Nexo NXAMP4x1mk2, User Manual

Page: 49 / 70

DPU DIGITAL PATCHING UNIT FOR NXAMP
NXAMPMK2 USER MANUAL PAGE 49 / 70
WARNING!
Use 4 x 4 mm2 (AWG11) cable and four poles speakON to connect NXAMPmk2 power outputs to DPU
inputs (2 meters / 16 feet max).
WARNING!
This mark indicates a dangerous electrically live terminal.
When connecting an external wire to this terminal, it is necessary either to have “a person who have
received appropriate guidance on handling” make the connection or to use leads or a cord that have
been manufactured in such way that the connection can be made simply and without problem.
E: RS232 PORT
Connect this serial port to NXAMPmk2 RS232 port using a shielded crossover (null-modem) cable only (2
meters / 16 feet max) with female db9 connectors on each side. Below is the cable to be used to connect
NXAMPmk2 to DPU pinout.
NXAMP serial port pins DPU serial port pins
2 (RXD)

NXAMP Receive

3 (TXD)
3 (TXD)
→
NXAMP Transmit
→
2 (RXD)
5 (GND) Signal ground 5 (GND)
Other Unused Other
NB: A cable kit for DPU containing
•
2 x 4 poles 4 x 4mm² speakON cable
•
1 x db9 crossover (null-modem) cable
•
2 x IEC mains cable with lockable connector (available with EU or US plugs)
can be purchased from NEXO separately.
OPERATING THE DPU
Using the DPU is straightforward, as there is nothing to set up. The only requirement is that the NXAMPmk2
firmware supports the DPU, otherwise it will stay in Stand-by mode with nothing patched on its front panel
connectors.
WARNING!
NXAMPmk2 firmware should be at least LOAD3_11 for the DPU to work. If not, the DPU will stay in stand-
by with nothing routed on its outputs
CONNECTIONS AND START UP
Be sure that the host NXAMPmk2 and the DPU are both disconnected from mains.