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page 21
APPENDIX A: Special Functions
A.1 Communication between PR350 B and IA/PA350 B/PA250 B
It is possible to remote control the functions in the IA250 B or the PA250 B, so that
the operational mode of PA/IA250 B always will follow the operational mode of the
PR350 B. Following functions in the PA/IA250 B can be remote controlled by the
PR350 B.
- two-channel operation
- multi-channel operation
- DIM (display light)
- Enter STBY
- Enter operational mode
For communication connect data cable between DATA I/O port 1 or 2 of the PR350
B and the data port on the PA/IA350 B. Connect a pair of XLR cables between the
two units. And connect 5/6 phono cables, between L,R,SL,SR,C, (SC) of the 2 units.
See the figure next page about cable configuration.
Turn on both units. By first command from PR350 B , e.g. by switching to multi-
channel operation, the PA/IA350B will now slave the functions of the PR350 B and
thereby choose the right operational mode.
When the PR350 B is in multichannel mode (DTS, Dolby Digital or ProLogic II) the
PA/IA250 is set into 5/6 channel mode with 5/6x 120W output, using the (6)5.1 input
connected to the (6)5.1 output in the PR350 B, by (6)5 phono cables.
When the PR350 B is in stereo mode, the PA/IA350B is set into 2 channel mode with
2x 350W output, using the balanced interconnection, for a fully balanced signal path.
Please notice: To avoid that ground fields are disturbing the phono connections, all
the cables (including XLR cables) between the PR350B and PA350B or other power
amplifier should lay closely together. Use e.g. cable binders to collect the cables.