Lectrosonics SPN32i - Manual (Page 10)

ASPEN Input Only Processors
LECTROSONICS, INC. 10
Cabling Of Stacked Units
In a stacked configuration, ASPEN processors must
be interconnected as shown here. Each Slave unit in
a stack gathers data and audio signals from the unit
below it, adds its own signals and passes the total on to
the unit above it. At the top of the stack, the Master unit
gathers all signals from below, adds its own and then
sends the total back down the bus to all Slave units
below it. In this manner, all Slave units have access to
all inputs on any unit in the stack.
Each circuit board has an upper and a lower CAT-5 con-
nector. Since there are two circuit boards in a 2RU unit
such as the SPN1624, the circuit boards are connected
in the same manner as if they were in separate chas-
sis. The ASPEN bus is bidirectional, handling data and
audio signal forward and back propagation through a
single cable connection.
1RU SPN
Conference
configured as
Master
2RU SPN1624
configured as
intermediate
Slave
1RU SPN16i
configured
as lowermost
Slave
ASPEN PORT
The processors automatically configure themselves for
Master and Slave status as determined by the cabling.
If a unit is connected to another unit above it through
the upper connector, it is automatically configured as
a Slave. If there is no unit above it, then it becomes a
Master.
ASPEN RS-232 Port
Here is the wiring diagram for the ASPEN RS-232 Port
for connecting to a PC.
1
2
3
4
5
6
7
8
9 1
2
3
4
5
6
7
8
9 DCD
RX
TX
DTR
GND
DSR
RTS
CTS
RI
TX
RX
GND
Host
Serial
Port
(PC)
ASPEN
RS-232
Port
Wiring Diagram
ASPEN Device to PC
DTE pin
functions
Female
connector
Male
connector
DCE pin
functions
Female
jack
Male jack