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Summary of Contents for Nexo Digital Patching Unit
- Page 1 DPU “ “ “ “ Digital Digital Digital Digital Patching Unit Patching Unit Patching Unit Patching Unit” ” ” ” QUICK START v1.2...
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Page 2: Fcc Information (U.s.a.)
FCC requirements. Modifications not expressly approved by interference, which can be determined by turning the unit “OFF” and “ON”, NEXO-SA may void your authority, granted by the FCC, to use the product. please try to eliminate the problem by using one of the following measures: 2. - Page 3 NEXO-SA service • Do not open the device or attempt to disassemble the internal parts or modify personnel.
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Page 4: Important Notice For The United Kingdom
• Always turn the power off when the device is not in use. • The performance of components with moving contacts, such as relays and connectors, deteriorates over time. Consult qualified NEXO-SA service personnel about replacing defective components. -
Page 5: Quick Start
4 and speakON 8 connectors. However please devote some attention to reading the user manual. A better understanding of specific features of the DPU digital patching unit will help you to operate your system to its full potential. Front panel description ®... -
Page 6: Basic Functions
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. Be sure that the host NXAMP and the DPU are both disconnected from mains. 1 1 1 1 ®... - Page 7 Power Output GPIO cables are not delivered by NEXO. If you wish to set up a redundant power amplifier system, you can make your own GPIO cable using standard DB25 MAL PLUG KIT. Please follow the instructions below for signals and power cabling.
- Page 8 GPIO mode 6 for backup NXAMPs Mode 6 is used for redundancy in fix or live installations using NXAMP and DPU. The GPIO mode 6 is dedicated for backup amplifiers. Use NXAMP menu: 5.GPIO Mode=> Edit => GPIO ... Pin Name In/Out On each Impulse (From 1 to 0) GPInput 1...
- Page 9 GPIO mode 7 for Normal NXAMPs Mode 7 is used for power amplifier redundancy in fix or live installations using NXAMP and DPU. The GPIO mode 7 is dedicated for normal amplifiers. Use the NXAMP menu: 5.GPIO Mode=> Edit => GPIO … Pin Name In/Out Meaning when set to 0...
- Page 10 How do I cable NXAMPs and DPU using GPIO MODE 6&7? First you have to define the ratio of normal and backup amplifier, for example 1:5, meaning you have one backup amplifier for five normal amplifiers. Connect the GPOutput1 of each normal amplifier to the corresponding Backup NXAMP GPInput from 1 to 5. Connect all the GPInput1 of each normal amplifier to the GPOutput1 of the backup amplifier.
- Page 11 GPIO NXAMP pins description and cabling in a redundant system Find the NXAMP GPIO port pins description below. Special cabling of the GPIOs port is needed to run redundant GPIO mode 6 & 7 properly. The maxim ratio when using the redundant GPIO mode 6 and 7 is 1:5, means one backup amplifier for 5 normal amplifiers.
- Page 12 Audio Input Signal cabling in a redundant system Regarding audio input signals, NXAMP has four analog and four digital inputs, that can be patch independently on each of the four power outputs. The patch will also be saved within the scene parameters in the backup amplifier and recall when needed. Note: You can use a maximum of four different audio signals per backup amplifier.
- Page 13 Power cabling between NXAMP and DPU in a redundant system Use 4 poles Speakons cables and 8 poles Speakons cables if you use more than 1:1 ratio (backup : normal). Reproduce the same cabling pattern if you use more than three normal amplifiers. Back side of the rack Front side of the rack To Speakers...
- Page 14 Serial ports cabling between DPU and NXAMP in a redundant system DB9 null modem or cross cables are used to connect the DPU to their host NXAMP using RS232 connectors. The serial link is use to pilot the DPU when needed. Back side of the rack Front side of the rack...
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Page 15: Ordering References
Optional NXAMP DANTE card Optional NXAMP DANTE card NX.DT104 NX.DT104 Optional NXAMP DANTE card Optional NXAMP DANTE card NX.DPU NX.DPU Digital Patching Unit ‘DPU’ Digital Patching Unit ‘DPU’ NX.DPU NX.DPU Digital Patching Unit ‘DPU’ Digital Patching Unit ‘DPU’ NXAMP4X1U NXAMP4X1U... - Page 16 Redundancy using DPU without NXAMP A specific firmware has been developed for the DPU to be use with any amplifiers that possess a GPIO port. Uploading this new firmware into the DPU through the internal JTAG plug will convert the DPU’s RS232 serial port to a GPIO port. To load the firmware use a SILICON LABORATORIES ADAPTATEUR USB DEBUG for C8051FXX: DEBUGADPTR1-USB.
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