27
Giotto profile rel.1.0
Channel
GB
4.7 Framming shutter rotation -ch 11, ch13, ch15, ch17-
4.8 Remote lamp striking and reset -ch 18-
The ignition (or dousing) of the lamp can be controlled via DMX using a lighting console. In fact, after having switched on the
Giotto, the lamp remains off until it receives a "lamp strike" command. This function has no effect if it's not enabled by means of
the fixture's built-in microcomputer. In this case, the lamp will ignite automatically without waiting to receive the command from the
lighting console. Should the lamp be accidentally switched off, it's advisable to wait at least 5 minutes before sending the ignition
command. However, if the command is sent sooner, Giotto Profile will ignite the lamp by running restrike attempts at regular 3-
minute intervals.
Lastly, Giotto Profile has a function which automatically reduces lamp power by 50% every time the shutter or dimmer is closed.
This function ensures considerably better fixture cooling and increases lamp life. The lamp obviously returns to full power when
the shutter or dimmer are reopened.
Should any problems occur, a reset command can be sent to the fixture in order that all the motors return to their starting
positions before continuing to execute commands received from the console.
4.9 Mspeed –ch 19-
Mspeed affects PAN and TILT and is intended as the time required to complete a movement from one position to another. This
means that the fixtures with the same Mspeed value will reach destination at the same instant. It's therefore possible to set
movement times for each fixture which are independent of the times sent by the lighting console. The DMX values between 000-
003 allow the console to control the movement, whereas with DMX value 004 a time can be allocated to the movement. To find
Mspeed times, refer to the conversion table.
4.10 Electronic focus -ch 20-
This channel is used for precise linear focussing, ensuring well-defined projections at any distance, or eye-catching blurred
effects. IMPORTANT!! For correct electronic focus operation, fit the dichroic gobos with their coated side outwards.
DMX
VALUE
FUNCTION
0 – 255
0 - 100% LINEAR REGULATION
DMX
VALUE
FUNCTION
0 - 3
CONTROLLER CROSS FADE
4… 255
SLOWEST … FASTEST
DMX
Level range 0 - 255
FUNCTION
0 – 60
off
61 – 129
Hysteresis
130 - 179
on
LAMP
180 – 239
Hysteresis
240 – 255
Reset
RESET
DMX
VALUE
FUNCTION
0
NO ROTATION
0 – 255
LINEAR REGULATION
255
MAX ROTATION ANGLE
