The 17428 has been retired. It provided a CD containing the PakBus Operating System (OS) for Hydra Probe and our Device Configurator Utility (DevConfig). DevConfig is required to download the new OS to the CR23X. The PakBus OS for Hydra Probe allowed the CR23X to measure soil moisture, salinity, and temperature using the Stevens Hydra Probe. It also provided the PakBus communication protocol and stored data in a table format. Burst and Tektronix 1502 TDR measurements are omitted.