Xylem H-424MS V1.1 Manuel d'utilisateur

Spread SpectrumSDI-12 Radio BridgeModelH-424MSOwner's ManualVersion 1.1(for system revision “C” or higher)D E S I G N A N A L Y S I

remain on for 30 seconds. Before the 30 second inactivity time elapses, issue a “aM!” or othercommand to your sensor and check for proper response.

1.9 FCC RestrictionsThis equipment has been tested and found to comply with the limits for a Class B digital device,pursuant to Part 15 of the FCC Rul

1-8 OperationH-424MS

Chapter 2SDI-12 Command and Response Protocol2.1 SDI-12 Command and Response ProtocolNormally the H-424MS operates as a transparent SDI-12 to SDI-12

Example of a H-424MS "aM!" command: Command Response Time Values Description------------- --------------------- ------- -------- ----------

2.3 Send Data CommandThe Send Data command returns sensor data generated as the result of previous "aM!", “aC!” or"aV!" commands.

Example of a H-424MS "aV!" command: Command Response Time Values Description------------- --------------------- ------- -------- ----------

2.5 Send Acknowledge CommandThe Send Acknowledge Command returns a simple status response which includes the address ofthe sensor. Any measurement d

Example of a H-424MS "aI!" command: "a12 DAA H-424vvvS#nn

Example of a H-424MS Extended "Read Wake Interval" command:Command Response Time Values Description------------------- ---------------------

D E S I G N A N A L Y S I S A S S O C I A T E S , I N C . 75 West 100 South, Logan, Utah 84321 Phone: (435) 753-

Example of a H-424MS Extended "Write Wakeup Interval" command:Command Response Time Values Description------------------- ------------------

Appendix ASpecificationsProtocolLocal: SDI-12Remote: SDI-12Type: Transparent SDI-12.Works with all SDI-12commands including extendedand V1.2 commands.

2-2 SDI-12 Command and Response ProtocolH-424MS

User Agreement/WATERLOG® Warranty1. NATURE OF THE PRODUCTThis agreement accompanies an interface module comprising firmware, circuitry and other elec

(c) What DESIGN ANALYSIS Will DoDESIGN ANALYSIS will repair the PRODUCT or will endeavor to provide a replacement ofsame within a reasonable period o

Chapter 1Operation1.1 IntroductionThe WATERLOG® H-424MS is a spread spectrum SDI-12 radio bridge. The radio link is easy touse and works with any SDI

Normally the H-424MS operates as a transparent SDI-12 to SDI-12 bridge. However, in order towake the remote end of the link from sleep the master H-4

1.4 Programming Your Data RecorderYou must prepare your data recorder to receive and record SDI-12 data from the sensorsattached to the data recorde

The H-424MS modules comes from the factory with the following settings:SDI Address: 0Wakeup Interval: 15 SecondsInactivity Timer: 30 SecondsThese set

1.7 Making SDI-12 ConnectionsThe H-424MS enclosure has a 4-pin SDI-12 connector. The power for the H-424MS and theradio is supplied by the SDI-12 +12