User's Manual

13. Software updates can be downloaded from the website

http://www.prestoncinema.com/downloads.html. To load an update into the HU3:

· Install the boot loader program from the CD which is shipped with the FI+Z

system to a PC.

· Make sure that the Hand Unit is not powered.

· Connect the serial cable 4651(serial connector to 4-pin Lemo) between the serial

port of the pc and the Serial receptacle on the rear cover of the HU3.

· For laptops without a serial connector, use a USB to serial adapter.

· To initiate the update, open the HU3 update program on your PC. While holding

the iris set button down, press the Power button of the HU3. Release all buttons.

· The HU3 display will show the message “Ready to load”.

· The display on the PC should now report that it has found a connection to the HU3

and ask whether you want to proceed with the update. Choose yes. After the

program has completed the update, you can remove the serial cable from the HU3.

14. Remote Iris Unit

A socket is provided on the bottom of the HU3 for an external, cable connected, iris

control. When the external iris control is connected, the slide control on the FIZ will be

disabled.

15. Focus Ring Light. Under low light conditions, two white LED’s will automatically

illuminate the Focus Ring.

Fig. 14.1 Remote Iris Box p/n 4020