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16
RUSH MH 4 Beam User Manual
Note that if a fixture loses its DMX signal it will maintain its current effect until
powered off or reset.
Tips for reliable data transmission
Use shielded twisted-pair cable designed for RS-485 devices: standard
microphone cable cannot transmit control data reliably over long runs. 24
AWG cable is suitable for runs up to 300 meters (1000 ft.). Heavier gauge
cable and/or an amplifier is recommended for longer runs. The pin-out on all
connectors is pin 1 = shield, pin 2 = cold (-), and pin 3 = hot (+). Pins 4 and 5
in the 5-pin XLR connectors are not used in the fixture but are available for
possible additional data signals as required by the DMX512-A standard.
Standard pin-out is pin 4 = data 2 cold (-) and pin 5 = data 2 hot (+).
To split the link into branches, use a splitter such as the Martin DMX 5.3
Splitter™ or Martin RDM 5.5 Splitter™. Terminate the link by installing a
termination plug in the output socket of the last fixture. The termination plug,
which is a male XLR plug with a 120 Ohm, 0.25-Watt resistor soldered
between pins 2 and 3, “soaks up” the control signal so it does not reflect and
cause interference. If a splitter is used, terminate each branch of the link.
Connecting the data link
To connect the fixture to data:
1. Connect the DMX data output from the controller to the first fixture’s male
XLR DMX input connector.
2. Connect the first fixture’s DMX output to the DMX input of the next fixture
and continue connecting fixtures output to input. Terminate the last fixture
on the link with a DMX termination plug.
Fixture setup
This section explains the options available to change the fixture’s settings.
Settings are made using the menus available in the control panel and are
retained when the fixture is powered off.
A complete map of the control menu structure and brief explanations of their
purposes can be found in ‘Control menus’ on page 38.
Using the control panel
•
To access the control menus in the control panel, press the MENU button.
•
Navigate the menu structure using the ENTER, DOWN and UP buttons.
•
Scroll between menu items using the DOWN and UP buttons.