What you will learn from this user's guide ......................5 Conventions in this user's guide ......................... 5 Where to find more information ......................... 5 Chapter 1 Introducing the USB-3105 ........................6 Overview: USB-3105 features ..........................6 USB-3105 block diagram ........................... 7 Chapter 2 Installing the USB-3105 ........................
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USB-3105 User's Guide EU Declaration of Conformity ......................19...
Preface About this User's Guide What you will learn from this user's guide This user's guide describes the Measurement Computing USB-3105 data acquisition device and lists device specifications. Conventions in this user's guide For more information Text presented in a box signifies additional information and helpful hints related to the subject matter you are reading.
Overview: USB-3105 features This user's guide contains all of the information you need to connect the USB-3105 to your computer and to the signals you want to control. The USB-3105 is part of the Measurement Computing brand of USB-based data acquisition products.
Installing the hardware To connect the USB-3105 to your system, connect the USB cable to an available USB port on the computer or to an external USB hub connected to the computer. Connect the other end of the USB cable to the USB connector on the device.
Status LED The Status LED indicates the communication status of the USB-3105. It flashes when data is being transferred, and is off when the USB-3105 is not communicating. This LED uses up to 10 mA of current and cannot be disabled.
Screw terminal banks The USB-3105 has two rows of screw terminals—one row on the top edge of the housing, and one row on the bottom edge. Each row has 28 connections. Use 16 AWG to 30 AWG wire gauge when making screw terminal connections.
DIO5 54 DIO CTL DIO6 55 DGND DIO7 56 +5V Figure 5. USB-3105 signal pinout Analog voltage output terminals (VOUT0 to VOUT15) The screw terminal pins labeled are voltage output terminals (see Figure 5). The voltage VOUT0 VOUT15 output range for each channel is software-programmable for either bipolar or unipolar. The bipolar range is ±10 V, and the unipolar range is 0 to 10 V.
Configure as an output (master mode) to send the internal D/A LOAD signal to the SYNCLD pin. You can use the SYNCLD pin to synchronize with a second USB-3105 and simultaneously update the DAC outputs on each device. Refer to Synchronizing multiple units on page 13.
DAC outputs of both devices. Do the following. Connect the SYNCLD pin of the master USB-3105 to the SYNCLD pin of the slave USB-3105. Configure the SYNCLD pin on the slave device for input to receive the D/A LOAD signal from the master device.
100 Hz/#ch max, system dependent Note 1: The USB-3105 output voltage level defaults to 0V whenever the output voltage range is reconfigured. The USB-3105 output voltage level will also default to 0V: 1) Whenever the host PC is reset, shut down or suspended.
The maximum differential non-linearity specification applies to the entire 0 to 70 °C temperature range of the USB-3105. This specification also accounts for the maximum errors due to the software calibration algorithm (in Calibrated mode only) and the DAC8554 digital to analog converter non-linearities.
Note 7: This is the total quiescent current requirement for the USB-3105 which includes up to 10 mA for the status LED. This does not include any potential loading of the digital I/O bits, +5V user terminal, or the VOUTx outputs.
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October 10, 2017, Norton, Massachusetts USA Test Report Number: EMI4712.07/EMI5193.08 Measurement Computing Corporation declares under sole responsibility that the product USB-3105 is in conformity with the relevant Union Harmonization Legislation and complies with the essential requirements of the following applicable European Directives:...
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