Fixture Linking
You will need a serial data link to run light shows of one or more fixtures using a
Important: Fixtures on a serial data link must be daisy chained in one single line. To comply with the
Maximum recommended serial data link distance: 500 meters (1640 ft.)
Maximum recommended number of fixtures on a serial data link: 32 fixtures
Data Cabling
To link fixtures together you must obtain data cables. You can purchase
DMX DATA CABLE
Use a Belden© 9841 or equivalent cable which meets the specifications for EIA
2-conductor twisted pair plus a shield
Maximum capacitance between conductors – 30 pF/ft. Maximum capacitance between conductor and shield – 55 pF/ft. Maximum resistance of 20 ohms / 1000 ft.
Nominal impedance 100 – 140 ohms
CABLE CONNECTORS
Cabling must have a male XLR connector on one end and a female XLR connector on the other end.
DMX connector configuration
|
| COMMON | |
| 1 | DMX + | |
INPUT | 3 | ||
| |||
| 2 | DMX - | |
|
|
1 | Resistance 120 | ||
3 | ohm 1/4w between | ||
pin 2 | (DMX | ||
2 | |||
pin 3 | (DMX +) of |
| the last fixture. |
1 | OUTPUT |
3 | |
2 | Termination reduces signal errors and |
| to avoid signal transmission problems |
and interference, it is always advisable to connect a DMX signal terminator.
CAUTION | Do not allow contact between the common and the fixture’s chassis ground. Grounding the common |
| can cause a ground loop, and your fixture may perform erratically. Test cables with an ohm meter to |
| verify correct polarity and to make sure the pins are not grounded or shorted to the shield or each other. |
Stage Mover Manual | 8 |