Symetrix Airtools Control I/O Quick Start Manual page 5

Quick Start Guide
Control I/O
RS-485 Termination, MIDI I/O, Device Address Quick Reference
RS-485 Termination
Both the ARC and the Control I/O feature an RS-485 termination jumper. Jumper J17 inside the Control I/O by the RS-485 jack
enables and disables termination. Jumping pins 1 and 2 = terminated, pins 2 and 3 = open. For maximum signal integrity, follow
the termination guidelines below:
RS-485 TERMINATION GUIDELINES
Daisy chain length
0 - 200 ft.
200 - 1000 ft. (if powering over CAT-5)
> 1000 ft. (or if not powering over CAT-5) Terminate at Control I/O and at the last ARC in each chain
For star configurations, terminate at the Control I/O.
MIDI I/O
With the DB15 MIDI I/O "joystick" port, the Control I/O can function as a MIDI Continuous Controller (CC) to RS-485 Controller
translator. The DB15 port uses a standard to (2) DIN 5 MIDI IN and MIDI OUT cable adapter. (Adapter not included). The
adapter is the same that most all computer sound cards with a joystick port use and is available at many computer and music
supply outlets. (Please see the Studio Matrix Designer online help for information on how to map a MIDI Controller number to an
RS-485 Controller number in a Studio Matrix DSP design.)
Device Address Quick Reference
Every RS-485 device (including all ARCs and Control I/Os) connected to the same Studio Matrix Ring must be uniquely
identified. You may use the pictorial diagrams below to quickly set up and understand the device address DIP switches on the
Control I/O. Any time the DIP switches are changed, the unit must be power cycled for the changes to take effect.
NOTE: For the sake of space, only switch settings for the first 8 addresses are pictured.
An address of up to 31 is possible (all DIP switches down). For systems containing
32 total Control I/O's, an address of zero (0) is available (all DIP switches UP).
Address 1
Address 5
Note: The Control I/O contains field-upgradable firmware. Upgrading is facilitated by DIP switch #2 labeled "UPGRADE / RUN".
Unless instructed by Symetrix Technical Support personnel or a Symetrix Technical Bulletin, this switch should remain in the
"RUN" position.
To download the latest version of Studio Matrix Designer, the Windows application
Control I/O DIP Switch Settings
RS-485 RS-485
ADDR ADDR
1 2 4 8 16 1 2 4 8 16
Address 2
RS-485 RS-485
ADDR ADDR
1 2 4 8 16 1 2 4 8 16
Address 6
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Termination
No termination required
Terminate at Control I/O
RS-485
ADDR
1 2 4 8 16
Address 3
RS-485
ADDR
1 2 4 8 16
Address 7
Symetrix
5/11
RS-485
ADDR
1 2 4 8 16
Address 4
RS-485
ADDR
1 2 4 8 16
Address 8
TM