Diagnostic port of Focal 903

Diagnostic Port of Focal 903

 Focal 903 is very robust fiber optic unit and with the facility to remotely monitor temperature and DB loss in fibers of subsea unit with the help of Diagnostic port.

So while sitting in control Van we know temperature of both units and Db loss in our fibers.

We can record a log when telemetry is good and compare during troubleshooting like fiber loss and temperature of units.

Procedure to Use Diagnostic port.

DB9 female connector on console unit is the diagnostic port of focal 903.

Prepare a short whip between your PC to Focal connector, It will be straight connection

Install  Focal software (Which comes in Focal Disk )on your laptop or PC."This Software cannot be installed without internet connection"

Switch on Focal 903

Click on VDM icon on desktop. If you can’t see VDM icon on desktop please go to C drive -Program files-VDM (Folder)-VDM icon.

Once you click on icon it will start monitoring all parameters like Db loss in fiber and uplink loss/downlink loss. and temperature of both subsea and console unit.

So if we make a log of parameters during normal condition’s it will be easy when we have to troubleshoot system.

The readings which you see regarding loss in uplink and downlink will not be accurate until and unless to calibrate your software,You need to take dBm readings from both transmitter and receiver and enter it manually in software by clicking on calibrate,After this only loss readings will be accurate.