Leaf LT2020E manual
Page 9
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When a manual RCA audio output routing command is sent it will override this
automatic function for that output. When this output is switched off using a manual
audio command, automatic mode will be re-activated for that output.
Selectable audio sync delay is also available independently on these audio output ports
(ref: Audio Sync Delay).
3.5 3.5mm
– (1/8 inch) IR ports
The 3.5mm (1/8 inch) Remote IR connectors are used for routing external IR control
signals in one direction between the LT2020E and the connected LTB1E breakouts.
These connections are treated as through connections. That is, IR port 1 connects to
the breakout connected to Zone 1, through to port 16 being connected to the breakout
at Zone 16.
The IR ports support direct connection and drive of Leaf “hammerhead” and other
compatible 5 volt, 3 wire (Tip Ring Sleeve / stereo plug) IR detectors to Leaf LB41 and
other compatible 2 wire (mono plug) IR blasters.
The system wide operating direction of the IR detectors and blasters (either Hub to
Zones or Zones to Hub) is configurable by DIP Switch 1.
If the IR Direction is set to “Hub to Zones” by DIP switch 1 (ON/ down), the IR ports on
the LT2020E can be further configured by DIP Switch 2 to accept direct IR drive from
an external control system or similar instead of stand-alone IR detectors.
(See table 1 for DIP switch configuration details.)
For this configuration, the IR leads from the control system to the Leaf LT2020E need
to be 3.5mm (1/8 inch) Stereo (Tip Ring Sleeve) leads or Mono (Tip Sleeve) leads
fitted with suitable adaptors at the Leaf LT2020E end. For IR connection from Control4,
standard stereo leads may be used. Other control systems may require the
“Ring”
connection of these leads at the LT2020E end to be left “floating”, “not connected”, or
connected to “Tip”. This can also be achieved by the use of suitable adaptors.
Suitable adaptors for either purpose
would be a “mono 3.5mm (1/8inch) jack (socket)
to stereo 3.5mm (1/8inch) plug adaptors”, connected at the Leaf LT2020E end of each
IR lead from the control system. Adaptors which appear to be suitable include: Radio
Shack 274-374, and Altronics P0340.
If the IR input type is set to IR RX detector (DIP Switch 2 OFF/up):
then the IR output will be automatically modulated at 38Khz.
If the IR input type is set to IR direct drive (DIP switch 1:ON/down & DIP switch 2
ON/down):
then the received IR input will be directly passed through to the IR output.
Any external IR drive voltage should not exceed 5V.
Summary of Contents for LT2020E
Page 1: ...LT2020E...
