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Peek 2070L Operating Manual - Quality Traffic Systems

Peek 2070L Operating Manual - Quality Traffic Systems

Section 1 —

Section 1 — GlossaryEIA-232 ................EIA-485 ................EPROM................FCU......................FLASH..................FP.........................GND .....................Hz.........................I/O ........................IEEE.....................IRQ.......................IACK....................LCD......................LED ......................LINESYNC ...........lsb.........................LSB ......................mA........................MC68302..............MC68360..............MIL-STD...............Model 2070 ..........EIA Bipolar Data Transmission Standard. EIA-232uses a single wire for each signal. A positivevoltage is used for one binary state while a negativevoltage is used for the other. (Logic 1 = the negativelevel = “Mark”, Logic 0 = the positive level =“Space”) EIA-232 also defines the connector pinnumbers and differs from EIA-574 in the type ofconnector used and pin out.EIA Balanced Differential Data TransmissionStandard. EIA-485 uses a pair of wires, typically atwisted pair, to transmit Data and Inverted Data.EIA-485 allows multiple devices to be connected inparallel (multi-drop) on one data cable overdistances of several miles. (Formerly known as RS-485, or RS485.)Electrically Programmable ROMField Controller UnitA +5 VDC powered IC Memory Device withnonvolatile, electrically erasable, programmable,IOOK read/write minimum cycles and fast accesstime featuresFront PanelGroundHertz, Pure Unit Of Frequency In Cycles PerSecondInput/OutputInstitute of Electrical & Electronic EngineersInterrupt RequestInterrupt AcknowledgeLiquid Crystal DisplayLight Emitting Diode60 Hz square wave synchronized to zero crossingsof power lineleast significant bitLeast Significant BytemilliampereMotorola IMP (Integrated Multiprotocol Processor)Motorola QUICC (Quad Integrated CommunicationController) ProcessorMilitary StandardController Unit2 • Model 2070L Operating Manual

Section 1 — GlossaryModel 2070-1.......Model 2070-2.......Model 2070-3.......Model 2070-4.......Model 2070-7.......Module .................MOV.....................Motherboard ........msb......................MSB .....................PCB .....................RAM.....................ROM ....................RTS......................RX........................RXC .....................RXD .....................SDLC ...................SRAM ..................STBY ...................SYNC...................SYSCLK...............SYSFAIL ..............SYSRESET..........TIA .......................TEES ...................TTL ......................TX ........................TXC......................TXCI.....................TXCO...................TXD......................UL ........................VAC .....................VCC .....................VDC .....................CPU Module seriesField I/O Module seriesFront Panel Assembly (FPA) series (aka ‘Displays’)Power Supply Module series (either 2070-4A or2070-4B)Asynchronous Serial Communications Module(ASCM) seriesA functional unit part of an assemblyMetal Oxide Varistor (form of surge protectiondevice)A printed circuit connector interface boardmost significant bitMost Significant BytePrinted Circuit BoardRandom Access MemoryRead-Only MemoryRequest To SendReceiveReceive ClockReceive DataSynchronous Data Link ControlStatic RAMStandbySynchronousSystem ClockSystem FailSystem ResetTelecommunications Industry AssociationTransportation Electrical Equipment SpecificationsTransistor-Transistor LogicTransmitTransmit ClockTransmit Clock InputTransmit Clock OutputTransmit DataUnderwriter’s Laboratories, Inc.Volts, Alternating Current line voltageDC supply voltageVolts, Direct CurrentModel 2070L Operating Manual • 3

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