Bricasti Design M10 Remote Control - Manual (Page 7)

Installing the M10
Cables and Wiring
The M10 is supplied with its own 10m serial cable and termination plug for the setup of one M7 to the M10
remote. There are two situations where you may need to make your own cables:
• If more that one M7 is connected to the M10 you will need a short version of the serial cable to
interconnect the units. You can order an accessory short serial interconnect cable our part # M10-
SC2 from Bricasti, or fabricate your own, to your desired length, to our below spec.
• If a custom length main serial cable is needed from the M10 to the M7 you must make your own
cable as we do not supply custom length cables. When doing so you must wire the connections to
this specification or you may have errors in the transmission of the data, especially over longer
cable runs.
Cable type:
We use Reference Laboratories RS FTP02 SF cable for our supplied standard 10m cable. We
choose this cable for its high flexibility, and suitability for RS422 applications. There a many
cables in the market that will do the job so you should choose one that is specified for RS422
applications.
For more information about their cable contact: www.referencelaboratory.com
Wiring:
It is not recommended to use an off the shelf prepared serial cable. The M10 to M7 connection,
and interconnecting M7s, is specific in how it uses the wires in the cable. Although the serial data
and interface used for the M10 is to an RS422 standard, the pin out is not, so data error can occur
if the cable is not wired correctly and a generic cable is used. We use a twisted pair for data
transmit, twisted pair for data receive, and the others lines are used for 12v DC power and ground.
Wiring of the cable is one to one, female connector to the M10, and Male connector to the M7.
Pin outs on the M10 are:
• Pins 2 and 7: RX + (2) and RX- (7) from the M7 on a twisted pair in the cable.
• Pins 4 and 8: TX+ (4) and TX-(8) to the M7 on a twisted pair in the cable.
• Pins 6 and 9 Power
• Pins 1 and 5 Ground
• Pin 3
Shield
This wiring is the same for making a short M7 to M7 loop thru cable when connecting more than
one M7 to the M10.
Connectors:
There are many DB9 connectors that are suitable for the application, some are crimp type and
others are solder lug type, with hand screws, plastic or metal housings etc. Since there are so
many types that are suitable we only recommend one of a high quality and with gold pins:
1 x Male DB9 connector with gold pins
1x Female DB9 connector with gold pins
Cable Length:
As mentioned before, the distance between the M10 and the first M7 has a limit of 30 meters
unless external power is supplied to the M10.
• 30 meters with power from the M7
• 300 meters with external power added for the M10 ( within 10 meter of the M10 on the
cable run )
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