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Canary MicroMux User Manual

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MicroMux
Multiplexer
USER'S GUIDE
Disclaimer: The following document is provided to assist users with the installation, operation
and training in the use of our products. This document and our products are intended to be used
by technically qualified personnel. Contained herein is information that is proprietary to Canary
Systems and may not be reproduced or copied in any form, nor disclosed to outside parties by
any means whether directly or indirectly, without the written consent of Canary Systems. This
document is subject to change without notice and Canary Systems assumes no responsibility for
errors, omissions or misinterpretation. Furthermore Canary Systems makes no warranty as to the
suitability of this information and/or products for any given application or use.
Copyright©2009-2010 Canary Systems, Inc. All Rights Reserved.
Micromux_usersguide.doc Revision A, 02-10
Canary Systems, Inc.
75 Newport Road, Suite 211
New London, NH 03257 USA
Voice: (603) 526-9800
Fax: (603) 526-9004
e-mail:
support@canarysystems.com
web: www.canarysystems.com

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Summary of Contents for Canary MicroMux

  • Page 1 Systems and may not be reproduced or copied in any form, nor disclosed to outside parties by any means whether directly or indirectly, without the written consent of Canary Systems. This document is subject to change without notice and Canary Systems assumes no responsibility for errors, omissions or misinterpretation.

  • Page 2: Table Of Contents

    2.3 Instrument Connection ..............5 2.4 MultiLogger Software Configuration ..........5 2.5 CR10X Program Example.............. 6 2.6 CR1000 Program Example ............7 2.7 Using the MicroMux with the VW Comm Module......7 2.8 Enclosure Installation ..............9 2.9 Input Protection................9 Section 3 Troubleshooting...

  • Page 3: Section 1 Introduction

    Section 1 - Introduction 1.1 Overview The MicroMux expands the number of instruments that may be read by most all types of 5v/12v dataloggers to 4 channels by 4 wire, or 8 channels by two wire, depending on the internal switch settings and the type of sensor being read.

  • Page 4: Operation Details

    The MicroMux is controlled by the Datalogger Controller using 2 digital control signals. The operation of the MicroMux is simple enough so that virtually any device capable of controlling 2 digital TTL/CMOS type signals can be used to control the multiplexer. Generally speaking, the timing diagram depicted below describes how the 2 digital signals are used to control the MicroMux.

  • Page 5: Datalogger Connection

    Section 2 – MicroMux Operation and Installation 2.2 Datalogger Connections The MicroMux is connected to the Controller or MultiLogger Mux Terminal Board (or ML MUX TB) using the screw terminals. The common screw terminal block is located on the left side of the terminal strip...

  • Page 6: Cr10X Program Example

    2.5 CR10X Program Example The following example illustrates how to write custom programs for the CR10X to read instruments connected to the MicroMux. The example assumes a 4 Channel Mode MultiMux reading 4 vibrating wire gages and their respective thermistors.

  • Page 7: Cr1000 Program Example

    Multilogger Software to configure the VW Comm to be connected to 4 or 8 sensors through the MIcroMux. The VW Comm can be used with a radio, and MicroMux as a remote node for 4 or 8 instruments.
  • Page 8 Section 2 – MicroMux Operation and Installation 'Transmit ATDTnn (where nn = radio address), Receive OK (up to 10 seconds) SerialOut (Com1,"ATDT0129"+Chr(13),"OK",1,1000) Delay(0,1000,mSec) 'Transmit ATCN, Receive OK (wait up to 10 seconds) SerialOut (Com1,"ATCN"+Chr(13),"OK",1,1000) 'Wake up the VW Comm - Try for 5 seconds ScratchLoc(1) = SerialOut (Com1,"0!","0",50,100)

  • Page 9: Enclosure Installation

    MicroMux shield (S) for proper protection. Most Vibrating wire instruments also have lightning protection components. The Enable and Clock inputs can be connected to 12 volts directly without damaging the MicroMux. The connections to the datalogger should be disconnected and insulated from contacting other electrical connections.

  • Page 10: Section 3 Troubleshooting

    Section 3 – Troubleshooting 3.1 Troubleshooting Flowchart If you cannot obtain readings using the MicroMux or the readings are unstable then see the troubleshooting flowchart below for help in determining the nature of the problem. Start Does the MicroMux Is 12V and G...

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