Leaf LT88 / LT88E manual
Page 10 Of 22
3.7 4 pin DIN power connector
The LT88/E requires 4 Pin 12V power.
WARNING. Failure to use the correct power supply as provided by Leaf Audio
may result in incorrect operation and / or damage to the Leaf True Matrix system.
The power supply is fitted with a locking connector. Be sure to slide back the
locking sleeve on the plug before attempting to connect or disconnect it at the
LT88/E. The correct connector orientation for these models is
“Flat Side down”.
3.8 RS232 Serial Control connectors
The unit can be controlled by serial commands through the RS232 input port. Typically
this would be connected to a control system with a straight through DB9 Male to
Female RS232 lead. Some control systems may require only the TxD, RxD and Gnd
wires of an RS232 lead to be connected. The pin configurations of these 3 connections
on the DB9 plug is: TxD = Pin 2, RxD = Pin3, Gnd = Pin5.
3.8.1 Single LT88/E use
The RS232 Input port is used for controlling the unit.
The TERM (Termination) switch (ref: para 3.10) must be set to ON (Up).
3.8.2 Multiple LT88/E use
Multiple units can be chained together and addressed on the same RS232 link
by connecting the RS232 thru (out) port on one unit to the RS232 input port of
the next unit.
The last unit in the chain must have the TERM (Termination) switch (ref:para 3.10)
set to ON (Up), while all other units in the chain must have this switch set to OFF
(Down). The RS232 Input port is used for controlling the units.
Spring loaded
locking sleeve
Slide back to
release
Flat side
