Leaf LT88 / LT88E manual
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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 IR ports
The 3.5mm Remote IR connectors are used for routing external IR control signals in
one direction between the LT88 / LT88E and the connected LTB1 / 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 8 being connected to the breakout at
Zone 8.
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, the IR ports on the LT88 /
LT88E 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.
For this configuration, Stereo (Tip Ring Sleeve) 3.5mm leads must be used instead of
Mono leads for the IR interconnections from the control system to the Leaf
LT88
/LTMI88E. The “Ring” connection of these leads at the LT88/LTMI88E end (or
both ends) must be left “floating” / not connected.
(See table 2 for DIP switch configuration details.)
If the IR input type is set to IR RX detector (DIP Switch 2 OFF/down):
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/up & DIP switch 2 ON/up):
then the received IR input will be directly passed through to the IR output.
Any external IR drive voltage should not exceed 5V.
3.6 RJ45 type
“RS232 through” ports
The LEAF True system provides a bi-directional, full duplex
“RS232 through” capability
between the LT88/LT88E and each of the connected LTB1/LTB1E Breakouts through
specific RJ45 connectors. These are for optional use by external RS232 equipment.
Connection from these ports to RS232 equipment would typically be achieved through
the use of RJ45 to DB9 RS232 adaptor leads. Leaf Audio has suitable RJ45 to RS232
(DB9) Female adaptor leads (LT45DB9Female)available for sale. Male DB9 RS232
connection may require the additional of M-M gender bender(s).
For convenience the pinouts of the RJ45 type “RS232 through” ports is shown below.
RJ45
type “RS232 Through” port(s)
receptacle (Front view)
At LT88 /LT88E E
At LTB1 / LTB1E (Breakouts)
