12
AF-1 MkII™ and AF-2™ user manual
DMX cable connection
A reliable DMX data connection requires suitable cable. Standard
microphone cable cannot transmit DMX data reliably over long runs. For
best results, use shielded cable with at least one twisted pair specifically
designed for RS-485 applications. Your Martin dealer can supply suitable
high quality cable in various lengths.
AF-1 MkII™ and AF-2™ both connect to a serial DMX data link using
either their 3-pin or their 5-pin XLR DMX In and Out connectors. DMX
connectors are wired with pin 1 to ground, pin 2 to signal - (cold), and pin
3 to (hot). This is the standard pin assignment for DMX devices.
To connect the DMX data link:
1. Power all devices off.
2. Connect a data cable from the controller’s DMX data output to the first
device’s DMX input
3. Connect the DMX output of this device to the DMX input of the next
device.
4. Continue connecting up to a total of 32 devices in one single line,
output to input.
5. Terminate the link by inserting a male termination plug (available from
your Martin dealer: P/N 91613017) into the data output of the last
device. A termination plug is simply an XLR connector with a 120
Ohm, 0.25 W resistor soldered across pins 2 and 3.
Specifying DMX control channels
AF-1 MkII™ and AF-2™ use a single DMX control channel to receive
instructions from the controller. This control channel is the DMX address.
To control machines individually, each must have its own unique DMX
address. To control identical machines as a group, they can all be given
the same DMX address. They will then receive the same instructions and
should behave identically. Setting up identical fixtures with the same DMX
address can also be a good tool for troubleshooting unexpected behavior.
The DMX address on AF-1 MkII™ and AF-2™ fans can be set to any
channel from 1 to 511 using DIP-switch pins 1 - 9. To set the DMX
address:
1. Decide on an available DMX address for each machine.
2. Look up the DIP-switch settings using the Martin Address Calculator at
http://www.martin.dk/service/utilities/AddrCalc/index.asp, or look for
the address in the DIP-switch settings table on page 13. For example,
Summary of Contents for AF-1 MkII
Page 1: ...USER MANUAL ...
Page 29: ......
Page 30: ......
Page 31: ......
Page 32: ...www martin com Olof Palmes Allé 18 8200 Aarhus N Denmark Tel 45 8740 0000 Fax 45 8740 0010 ...