This document is intended to give a test procedure that will allow Pogle users to confirm the functionality of an Ursa telecine interface. The tools needed to complete these tests include an oscilloscope, a terminal utility running on a PC or similar and two RS422 ëShorting Plugsí These are made using 9 pin bucket connector dee type male connector. Link pins 2 and 8, link pins 3 and 7.

The Interface must have the code loaded from the Pogle and syncs must be connected to the workstation. WVD (Write Vertical Drive) or pseuso WVD must be connected to the interface rack.

There are two RS422 connectors on the Pogle interface rack:
E.S. Bus:- Used to establish coms. and used for tallies etc. 9 pin  female dee marked J05 on the back of the Pogle interface.
Fast bus:- Data transmission. 9 pin female dee marked J06 on the back of the Pogle interface.

Plug terminal into debug port on front of interface crate.
The debug port transmits continuous ëEís.
Put a shorting plug into ES bus port and ëEís stop transmitting.
The Pogle doesnít know at this point whether an Ursa is connected or not, so Fast bus is off and there is no data transmission.
Press the ë3í key on the terminal keyboard and the message ëfake Ursa oní appears on the terminal screen. When tk controls are moved e.g. green balls, packets of data are sent out the Fast bus port. Monitor pins 3 and 8 with an oscilloscope for bursts of data. (ëFake Ursa oní turns on the Fast bus flag and removes checking for a reply from the tk.)
Press the ë3í key again and message ëfake Ursa offí is displayed. Normal mode is resumed with the exception that Fast bus is enabled. Now, as soon as a tk control is moved the first byte of a packet of data can be seen on pins 3 and 8 and a T for time out appears on the debug screen.
Finally, put a shorting plug in the Fast bus port socket and ëscope data packets on the bus when tk controls are moved. This time there are no time outs on the terminal display. The ES bus transmits small amounts of data provided the Fast bus shorting plug is still in place.

Please see the document "Terminal Connect" for details of the settings to use for connecting a terminal to the Pogle debug port.