User Manual for SR-4/SR-24/SR-32/Video Slave

1.2 To Control individual machines

Connect the machines to ports A-D on the SR-4 or Sr-24 or ports B-D on the SR-3 using standard 9 pin cables (SR-Tech T5.03). If you wish to connect a machine to port E on the SR-24 you will need a Tx-Rx invert cable (SR-Tech T5.04).

Connect video syncs to the SR/MR Hub and to all machines, the system will not operate correctly without video syncs. Audio machines may be used as slaves with wordclock and master timecode instead of video syncs, the Rosendahl nanosyncs is a good solution to generate both wordclock and video syncs or wordclock from video syncs.

For most installations the controller will now recognise all the machines connected and automatically configured to the connected machines. To select a machine use one of the green keys labelled A..D.

The name and current position of each machine will be displayed on the left of the LCD display. If the incorrect name is displayed then the SR/MR will not auto configure correctly. Check the actual machine setup is correct as some machines (DA-88, DA-98, DA-60, Pro-Tools...) have selectable ID, Section T4.

in the Sr-tech manual will help with the machine setup if we have information on the machine.

You should now be able to control each machine individually, to check the locate enter a valid timecode number (you will see the number in the lower right of the display) and then depress the locate key The selected machine will locate to the point or to pre-roll before the point. In doing this you have learnt one of the main principles of operation, enter the number first then the action key. Also notice that the action (locate) is confirmed in the keyboard display.

You can now record enable any machine as described below and track arm, As machines are record enabled and armed they will be displayed above the keyboard display. If you are brave you can record onto the machine as well. Press play, wait for the lock tally and then depress the record key to enter record, use the play key to exit from record.

1.3 To Control multiple machines

Connect the SR/MR timecode output to any machines that have built in synchronisers, and to any outboard equipment that needs a timecode feed (Best to use a distribution amp). Connect timecode to the desk for automation, you may need to use the separate locked play timecode output for this. You now need to learn some new terms.

1.3.1 Master Machine:

When controlling a group of machines the commands are sent directly to the Master Machine. Normally the video machine is used as the master for fine control when jogging.

1.3.2 Perfect Machine/Virtual Master:

The timecode generator when used as the Master machine, called perfect as there are no timecode dropouts and locates are instantaneous.

1.3.3 Slave/chase Machines:

These machines follow/chase the master machine, the only user commands sent directly to these machines are record, track arming and offset.

1.3.4 Offset:

The positional difference between the master position and required slave normally 00:00:00:00 if the time-codes are identical.

Master Position + Master Offset = Slave Position + Slave Offset

CB Electronics SR/MR User Manual 30 July 2008 SR-User 11