signalgoverns the asynchronous transmission of computer data at speeds of up to 920,000 bits per second. It is alsoused as the serial port standard for Macintosh computers. When the difference between the 2 lines is < - 0.2Vthat equals with a logical '0'. When the difference is > +0.2V that equals to a logical '1'..Transport latencyThe added delay in the image processing chain. The value is the number of lines relative to the outputresolution.LatencyThe total time from the first pixel is coming in on an input source, until the first light representing that pixel isvisible on the screen. This includes the transport delay. The value is normally given in milliseconds.DHCPDynamic host configuration protocol. DHCP is a communications protocol that lets network administratorsmanage centrally and automate the assignment of IP addresses in an organization's network. Using theR5911443 /02 UDM 183Glossary
