Martin MAC 250 ENTOUR Manual de usuario descargar pdf (Pagina 10)

10 MAC 250 Krypton/Entour

5 Install a safety cable that can bear at least 10 times the weight of the fixture securely to the structure and

anchor the cable to the dedicated attachment point on the base. The attachment point is designed to fit a

carabiner clamp.

6 Verify that there are no combustible materials or surfaces to be illuminated within 1 meter (39 inches) of the

fixture, and that there are no flammable materials nearby.

Connecting the serial data link

The MAC 250 Krypton/Entour has locking 3-pin and 5-pin data input and output sockets that are

wired for use with DMX devices with pin 1 to shield, pin 2 to cold (-) and pin 3 to hot (+).

Important! Never connect more than 1 data input and 1 data output.

1 Connect the controller’s output to the fixture’s data input.

2 Connect the output of the fixture closest to the controller to the input of the next fixture. If connecting a

fixture with pin 3 hot to a fixture with pin 3 cold, use a phase-reversing adaptor.

3 To terminate the link, insert a male 120 Ω XLR termination plug in the output of the last fixture.

TIPS FOR BUILDING A SERIAL LINK

• Use shielded twisted-pair cable designed for RS-485 devices: standard microphone cable cannot transmit

DMX data reliably over long runs. For links up to 300 meters (1000 ft.) long, you can use 24 AWG, low

capacitance, 85-150 ohm characteristic impedance, shielded cable with 1 or more twisted pairs. For runs up

to 500 meters (1640 ft.) use 22 AWG cable. Use an amplifier if the serial link exceeds 500 meters.

• Never use a “Y” connector to split the link. To split the serial link into branches use a splitter such as the

Martin 4-Channel Opto-Isolated RS-485 Splitter/Amplifier.

• Do not overload the link. Up to 32 devices may be connected on a serial link.

• Terminate the link by installing a termination plug in the output socket of the last fixture on the link. The

termination plug, which is simply a male XLR connector with a 120 ohm, 0.25 watt resistor soldered

between pins 2 and 3, “soaks up” the control signal so it does not reflect back down the link and cause

interference. If a splitter is used, terminate each branch of the link.

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Martin MAC 250 ENTOUR Manual de usuario Pagina 10