
7
DATA CONNECTION
A reliable data connection begins with the right cable.
Microphone cable cannot transmit data reliably over
long distances or for long periods. For best results, use
only cable designed for RS-485 applications. One
cable for connecting the first fixture is included; you
will need additional cables to connect additional
fixtures. Your Martin dealer can supply suitable cable
in various lengths.
The MC-Showtime controller data output, which is
wired pin 1 to ground, pin 2 to signal - (cold), and pin 3
to signal + (hot), is configured for direct connection to
all MC-Showtime compatible Martin fixtures (see
“Supported fixtures” on page 11).
Connecting the data link
1 Connect a data cable to the MC-Showtime controller
data output. Lead the cable to the first fixture and plug it
into the data input.
2 Connect the data output of the first fixture to the data
input of the next fixture. Continue connecting fixtures
output to input.
3 Terminate the link by inserting the male termination plug,
included, into the data output of the last fixture. A
termination plug is an XLR connector with a 120 ohm
resistor soldered across pins 2 and 3.
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