The SDI-12 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. The Verifier performs complex tests quickly, saving you time and money.

The Verifier can also simulate an SDI-12 sensor and monitor the SDI-12 bus to help test SDI-12 data recorders.

The Verifier is a PC based system with three components:

  1. Hardware to interface a USB port to the SDI-12 bus.    This interfaces PCs to SDI-12 sensors and data recorders;
  2. Firmware to communicate with the PC and SDI-12 devices, execute tests, time events, simulate sensors, and control the SDI-12 bus;
  3. PC software to test SDI-12 sensors and recorders (runs on Microsoft ® Windows (XP, Vista, and Windows 7).

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 when taking a measurement;
  • the ability of sensors to take concurrent measurements;
  • the correct use and timing of service requests;
  • the proper use of parity;
  • data retention after taking a measurement;
  • the correct computation of CRC values;
  • extended commands;
  • and more ...

The Verifier also:

  • monitors the SDI-12 bus and displays all commands and responses exchanged between an SDI-12 recorder and sensors;
  • operates as an SDI-12 data recorder;
  • simulates an SDI-12 sensor to help test data recorders;
  • has an SDI-12 transparent mode;
  • can have numerous sensors connected to it;
  • has a detailed user's guide;
  • functions 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.