Using the expansion bus, Figure 49. exp bus connections, Exp bus connection primary (1) to secondary (2) – Extron Electronics DMP 128 User Guide User Manual
Page 86: 1a 1b 2a 2b
4.
Connect the EXP port of one unit to the EXP port of a second unit
using the included shielded (or similar) CAT 6 cable.
notE: The front panel EXP LED indicates device to device
connection and configuration status as follows:
•
(non-AT models)
•
Off — The unit is not connected to a second
DMP 128.
•
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.
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.
0
1
2
3
4
5
6
EXP Bus Connection
Primary (1) to Secondary (2)
1
2
1A
1B
2A
2B
Figure 49.
EXP Bus Connections
100-240 ~ 0.6A
RESET
LAN
3
7
2
6
1
5
MIC/LINE INPUTS
Tx Rx
RS-232
DIGITAL I/O
1 2 3 4 5
MIC
+48V
1
3
2
DMP 128 C
EXP
50/60 HZ
4
8
4
5
7
6
8
9
10
11
12
6 7 8
9 10
11 12 13 14 15
16 17 18 19 20
O
U
T
P
U
T
S
2
1
3
4
6
5
7
8
100-240 ~ 0.6A
RESET
LAN
3
7
2
6
1
5
MIC/LINE INPUTS
Tx Rx
RS-232
DIGITAL I/O
1 2 3 4 5
MIC
+48V
1
3
2
DMP 128 C AT
EXP
50/60 HZ
4
8
4
5
7
6
8
9
10
11
12
6 7 8
9 10
11 12 13 14 15
16 17 18 19 20
O
U
T
P
U
T
S
2
1
3
4
6
5
7
8
3
4
1
2
DMP 128 • Software Control
80