Velleman VMA432, Руководство пользователя

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VMA432
V. 01 – 16/04/2018 3 ©Velleman nv
5. Overview
VMA432
This Arduino ® add allows you to use the Arduino ® as a DMX master device (transmitter). This board is a
simple circuit based around a driver chip (MAX-485 or SN 75176). With 3-pin male XLR DMX output
connector. Pin1 = Signal Common, Pin2 = Data-, Pin3 = Data+. The board converts the Arduino
® signal
voltage according to DMX (RS485). Impedance is 100 Ω.
working voltage ................................................................................................................ 5 V
DMX connection ....................................................................................................... 3-pin XLR
dimensions .................................................................................................... 40 x 20 x 30 mm
weight ............................................................................................................................ 10 g
6. Pin Layout and Connection
7. DMX512 Timing Chart
description min type max unit
break 88 88 1000000
µsec
MAB 8
frame width 44
start/data/stop bits 4
MTBF NS 1000000
MTBP NS 1000000
frame width
start code
frame width
channel 1
1 MTBP idle 6 MTBF
2 break 7 start bit
3 MAB 8 8 data bits
4 start bit 9 stop bits
5 stop bits 10 other channels