Installing The Spare Boards Kit - Teledyne WORKHORSE Operation Manual

May 2015

Installing the Spare Boards Kit

The Spare Boards Kit has been set up so that you will replace all three of the H-ADCP boards at once. This
is done so that you do not have to risk damaging the individual boards while swapping in individual
boards. The heading, pitch, and roll sensors have all been calibrated (the temperature sensor is an inde-
pendent calibration and not changed by these new boards). Once you have replaced the original boards,
place them back in the Spare Board Kit box and contact Teledyne RD Instruments Customer Service De-
partment so that you can return them for repair.
Before handling either the Spare Board Kit or the original Board Set, always wear an earth-
grounding static protection strap. The electronics in the H-ADCP are very sensitive to static
discharge. Static discharge can cause damage that will not be seen immediately and will result
in early failure of electronic components.
TRDI assumes that a qualified technician or equivalent will perform all of the following work.
The Spare Boards Set will allow your system to perform to the same velocity specifications as your original
set. However, there is an offset error in the compass that can be as great as ±1.5 degrees. This error
CANNOT be removed by doing the Field Calibration procedure (AF command) even though you MUST do
this as part of the installation. The additional ±1.5 degrees can only be removed by TRDI at the factory. In
most cases, the total compass error will still be within our original specification of ±5.0 degrees. The only
way to be sure that you have smaller errors than this specification is to perform your own local compass
verification and correct any errors you find during post processing of the data.
Page 68
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
WorkHorse H-ADCP Operation Manual