Pathway #8863, 8865, 8867, 8869, 8863/5 - Manual

Printed in Canada
[email protected]
www.pathwayconnect.com
GRAY
Pathway Connectivity, 480C - 36 Avenue S.E.,
Calgary, AB, T2G 1W4 Canada
tel (403) 243-8110 fax (403) 287-1281
DMXRepeater User Guide
To ensure trouble free operation, DMX512
standards require that DMX devices be installed in
a daisy chain, with no tees, wyes or stars in the
DMX wiring. However, site conditions may make
star wiring desirable or even mandatory. A Gray
Interfaces DMXRepeater permits star wiring by
making each branch of the star appear electrically
as its own entity, unaffected by the other branches
of the star. Additionally, opto-isolation circuitry
isolates each branch to prevent ground loops or
accidental damage from fault voltages on DMX
lines.
Operational Philosophy
Connections
Typically, Gray Interfaces DMXRepeaters are used
in the following configuration:
•
DMX Input is connected to the control
console DMX output
•
DMX Outputs (A,B,C,D,E, & F) are
connected to the remote DMX devices or
receptacles for the equipment receiving the
console signal. These may be dimmers,
scrollers or moving lights, for example.
•
DMX Thru passes the console signal to
additional DMXRepeaters or other similar
devices, and would in turn be connected to
DMX Input on the next unit in line. If
talkback is used, you must connect any
downstream equipment to an output
connector.
Indicators
LED indicators are provided on the face of the
DMXRepeater for diagnostic purposes. Each
group of three Output LEDs corresponds to one of
the DMX outputs from A to F. The single group to
the left of the termination switch corresponds to the
DMX input from the console.
Red LEDs are provided for the main (Input) +5 volt
power supply and the six isolated supplies (Iso
+5V), green LEDs are provided for Transmit data
and amber LEDs are provided for Received or
Talkback data, if used.
In conventional operation, the following should be
observed:
•
All red LEDs should be illuminated
whenever the unit is powered.
•
The amber Input Receive LED and six
green Output Transmit LEDs should
illuminate once a functioning console is
connected to DMX Input.
In addition, the following will be observed if devices
using DMX Talkback are used:
•
The amber Talkback LED will illuminate at
the output section (A to F) with the
functioning Talkback device connected.
•
The green Talkback LED should illuminate
at the input section.