USB-5201 USB-based 8-Channel Thermocouple Input Device and Data Logger User's Guide Document Revision 7, June, 2008 © Copyright 2008, Measurement Computing Corporation
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Table of Contents Preface About this User’s Guide .......................................................................................................................7 What you will learn from this user’s guide......................................................................................................... 7 Conventions in this user’s guide ......................................................................................................................... 7 Where to find more information ..
USB-5201 User's Guide Disconnecting the USB-5201 from the computer ............................................................................................. 21 Transferring binary data after a logging session ............................................................................................... 21 Converting binary data after a logging session ................................................................................................. 21 Chapter 5 Specifications .........................
Preface About this User’s Guide What you will learn from this user’s guide This user’s guide explains how to install, configure, and use the USB-5201 so that you get the most out of its USB-based temperature measurement features. This user’s guide also refers you to related documents available on our web site, and to technical support resources that can also help you get the most out of these boards.
Chapter 1 Introducing the USB-5201 Overview: USB-5201 features This user's guide contains all of the information you need to connect the USB-5201 to your computer and to the signals you want to measure. The USB-5201 is a USB 2.0 full-speed, thermocouple input device that is supported under popular Microsoft® Windows® operating systems. The USB-5201 is fully compatible with both USB 1.1 and USB 2.0 ports.
USB-5201 User's Guide Introducing the USB-5201 USB-5201 block diagram USB-5201 functions are illustrated in the block diagram shown here. External power required for data logging operations Precision 5V Ref. USB USB (PC) (for data logging) 8 or Compact Flash connector USB Microcontroller I/O Isolator Isolated Micro SPI 24-bit A/D (CH0, CH1) Input mux. 24-bit A/D (CH2, CH3) Input mux.
USB-5201 User's Guide Introducing the USB-5201 Connecting a USB-5201 to your computer is easy Installing a data acquisition device has never been easier. The USB-5201 relies upon the Microsoft Human Interface Device (HID) class drivers. The HID class drivers ship with every copy of Windows that is designed to work with USB ports. We use the Microsoft HID because it is a standard, and its performance delivers full control and maximizes data transfer rates for your USB-5201.
Chapter 2 Installing the USB-5201 What comes with your USB-5201 shipment? The following items are shipped with the USB-5201. Hardware The following items should be included with your shipment. USB-5201 with memory card USB cable (2 meter length) External power supply – 2.5 watt USB adapter for data logging operations. MCC part number USB Power Adapter.
USB-5201 User's Guide Installing the USB-5201 Additional documentation In addition to this hardware user's guide, you should also receive the Quick Start Guide (available in PDF at www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf). This booklet supplies a brief description of the software you received with your USB-5201 and information regarding installation of that software. Please read this booklet completely before installing any software or hardware.
USB-5201 User's Guide Installing the USB-5201 If the LED turns off If the LED is lit but then turns off, the computer has lost communication with the USB-5201. To restore communication, disconnect the USB cable from the computer, and then reconnect it. This should restore communication, and the LED should turn back on. Configuring the USB-5201 All hardware configuration options on the USB-5201 are programmable with software. Use InstaCal to set the thermocouple type for each channel.
Chapter 3 Sensor Connections The USB-5201 supports type types J, K, R, S, T, N, E, and B thermocouples. Thermocouple selection The thermocouple type you select depends on your application needs. Review the temperature ranges and accuracies of each type to determine which is best suited for your application.
USB-5201 User's Guide Sensor Connections USB-5201 screw terminal descriptions Pin 1 2 3 4 5 6 7 8 9 10 Signal Name RSVD NC C0H C0L NC RSVD C1H C1L GND RSVD Pin Description Reserved, Do Not Use Not connected CH0 sensor input (+) CH0 sensor input (-) Not connected Reserved, Do Not Use CH1 sensor input (+) CH1 sensor input (-) Ground Reserved, Do Not Use CJC sensor 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 RSVD NC C2H C2L NC RSVD C3H C3L GND RSVD +5V GND DIO0 DIO1 DIO2 DIO3 Pin 27 28 29 30 31 32 3
USB-5201 User's Guide Sensor Connections CJC sensors The USB-5201 has two built in high-resolution temperature sensors. One sensor is located on the right side of the package, and one sensor is located on the left side. Thermocouple connections A thermocouple consists of two dissimilar metals that are joined together at one end. When the junction of the metals is heated or cooled, a voltage is produced that correlates to temperature.
USB-5201 User's Guide Sensor Connections Digital I/O connections You can connect up to eight digital I/O lines to the screw terminals labeled DIO0 to DIO7. You can configure each digital bit for either input or output. All digital I/O lines are pulled up to +5 V with a 47 kΩ resistor (default). You can request the factory to configure the resistor for pull-down to ground if desired.
Chapter 4 Functional Details Thermocouple measurements A thermocouple consists of two dissimilar metals that are joined together at one end. When the junction of the metals is heated or cooled, a voltage is produced that correlates to temperature. The USB-5201 hardware level-shifts the thermocouple’s output voltage into the A/D’s common mode input range by applying +2.5 V to the thermocouple’s low side at the C#L input. Always connect thermocouple sensors to the USB-5201 in a floating fashion.
USB-5201 User's Guide Functional Details External components The USB-5201 has the following external components, as shown in Figure 5. Screw terminals USB connector LED CompactFlash slot with memory card Screw terminal Pins 27 to 52 LED Screw terminal Pins 1 to 26 Data logging button USB connector CompactFlash® memory card Figure 5. USB-5201 component locations Screw terminals The device's four banks of screw terminals are for connecting temperature sensors and digital I/O lines.
USB-5201 User's Guide Functional Details LED function when the USB-5201 is connected to an active USB port LED Illumination Indication Steady green Blinks continuously The USB-5201 is connected to a computer or external USB hub. Data is being transferred. Upon connection, the LED should flash a few times and then remain lit (indicates a successful installation). Initial communication is established between the USB-5201 and the computer. The USB-5201 is not connected to an active USB port.
USB-5201 User's Guide Functional Details External power supply The external power supply is used to power the USB-5201 during data logging operations. This power supply is a 2.5 W USB power adapter. Disconnecting the USB-5201 from the computer You don't need to shut down your computer to disconnect the USB-5201. Refer to the instructions below when disconnecting the USB-5201 from your computer's USB port.
Chapter 5 Specifications Typical for 25 °C unless otherwise specified. Specifications in italic text are guaranteed by design. Analog input section Table 1. Generic analog input specifications Parameter Conditions Specification Thermocouple Four dual 24-bit, Sigma-Delta type 8 differential 500 VDC minimum between field wiring and USB interface Thermocouple sensor type ±0.
USB-5201 User's Guide Specifications Accuracy Thermocouple measurement accuracy Table 3. Thermocouple accuracy specifications, including CJC measurement error Sensor Type Maximum error Typical error Temperature range J ±1.499 °C ±0.643 °C ±1.761 °C ±0.691 °C ±2.491 °C ±1.841 °C ±2.653 °C ±1.070 °C ±1.779 °C ±0.912 °C ±1.471 °C ±0.639 °C ±1.717 °C ±0.713 °C ±1.969 °C ±0.769 °C ±0.507 °C ±0.312 °C ±0.538 °C ±0.345 °C ±0.648 °C ±0.399 °C ±0.650 °C ±0.358 °C ±0.581 °C ±0.369 °C ±0.462 °C ±0.245 °C ±0.
USB-5201 User's Guide Note 6: Specifications The analog inputs are configured to run continuously. Each channel is sampled twice per second. The maximum latency between when a sample is acquired and the temperature data is provided by the USB unit is approximately 0.5 seconds. Throughput to CompactFlash memory card is limited to 1 S/s per channel. Digital input/output Table 5.
USB-5201 User's Guide Specifications Microcontroller Table 8. Microcontroller specifications Type Two high performance 8-bit RISC microcontrollers Data Logging Table 9. Data logging specifications Standalone power supply Memory card type Supplied memory card Memory card host access File systems supported Log file format Logging rate Data items logged Logging start methods Logging stop methods Logging status indication USB Power Adapter 2.
USB-5201 User's Guide Specifications Real time clock Table 10. Real time clock specifications Battery backup Accuracy CR-2032 lithium coin cell, replaceable ±1 minute per month USB +5V voltage Table 11. USB +5V voltage specifications Parameter Conditions Specification USB +5V (VBUS) input voltage range 4.75 V min. to 5.25 V max. Power Table 12. Power specifications Parameter Conditions Specification USB enumeration Continuous mode <100 mA 500 mA max. Connected to a self-powered hub.
USB-5201 User's Guide Specifications USB specifications Table 13. USB specifications USB device type Device compatibility USB cable type USB cable length USB 2.0 (full-speed) USB 1.1, USB 2.0 Self-powered, 500 mA consumption max A-B cable, UL type AWM 2527 or equivalent. (min 24 AWG VBUS/GND, min 28 AWG D+/D-) 3 meters max. Environmental Table 14.
USB-5201 User's Guide Specifications Screw terminal pin out Table 17.
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