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AtmosFEAR® 221b Manual - Rev. B
(c) 2019 Blizzard Lighting, LLC
Fuse Replacement
AtmosFEAR® 221b is equipped with an easy-to-use, push-button thermal cir-
cuit breaker. The button will extend for visual trip indication, and can simply be
pushed back in to be reset.
Connecting A Bunch of AtmosFEAR® 221b Units
You can use a serial data link to run shows using a DMX-512 controller or to
run shows on two or more units set to sync in master/slave operating mode.
The combined number of channels required by all the units on a serial data link
determines the number of units the data link can support.
Units on a serial data link must be daisy chained in one single line. Also, con-
necting more than 32 units on one serial data link without the use of a DMX
optically-isolated splitter may result in deterioration of the digital DMX signal.
The maximum recommended cable-run distance is 500 meters (1640 ft). The
maximum recommended number of units on a serial data link is 32 fixtures.
Data/DMX Cabling
You should use data-grade cables that can carry a high quality signal and are
less prone to electromagnetic interference. For instance, Belden© 9841 meets
the specifications for EIA RS-485 applications. Standard microphone cables will
“probably” be OK, but note that they cannot transmit DMX data as reliably over
long distances.
3-Pin??? 5-Pin??? Huh?!?
This unit is ideal for use with any DMX controller. It comes equipped with both
3-pin and 5-pin XLR in/out sockets with standard pin configuration:
Conductor
3-Pin Female (Output) 5-Pin Male (Input)
Ground/Shield
Pin 1
Pin 1
Data 1- (Primary Data Link)
Pin 2
Pin 2
Data 1+ (Primary Data Link)
Pin 3
Pin 3
Data 2- (Optional Secondary Data Link)
Pin 4
Pin 4
Data 2+ (Optional Secondary Data Link)
Pin 5
Pin 5
This fog machine comes equipped with a 20A, push-to-
reset thermal circuit breaker.
3. SETUP
