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The SDI-12 Verifier is a PC based system to test SDI-12 sensors and to help test SDI-12 data loggers for compliance with the SDI-12 standard. The Verifier gives you assurance that your SDI-12 sensor is in compliance with the SDI-12 standard. If your sensor is not in compliance, it will help you find the problems. |
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The SDI-12 Verifier runs on Microsoft ® Windows. It performs complex tests quickly, saving you time and money.
The SDI-12 Verifier has two components:
The Verifier tests SDI-12 sensors by sending commands to the sensor. It verifies all responses, checking for the correct responses within the specified time constraints. It helps test SDI-12 recorders by simulating an SDI-12 sensor.
The SDI-12 Verifier connects to a PC with a USB cable. This USB interface requires that a virtual COM port (VCP) driver is on your PC. Your PC, however, may already have a VCP driver. If not, visit Future Technology Devices International Ltd. to learn more about these drivers. There is no charge for the VCP driver. The device in the SDI-12 Verifier is the FT232R.
The Verifier can test:
all SDI-12 commands;
all versions of SDI-12 (1.0, 1.1, 1.2, and 1.3)
the timing of SDI-12 bus transactions;
the ability of sensors to respond to a break;
the ability of sensors to wake up within 100 milliseconds after a break;
the ability of a sensor to respond within 15 milliseconds after receiving the last byte of a valid command;
the ability of sensors to return to low power standby mode;
the ability of sensors to reset upon receipt of a break;
the ability of sensors to take concurrent measurements;
and more.
The Verifier can also:
monitor the SDI-12 bus and display all commands and responses exchanged between an SDI-12 recorder and sensors;
operate as an SDI-12 data recorder;
simulate an SDI-12 sensor;
function as a interface between a PC and one or more SDI-12 sensors using a PC communications program such as HyperTerminal, without using the Verifier's PC software.
When testing an SDI-12 data recorder the Verifier simulates an SDI-12 sensor, letting you chose which SDI-12 commands to respond to. This gives you confidence that your data recorder correctly issues the needed SDI-12 commands and accepts valid responses from a sensor.
The Verifier also works as an SDI-12 bus monitor. It shows you exactly what commands and responses are exchanged between recorders and sensors. This often shows problems quickly.
verifier.zip (firmware, version 1.6, for serial port Verifiers)
USBVerifier.zip (firmware, version 1.6 for USB port Verifiers)
FirmwareLoaderSetup.zip (application to load firmware into USB port Verifiers)
See the release notes for information about improvments (software and hardware) made to the SDI-12 Verifier.
View sample screens from the PC software.
Visit the web site for the SDI-12 Support Group to learn more about the SDI-12 Specification. This link takes you to the SDI-12 Support Group's web-site, where you can get a copy of the SDI-12 Specification.
For customers that continue to use the older MS-DOS based Verifier, click verifier31.zip to download version 3.1 of the PC software for that product. Version 3.1 was released in February of 2003.
The Verifier costs $ 1,195.00. This includes the SDI-12 Verifier hardware, software, computer cables, and a user's guide. The user's guide is embedded in the PC software as a Windows help file.
The SDI-12 Verifier is a product of:
NR Systems, Inc.
165 East 500 South
River Heights, Utah 84321
(435) 752-4200
FAX(435) 752-1691
nrsys@comcast.net
Updated November 19, 2008
Copyright © 2003, 2008 NR Systems, Inc.
Member, Better Business Bureau of Utah
