VMEbus Boards AVME942x-i Isolated Digital Input (32, 64, or 96 inputs) These boards provide an economical method for isolating and interfacing DC voltage digital input signals to the VMEbus. These digital input boards provide optical isolation between individual channels and from the VMEbus for maximum protection. Built-in optocouplers eliminate the expense of external relay panels and simplify installations. Individual Connector Specifications channels are optically isolated from each other P1: DIN 41612 96-pin Type C, Level II. (channel-to-channel) and from the VMEbus to offer Digital DC Voltage Inputs P2: DIN 41612 64-pin Type C, Level II, rows A & C. Channels: 32, 64 or 96 depending on model. maximum flexibility for field connections. P3, P4: DIN 41612 64-pin Type B, Level II. Input voltage range: 4 to 25V DC or 20 to 55V DC. Interrupts are available on eight front access or P2 Input on/off threshold: Ordering Information channels. This allows the user to take advantage of the 2V DC typical, 4V DC maximum (4 to 25V range), VMEbus’s ability to service interrupts for a group of 12V DC typical, 20V DC maximum (20 to 55V). I/O Boards critical channels at high speed. Input current: AVME9420-i: 32 inputs (P2 access), 4 to 25V DC 15.8mA DC typical @ 25V (4 to 25V range), Input channel debounce circuitry offers a selectable AVME9421-i: 64 inputs (Front access), 4 to 25V DC 6.5mA DC typical @ 55V (20 to 55V range). time delay to eliminate false signals resulting from con- AVME9421-i-L: Same as AVME9421-i plus LEDs Input response time (excluding debounce): tact bounce commonly experienced with mechanical AVME9422-i: 96 inputs (P2 & front access), 4 to 25V DC ton = 6µS typical at 25°C, relays and switches. Optional LEDs provide visual toff = 60µS typical at 25°C. AVME9422-i-L: Same as AVME9422-i plus LEDs indication of 64 channels’status. Interrupt channels with debounce: 8 channels. AVME9425-i: 32 inputs (P2 access), 20 to 55V DC Input debounce: Four ranges (jumper-selectable for AVME9426-i: 64 inputs (Front access), 20 to 55V DC Features 8 channels); 7 to 8µS, 336 to 384µS, 672 to 768µS, or AVME9426-i-L: Same as AVME9426-i plus LEDs 1.344 to 1.536mS.■32, 64, or 96 digital input channels AVME9427-i: 96 inputs (P2 & front access), 20 to 55V DC 4 to 25V or 20 to 55V DC input LED “on”indicators: 64 green LEDs for front panel inputs AVME9427-i-L: Same as AVME9427-i plus LEDs (-L option only). ■All inputs are isolated from VMEbus Software (see Page 81) Environmental 90SW-API-VXW■Bidirectional inputs accept either Operating temperature: 0 to 70°C (32 to 158°F). ® VxWorks software support package positive (+) or negative (-) DC voltage Isolation: Withstands 1500V AC dielectric strength test for 60 seconds without breakdown (250V AC or 354V DC Accessories (see Page 87)■Interfaces to TTL and CMOS logic continuous) between all channels and the VMEbus. 125V 6985-32DI AC or 125V DC continuous between individual channels.■Optional LEDs indicate channel status Isolated digital I/O panel, 32 input channels Power: 6985-16DI ■Buffers contain hysteresis (all channels) +5V DC: 2.0A maximum (all channels ON with LEDs) Isolated digital I/O panel, 16 input channels +12V DC: 0.0mA (not used). ■Adjustable debounce circuitry 9944-x Cable, 64-pin female connectors at both ends. (on 8 inputs, front access or P2) VME Compliance Links VME board front connector to 6985-32DI panel. Meets VME Specifications per revision C.1 dated ■Vectored interrupts for change-of-state, level/polarity, Specify length, x, in feet (12 feet max). October 1985 and IEC 821-1987. or pattern detection (on 8 inputs, front access or P2) 9948-x Data transfer bus: A24/A16:D16/D08 (EO) DTB slave. Cable, 64-pin female connectors at both ends. Address modifier codes: 29H, 2DH, 39H, 3DH. Links VME board P2 connector to 6985-16DI panel. Specify length, x, in feet (12 feet max). Memory map: standard or short address space occupying 1K byte. Interrupts: I(1-7) request levels; D08 (O) RORA.VMEbus access time: 600nS typical (all registers; measured from the falling edge of DSx to the falling edge of DTACK). Acromag, Inc.  PO Box 437, Wixom, MI 48393  Phone: 248-624-1541  Fax: 248-624-9234  solutions@acromag.com  www.acromag.com 78 VMEbus Boards