IQ›MX40
Mk.2
User Guide
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User Guide IQ-MX40 Mk.2
l The IQ-MX40 can control four channels of Microbeam, IQ250 or
IQ500 lighting. The number of lanterns on each channel is
unlimited.
l The IQ-MX40 controls the pattern drawn by the lantern, the
speed that it moves, its response to sound and its colour and
gobo.
l The IQ-MX40 also produces a number of colour change
patterns, allowing the colours on the four channels to be
random, synchronised or chased, making a total of 256
different program selections.
l The IQ-MX40 can also control Datamoon, Super Blitzer and
Predator.
Installation.
Connect the IQ-MX40 to the mains supply with the lead provided:
l Brown = Live
l Blue = Neutral
l Green/Yellow = Earth
l The IQ-MX40 must be earthed.
If sound activated operation is required, connect a sound signal, either
0dBm from the line level output of a mixer, or the speaker output from an
amplifier, connect the tip of the jack to the signal, and the sleeve to
amplifier earth, reversal of the connections to the sound input may damage
your amplifier, as it connects the output to earth throught the mains earth
of the IQ-MX40. Great care must be taken not to connect the sound input
into the DMX output as this may destroy the internal electronics (the
DMX-line driver).
Connect the DMX output from the IQ-MX40 to the DMX input of the
nearest lantern. Use a cable recommended for RS-485 data use at
250kbaud, or a good quality screened-twisted-pair cable.
Termination of the DMX-line is performed automatically by the IQ-MX40
and the lantern.
Setting up
The DMX address switches should be set as shown overleaf:
© N.J.D. Electronics 1996 -Page 3-
IQ-MX40 Mk.2 User Guide
Channel DMX Start Switches on
Address (Other switches off)
1 1 None
2 5 4
3 9 8
4 13 8, 4
1 (X reversed) 33 32
2 (X reversed) 37 32, 4
3 (X reversed) 41 32, 8
4 (X reversed) 45 32, 8, 4
1 (Y reversed) 65 64
2 (Y reversed) 69 64, 4
3 (Y reversed) 73 64, 8
4 (Y reversed) 77 64, 8, 4
1 (X & Y reversed) 96 64, 32
2 (X & Y reversed) 101 64, 32, 4
3 (X & Y reversed) 105 64, 32, 8
4 (X & Y reversed) 109 64, 32, 8, 4
DMX.
The DMX system is a high-speed digital data system, which can transmit
all the information required for light dimmers, multi-motor lighting effects
etc. down a single cable. The IQ250 outputs a DMX signal when operating
from its own microphone, which can be used to synchronise other IQ250s.
There is no limit to the number of units that can be connected to the DMX
signal, but it is not recommended that the total cable length should exceed
250m. Each unit connected to the DMX signal is given an address, and it
compares this to the data being sent on the DMX cable, so it can
determine which data is addressed to it. It then uses this data to move a
motor or set a brightness level as required by the controller. As the DMX
system can transmit as much information as 512 analogue control wires
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User Guide IQ-MX40 Mk.2
down a single cable, it has to transmit very quickly, in fact, at a frequency
12 times higher than the highest audio frequency. Anyone who has used
long leads for audio will realies that it is difficult to do without losing the
higher frequencies. To make the DMX system work at such high
frequencies, it requires special circuitry and special cable. Cable can be
designed to pass high frequencies with no loss if it has the correct
resistance connected at each end, this resistance is called the characteristic impedance of the cable. DMX cable has a characteristic impedance of
120W. All NJD DMX products are designed to ensure that the resistors are
connected automatically. Without them, the signal reflects off the end of
the cable and interferes with the new data coming the other way. If the
cable is not correct, the system will not work. Most good quality
low-capacitance screened twisted pair cables will work, but twin individually
screened will not. Also, if the cable is split or joined other than end-to end,
the system will stop working.
Operation.
One of fourteen movement patterns can be selected on the PATTERN
switch. Patterns 1 to 3 are movement chase patterns, patterns 4 to 11 are
shape drawing, and patterns 12 to 14 are individual movement patterns.
Also on the Pattern switch are STATIC which moves all beams to the
central position, and RUN which runs through the fourteen patterns above.
The colour and gobo can be selected on the COLOUR/GOBO switch.
Positions 1 to 8 select the eight colours as follows:
1 Magenta Squares
2 Yellow Tunnel
3 Cyan Dots 4 Pink Star
5 Green Circle
6 Red Circle
7 Blue Circle
8 White Circle
© N.J.D. Electronics 1996 -Page 5-
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