Measurement-computing USB-2527 Manual do Utilizador

USB-2527 User's Guide Installing the USB-2527 10 Installing the USB-2527 To connect the USB-2527 to your system, turn your computer on, and con

USB-2527 User's Guide Installing the USB-2527 11 Caution! Avoid redundant connections. Ensure there is no signal conflict between SCSI pins an

USB-2527 User's Guide Installing the USB-2527 12 68-pin SCSI connector differential and single-ended pin outs (P5) The 68-pin SCSI connector—la

USB-2527 User's Guide Installing the USB-2527 13 68-pin SCSI connector pin out (labeled P5 on the board) 8-channel differential mode Signal na

USB-2527 User's Guide Installing the USB-2527 14 TB-100 terminal board connector to SCSI connector pin out SCSI connector pin out assignments

USB-2527 User's Guide Installing the USB-2527 15 40-pin header connector pin outs Analog channels pin out (J5 and J6) This edge of the header

USB-2527 User's Guide Installing the USB-2527 16 40-pin header connector pinout (labeled J5) 8-channel differential mode Analog channel Pin J

USB-2527 User's Guide Installing the USB-2527 17 40-pin header connector pinout (labeled J6) Analog channel Pin J6 Pin Analog channel NC 1 2

USB-2527 User's Guide Installing the USB-2527 18 Digital ports, counters, timers, DACs, triggers, and pacer clocks pin out (J7 and J8) You can

USB-2527 User's Guide Installing the USB-2527 19 Using C40FF-x cables to obtain 40-pin female connectors In this example, a C40FF-x cable is co

USB-2527 Multifunction Measurement and Control User's Guide Document Revision 6, January, 2011 © Copyright 2011, Measurement Computing Corpor

USB-2527 User's Guide Installing the USB-2527 20 Cabling Use a CA-68-3R 68-pin ribbon expansion cable (Figure 3), or a CA-68-3S (3-foot) or CA-

USB-2527 User's Guide Installing the USB-2527 21 Field wiring and signal termination You can use the following Measurement Computing screw term

22 Chapter 3 Functional Details This chapter contains detailed information on all of the features available from the board, including:  a diagram a

USB-2527 User's Guide Functional Details 23 SCSI - 68 pin (P5) connector The 68-pin SCSI connector includes pins for the following:  16 singl

USB-2527 User's Guide Functional Details 24 USB-2527 block diagram Figure 7 is a simplified block diagram of the USB-2527. This board provides

USB-2527 User's Guide Functional Details 25 Synchronous I/O – mixing analog, digital, and counter scanning The USB-2527 can read analog, digita

USB-2527 User's Guide Functional Details 26 Figure 8. Analog channel scan of voltage inputs example Example: Analog channel scanning of volta

USB-2527 User's Guide Functional Details 27 The acquisition is triggered and the samples stream to the PC via the USB cable. Each analog channe

USB-2527 User's Guide Functional Details 28 Figure 11. Analog and digital scanning, once per scan mode example If the three counter channels a

USB-2527 User's Guide Functional Details 29  Make sure the USB-2527 is mounted on a flat surface.  Be careful to avoid loading down the dig

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USB-2527 User's Guide Functional Details 30 Figure 12. Analog channel scan of voltage inputs and streaming analog outputs example This exampl

USB-2527 User's Guide Functional Details 31 If no analog inputs are being scanned, the digital inputs can sustain rates up to 4 MHz. Higher rat

USB-2527 User's Guide Functional Details 32 Software-based triggering The three software-based trigger modes differ from hardware analog trigge

USB-2527 User's Guide Functional Details 33 Fixed pre-trigger with post-trigger stop event In this mode, you set the number of pre-trigger read

USB-2527 User's Guide Functional Details 34 Counter modes A counter can be asynchronously read with or without clear on read. The asynchronous

USB-2527 User's Guide Functional Details 35 Debounce modes Each channel's output can be debounced with 16 programmable debounce times from

USB-2527 User's Guide Functional Details 36  T2 – At the end of time period T2, the input signal has transitioned high and stayed there for t

USB-2527 User's Guide Functional Details 37 Figure 17. Example of two debounce modes interpreting the same signal Debounce times should be se

USB-2527 User's Guide Functional Details 38 Figure 19. Optimal debounce time for trigger after stable mode Encoder mode Rotary shaft encoders

USB-2527 User's Guide Functional Details 39 The concentric pattern for B has the same number of window pairs as A—except that the entire pat

4 Table of Contents Preface About this User's Guide ...

USB-2527 User's Guide Functional Details 40 Differential applications are not supported. For single-ended applications:  Connect signals A,

USB-2527 User's Guide Functional Details 41 Note that the number of Z-reference crossings can be tabulated. If the encoder was turning in only

USB-2527 User's Guide Functional Details 42 Each signal (A, B) can be connected as a single-ended connection with respect to the common digital

USB-2527 User's Guide Functional Details 43 Setpoint configuration overview You can program each detection setpoint as one of the following: 

USB-2527 User's Guide Functional Details 44 Figure 25. Example diagram of detection signals for channels 1, 2, and 3 Each channel in the scan

USB-2527 User's Guide Functional Details 45 Set output channel  None  Update FIRSTPORTC  Update DAC  Update timerx Update modes  Upda

USB-2527 User's Guide Functional Details 46 Channel Condition State of detect signal Action 5 Below limit A (for channel 5) True When channel 5

USB-2527 User's Guide Functional Details 47 Detection on an analog input, timer output updates Update Mode: Update on True and False Criteria U

USB-2527 User's Guide Functional Details 48 Figure 28. Channel 3 in hysteresis mode Using multiple inputs to control one DAC output Update m

USB-2527 User's Guide Functional Details 49 Detecting setpoints on a totalizing counter In the following figure, Channel 1 is a counter in tota

USB-2527 User's Guide 5 Counter inputs ...

USB-2527 User's Guide Functional Details 50 the DAC pacer clock. For these reasons, avoid streaming outputs on any DAC or pattern digital outpu

USB-2527 User's Guide Functional Details 51 Mechanical drawing Figure 32. Circuit board dimensions

52 Chapter 4 Calibrating the USB-2527 Every range of a USB-2527 device is calibrated at the factory using a digital NIST traceable calibration method

53 Chapter 5 Specifications Typical for 25 °C unless otherwise specified. Specifications in italic text are guaranteed by design. Analog input Table

USB-2527 User's Guide Specifications 54 Note 2: Noise reflects 10,000 samples at 1 MHz, typical, differential short Thermocouples Table 3. TC

USB-2527 User's Guide Specifications 55 Digital input/output Table 5. Digital input/output specifications Number of I/O 24 Ports Three banks of

USB-2527 User's Guide Specifications 56 Input sequencer Analog, digital, and counter inputs can be scanned based on either an internal programm

USB-2527 User's Guide Specifications 57 Trigger sources and modes Table 8. Trigger sources and modes Input scan trigger sources  Single chann

USB-2527 User's Guide Specifications 58 External power Table 11. External power specifications (Note 5) Connector Switchcraft # RAPC-712 Power

USB-2527 User's Guide Specifications 59 68-pin SCSI connector pin outs Table 16. 68-pin SCSI connector pin out (labeled P5 on the board) 16-ch

6 Preface About this User's Guide What you will learn from this user's guide This user's guide describes the Measurement Computing USB

USB-2527 User's Guide Specifications 60 Table 17. 68-pin SCSI connector pin out (labeled P5 on the board) 8-channel differential mode Pin Funct

USB-2527 User's Guide Specifications 61 J5 Table 18. 40-pin header connector pinout (labeled J5 on the board) 16-channel single-ended mode Pin

USB-2527 User's Guide Specifications 62 J6 Table 20. 40-pin header connector pinout (labeled J6 on the board) Pin Function Pin Function 1 NC

USB-2527 User's Guide Specifications 63 J8 Table 22. 40-pin header connector pin out (labeled J8 on the board) Pin Function Pin Function 1 +1

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7 Chapter 1 Introducing the USB-2527 Overview: USB-2527 features The USB-2527 is supported under popular Microsoft® Windows® operating systems. The U

8 Chapter 2 Installing the USB-2527 What comes with your USB-2527 shipment? As you unpack your USB-2527, verify that the following components are inc

USB-2527 User's Guide Installing the USB-2527 9 PS-9V1AEPS-2500 power supply Cables CA-68-3R CA-68-3S (3-feet) CA-68-6S (6-feet) C40