Using The Expansion Bus - Extron electronics DMP 128 User Manual

4. Connect the EXP port of one unit to the EXP port of a second unit
MIC/LINE INPUTS
100-240 ~ 0.6A
using the included shielded (or similar) CAT 6 cable.
MIC
+48V
1 2 3 4
notE: The front panel EXP LED indicates device to device
5 6 7 8
50/60 HZ
connection and configuration status as follows:
•
MIC/LINE INPUTS
100-240 ~ 0.6A
MIC
+48V
1 2 3 4
5 6 7 8
50/60 HZ
•

using the Expansion Bus

After configuration and connection, the two units have 16x16 channels of bi-directional
audio communication.
• The expansion bus from the primary unit (see figure 49, a ) sends audio to Expansion
inputs 1–16 of the secondary unit (see figure 49, b ).
• At the same time, the expansion bus from the secondary unit sends audio to
Expansion inputs 1–16 of the primary unit.
Figure 49.
DMP 128 C AT
1 2 3 4 9 10
5 6 7 8 11 12
(non-AT models)
DMP 128 C
1 2 3 4 9 10
• Off — The unit is not connected to a second
DMP 128.
5 6 7 8 11 12
• On — The unit is connected to another DMP 128 and
configured as the primary unit.
• Blinking — The unit is connected to another
DMP 128 and is currently configured as the secondary
unit.
(AT models)
• Off — Dante device is not responding.
• On — The EXP port is connected to a non-AT
DMP 128 and configured as the primary unit.
• Blinking — The EXP port is not connected.
1A
EXP Bus Connections
DIGITAL I/O
1 2 3 4
O
U
1 2 3 4 5 6 7 8 9 10
T
P
U
11 12 13 14 15 16 17 18 19 20
5 6 7 8 RS-232
T
S
Tx Rx
DIGITAL I/O
1 2 3 4
O
U
1 2 3 4 5 6 7 8 9 10
T
P
U
11 12 13 14 15 16 17 18 19 20
5 6 7 8 RS-232
T
S
Tx Rx
EXP Bus Connection
Primary (1) to Secondary (2)
1
1B
0
1
2A 2B
2
3
4
5
6
DMP 128 • Software Control
1 2 3 4
EXP LAN
RESET
EXP LAN
RESET
2
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