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Operation
DANGER! Read "Safety Information" on page 3 before installing, powering, operating or
servicing the MAC TW1.
Important! Leave the MAC TW1 powered on for 20 minutes after switching off the lamp so
that cooling fans can reduce the temperature of the fixture. Failure to do so will result in
excessive heat buildup and may cause damage that is not covered by the product
warranty.
This section describes the functions that can be controlled via DMX. See "MAC TW1 DMX protocol" on
page 28 for an overview of channels and commands.
The MAC TW1 has two DMX operating modes, 16-bit basic and 16-bit extended. The extended mode
requires six more DMX channels than the basic mode and provides all features of the basic mode plus fine
control of electronic and mechanical dimmers, cyan, magenta, yellow and zoom.
Where fine control is available, the main control channel sets the first 8 bits (the most significant byte or
MSB), and the fine channels set the second 8 bits (the least significant byte or LSB) of the 16-bit control
byte. In other words, the fine channel works within the position set by the coarse channel.
Fixture reset
If an effect loses its indexing and fails to move to programmed positions, the fixture can be reset from the
controller by sending the "Reset" command on channel 1.
If DMX reset is disabled in the control menu (
executed if the main CMY channels (4, 5 and 6 in basic mode or 6, 8 and 10 in extended mode) are set to a
value from 230 to 232. If
before it is executed.
Electronic dimming
The internal electronic dimming system is controlled on channel 2, with fine control available in extended
mode on channel 3.
If the Lamp Power switch on the connections panel is set to External, the internal electronic dimming
channels (2 in basic mode or 2 and 3 in extended mode) are disabled. The external dimmer's control
channel must be set up on the DMX controller following the dimmer manufacturer's instructions.
Mechanical dimming
The mechanical dimmer/shutter system provides 100 percent dimming, instant open and blackout, and
variable speed regular and random strobe effects.
Fine control of the mechanical dimmer is available in extended mode on channel 5.
Cyan, Magenta and Yellow
Cyan, magenta and yellow can be added on channels 4, 5 and 6 in basic mode or 6, 8 and 10 in extended
mode. Fine control of CMY is available on channels 7, 9 and 11 in extended mode.
Zoom
The zoom lens varies the one-tenth peak angle from 19° to 41° (precise angle limits depend on lamp type)
using channel 7 in basic mode or 12 in extended mode. Fine control of zoom is available in extended mode
on channel 13.
→
is set to
Operation
→
→
), the reset command can only be
, the reset command must be sent for 5 seconds
21
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