Martin MAC 250 Krypton, User Manual

Page: 9 / 54

Setup 9
The MAC 250 Krypton/Entour includes an omega clamp mounting bracket to which 1 or 2 rigging clamps
(not included) can be bolted. The clamp mounting bracket fastens to the base as shown with 1/4-turn
fasteners.
Warning! Attach an approved safety cable to the attachment point provided in the base. Never use
the carrying handles for secondary attachment. Always use an approved safety cable.
The 1/4-turn fasteners are locked only when turned fully clockwise.
1. Verify that the clamps are in good condition and can bear at least 10 times the weight of the fixture. Bolt
clamps to the bracket with a grade 8.8 (minimum) M12 bolt and lock nut, or as recommended by the
clamp manufacturer, through the 13 mm holes in the clamp mounting bracket.
2. Align the clamp mounting bracket with any 2 key slots on the base. Insert both locking pins into the slots
and turn both levers a full 1/4 turn clockwise to lock.
3. Verify that the structure can bear at least 10 times the weight of all installed fixtures, clamps, cables,
auxiliary equipment, etc.
4. Working from a stable platform, clamp the fixture to the structure.
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.
Figure 2: Clamp mounting bracket