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RME Audio M-1620 Pro D User Manual
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RME Audio M-1620 Pro D User Manual

RME Audio M-1620 Pro D User Manual

16-channel a/d, 20-channel d/a converter with dante, madi and adat
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High-end Converter
M-1620 Pro D
16-Channel A/D, 20-Channel D/A Converter
DANTE | MADI
with Dante®, MADI and ADAT®
User's Guide

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Summary of Contents for RME Audio M-1620 Pro D

  • Page 1 High-end Converter M-1620 Pro D 16-Channel A/D, 20-Channel D/A Converter DANTE | MADI with Dante®, MADI and ADAT® User’s Guide...
  • Page 2 RME M-1620 Pro D User’s Guide...
  • Page 3 Table of Contents 1. Safety Precautions ...............  ...
  • Page 4 8.3. Device Lock ............... .  ...
  • Page 5 11.3.3. Effects of Sample Rate Changes on Existing Routing ....... .  ...
  • Page 6 RME M-1620 Pro D User’s Guide  WARNING DO NOT OPEN DEVICE - RISK OF ELECTRIC SHOCK The unit has non-isolated live parts inside. No user serviceable parts inside. Refer service to qualified service personnel.  CAUTION General Safety Information Read read the following safety information thoroughly and keep it in a safe place for later reference.
  • Page 7 Each analog channel can be individually adjusted to three different sensitivities that are perfectly matched to the converter’s range. While this is usually implemented with digital 'trims', the M-1620 Pro D does the adjustment in the analog domain, ensuring that the converter’s signal to noise ratio is not reduced when adapting to common line levels.
  • Page 8 The unit retains all settings, including presets, when the firmware is upgraded. 2.2. Use of the Display and Encoder The M-1620 Pro D can be controlled directly at the unit. For this purpose, a display and an encoder provide access to all features.
  • Page 9 RME M-1620 Pro D User’s Guide 2.3. Status Indicator Color Chart Notifications on this device have been optimized for different screen sizes. They are unified across the device display and the web remote and include a color bar that indicates the current state at a glance.
  • Page 10 RME M-1620 Pro D User’s Guide 3. Hardware Section 3.4, “Standby Switch” Section 3.6, “Headphone Outputs” Section 3.9, “Control Section” Section 3.19, “Word Clock” Section 3.17, “ADAT Inputs and Outputs” Section 3.16, “MADI Coaxial and SFP” Section 3.13, “Analog Line Output Connectors”...
  • Page 11 3.3. Power On The M-1620 Pro D has a power off switch at the rear and a standby switch at the front. Perform the following steps to power on the M-1620 Pro D: 1. Ensure either or both power inlets are properly connected to a power source.
  • Page 12 RME M-1620 Pro D User’s Guide 3.4. Standby Switch The standby switch is used to power off the device when it is not in use. While in standby mode, the device is completely powered down except for a red ring illumination. No signals are processed or passed on.
  • Page 13 RME M-1620 Pro D User’s Guide 3.6. Headphone Outputs The M-1620 Pro D features two headphone outputs, 1/4" (6.3mm) TRS, on the front panel. They can also function as a dual mono unbalanced outputs with individual routing and gain control and as a mono balanced line level outputs.
  • Page 14 3.10. Power Supplies The M-1620 Pro D has an internal power supply (PSU) that is connected via an IEC C14 inlet labeled "PSU" at the rear of the device. It is a high performance switch mode power supply that accepts 100V to 240V AC.
  • Page 15 Redundancy is established when both inlets are connected to a power source. Additionally, both inlets are internally monitored. The M-1620 Pro D can warn when one of the inlets receives no power. The power supply must be capable of delivering 3 A at 12 V DC and connect with a type A (IEC 60130-10) plug (5.5 mm outer diameter, 2.1 mm inner diameter, positive polarity, optional lock tab).
  • Page 16 • Channel separation: > 110 dB 3.13. Analog Line Output Connectors The rear of the M-1620 Pro D features two 25-pin D-sub connectors labeled "LINE OUT" with Tascam®- pinout. The short circuit protected, low impedance balanced line outputs at the D-Sub connectors do not operate servo balanced.
  • Page 17 Practice. 3.16. MADI Coaxial and SFP The rear of the M-1620 Pro D features coaxial and SFP MADI (AES10-2003) I/O. Each input receives up to 64 audio channels. Auto Input (see Section 9.2.2, “Connecting Two Identical MADI Signals for Redundancy”) can be activated to treat both inputs as one.
  • Page 18 3.18. Network Connection On the rear of the M-1620 Pro D, two RJ45 connectors labeled NET (PRI) and NET (SEC) provide ethernet connectivity. The supported link speeds are 1 Gb/s and 100 Mb/s. A green LED (left, LINK) signals a successful link. A yellow LED (right, ACT) signals network traffic (blinking).
  • Page 19 • up to 64 audio channels when connected to a Dante® network, and • remote status/control with HTTP over IP routed networks. The current link state is also shown on the display of the M-1620 Pro D. Two network port icons in the menu reveal the following states:...
  • Page 20 3.20. USB 2.0 Type B Jack The USB jack at the rear of the M-1620 Pro D provides an alternative connection method for web remote control when a network connection is not available.
  • Page 21 RME M-1620 Pro D User’s Guide Mount each bracket with two screws using a Philips PH-1 screwdriver. Do not use screws other than the ones included. Using longer screws can damage the  device internally!  Never insert the screws without the rack adapter bracket. This could damage of the device!
  • Page 22 RME M-1620 Pro D User’s Guide 4. Accessories RME offers several optional components for the M-1620 Pro D: Part Number Description External Power Supply NT-RME-11 External power supply with locking connector, 12 V DC, 3 A, 40 W Analog breakout cables AI25-8XPro3 Analog breakout cable 25-pin D-sub to 8 x XLR female, 3 m (9.9 ft)
  • Page 23 This software must be installed on a computer connected to the same network that the M-1620 Pro D has been connected to. Once connected, the M-1620 Pro D appears as a device in each of the Dante Controller’s main tabs Routing, Device Info, Clock Status and Network Status:...
  • Page 24 RME M-1620 Pro D User’s Guide When the M-1620 Pro D is leader, it can either use its internal clock oscillator as a reference, or one of the incoming MADI or word clock signals. 5.1. Identifying a Device Remotely When several M-1620 Pro Ds are connected to the same network, each device has its own remote control.
  • Page 25 RME M-1620 Pro D User’s Guide 6. Quick Start (Dante) Follow this procedure to get running quickly! 1. Load Preset 16 (Factory settings) from the STATE section 2. In the CLOCK section, choose a sample rate and verify that Dante is chosen as the current clock source.
  • Page 26 The distributor does not accept claims for damages of any kind, especially consequential damage. Liability is limited to the value of the M-1620 Pro D. The general terms of business drawn up by the distributor apply at all times.
  • Page 27 RME M-1620 Pro D User’s Guide 7.3. Support Contacts Additionally, the following global service centers can provide support assistance: Europe Audio AG, Germany support@rme-audio.de Synthax U.K. info@synthax.co.uk Asia/Australia RME Trading Ltd., Hong Kong support@rme-trading.hk Americas Synthax Inc., U.S.A. tech.support@synthax.com Global support@rme-audio.de...
  • Page 28 RME M-1620 Pro D User’s Guide 8. STATE Section The STATE section contains states and settings that are unrelated to audio I/O and clock. It can be used to configure power supply warnings, presets, dark mode, level meters, and remote control.
  • Page 29 Any change in the device configuration is persistent. After a power loss, the device will revert back to its last state. Additionally, the M-1620 Pro D can save fifteen states in presets numbered 1-15. After a preset is loaded, any change in the configuration will result in an unsaved changes state.
  • Page 30 3. Press the Save button 8.2.2. Loading Presets Up to 15 custom presets can be loaded from the internal storage of the M-1620 Pro D. Loading a preset cannot be undone. Ensure that any important configuration has been ...
  • Page 31 STATE section. 8.3. Device Lock The M-1620 Pro D can be secured against both accidental and intentional changes to its configuration. Locking the device, with or without code, protects against changes on the device itself. When locked, the display shows a lock symbol.
  • Page 32 The brightest LED corresponds to the value indicated beside it. This technology enables the M-1620 Pro D to display a range from –70 dBFS up to clipping using only six LEDs.
  • Page 33 RME M-1620 Pro D User’s Guide 8.4.1. Dark Mode Each of the three front panel illumination sections can be switched off if they are not required. To turn off illumination on the device: 1. Open the visual feedback tab in the STATE section.
  • Page 34 RME M-1620 Pro D User’s Guide Status Indicator State of Visual Feedback Front Panel Dark Mode Global Metering Options Peak/Over Hold Reset 2. Use the corresponding toggle switches on the web remote to switch off device lighting. 8.4.2. Changing the Meters to Peak or RMS Mode Depending on the application, instantaneous peak level metering or a slower, averaged RMS metering may be preferred.
  • Page 35 RME M-1620 Pro D User’s Guide 1. Connect to the device remotely (see: Section 8.5.1, “Finding the Device on a Network”). 2. Locate the visual feedback tab in the STATE section. 3. Push the Peak or RMS button in the global metering settings.
  • Page 36 When opening the ports, larger levelmeters are shown with precise levels for Peak and RMS values. 8.5. Remote Control Overview The M-1620 Pro D can be remote controlled. Remote control is activated by default and is not affected by preset changes or device lock.
  • Page 37 Ethernet The integrated ethernet adapter will join an IP network when connected. If no DHCP server is found, for example when connecting the M-1620 Pro D directly to a computer, an address is automatically self- assigned (in the 169.254.0.0/16 subnet).
  • Page 38 RME M-1620 Pro D User’s Guide 8.5.2. Web Remote An integrated web server provides an easy-to-use remote control interface for the M-1620 Pro D. It requires a network connection from a desktop or tablet computer with a current browser version.
  • Page 39 Control protocol. Detailed background information on the underlying technology can be found on the Sennheiser® website. The M-1620 Pro D can be remote controlled with HTTP POST requests. Each request carries a data payload that contains a JSON object modeled after the open sound control (OSC) protocol.
  • Page 40 RME M-1620 Pro D User’s Guide For example, if the device is connected to a computer that can run cURL in a terminal application (Microsoft Windows™ PowerShell or Apple macOS™ Terminal), the following command will request the entire device schema as a JSON object: Request: curl --header "Content-Type: application/json"...
  • Page 41 It is recommended to first improve overall ambient temperature and airflow around the unit, especially at its bottom and sides, to minimize fan noise. When using the M-1620 Pro D in a hot environment, the Cool fan profile can be used to improve air flow. In silent environments, the Off profile can be used to only start the fans when the device is overheating.
  • Page 42 By default, the M-1620 Pro D employs a sharp filter with short delay at standard sampling rates (44.1 kHz and 48 kHz) and a slow filter with short delay at higher sampling rates (88.2 kHz, 96 kHz, and above).
  • Page 43 RME M-1620 Pro D User’s Guide 8.7.1. Changing the Aliasing Filter The aliasing filter is stored within the current preset and is recalled when loading a preset. To change the aliasing filter on the device: 1. Open the STATE section (see: Section 2.2, “Use of the Display and Encoder”) 2.
  • Page 44 RME M-1620 Pro D User’s Guide 8.8. Device Information The information tab is located in the STATE section. It shows the current firmware version and gPTP grandmaster IDs. The information tab is only available on the device itself. 39 | 8.8. Device Information...
  • Page 45 9.1. Analog Inputs The line level inputs of the M-1620 Pro D accept levels of up to +24 dBu. Each individual channel has its own line level setting of +13/+19/+24 dBu which can also be adjusted remotely. Additionally, the AD converters can be globally set to standby (mute).
  • Page 46 3. Press one of the buttons for +13 dBu, +19 dBu or +24 dBu below the selection. The selected value is shown within the level meter. 9.2. MADI Inputs The M-1620 Pro D accepts up to two MADI signals, one electrical (BNC input) and one optical via optional SFP module (LC input). To connect a MADI signal: 1.
  • Page 47 2. Toggle the switch "Auto Input" to ON. 9.3. Dante Input Connections to the M-1620 Pro D are created and inspected using the Dante® Controller. It can be downloaded as described here: Dante Connectivity. On the web remote, the Dante input is shown as an expandable tile with all incoming audio levels: Routes from any incoming Dante channel can be internally connected to any output channel.
  • Page 48 If several ports are used at the same time, it must be ensured that they are synchronized - for example by connecting Word Clock or ADAT signals from the M-1620 Pro D to the devices and synchronizing them to the incoming digital signal.
  • Page 49 In the OUTPUT section, MADI Optical 1-12 is chosen as source for Dante® channel 1-12. The M-1620 Pro D is clock master, but the incoming MADI signal is not correctly synchronized. This causes a warning in the INPUT section. If MADI Optical is not routed to any output, an invalid or missing signal does not cause a warning.
  • Page 50 5. Drag the handle onto the source channel strips to select a range of channels as signal source. 10.2. Analog Outputs The line level outputs of the M-1620 Pro D operate at +13 dBu, +19 dBu, or +24 dBu. Each individual channel has its own line level setting, which can be adjusted remotely. Additionally, channels can be muted globally or individually.
  • Page 51 RME M-1620 Pro D User’s Guide 10.2.1. Adjusting the Output Line Level To adjust the output line level: 1. Open the Analog Output Configuration tab in the OUTPUT section. 2. Initially, the cursor will highlight all output channels. To accept this, rotate the encoder to move the cursor to the current reference level.
  • Page 52 RME M-1620 Pro D User’s Guide Cursor (current channel) Channel Mute 3. Move the cursor to Mute Toggle and push it. To mute an output channel using the web remote: 1. Select an analog output channel by clicking the corresponding channel strip. The channel strip turns blue.
  • Page 53 RME M-1620 Pro D User’s Guide  Press the Shift key while dragging the knob for finer adjustments.  Clicking twice on the encoder knob opens a text field that can be used to input a value using the keyboard.
  • Page 54 10.3. MADI Outputs The MADI outputs of the M-1620 Pro D are always active. If no routing is configured, an empty stream is sent that can be used for clocking. The state without routing is represented with a light-green Status Indicator.
  • Page 55 The M-1620 Pro D features independent routing for both MADI output ports. For this reason, a "mirroring" of the signal must be manually created. In order to do this, the routing of the two MADI outputs should be configured to contain the same routing.
  • Page 56 Dante Controller. 10.5. ADAT Outputs The ADAT outputs of the M-1620 Pro D are always active. On a new device, with preset 1 loaded and not modified, the analog input channels 1-8 are sent to ADAT port 1, and channels 9-12 are sent to ADAT port 2.
  • Page 57 11.2. Leader Clock In its default state, the M-1620 Pro D uses an internal reference clock for its audio signals. When connected to other Dante® devices, one device is elected the Leader Clock, and the other devices...
  • Page 58 When receiving MADI signals from other devices, these signals must use the same reference clock as the M-1620 Pro D. This is usually achieved by connecting a MADI or Word Clock signal from the M-1620 Pro D to the other MADI device. The other device must then be configured to use that signal as a reference clock signal.
  • Page 59 RME M-1620 Pro D User’s Guide 11.2.1. Synchronizing to External To configure an external clock preference on the device: 1. Enter the CLOCK section (see Section 2.2, “Use of the Display and Encoder”). 2. Enter the submenu "Set Clock Source"...
  • Page 60 RME M-1620 Pro D User’s Guide 11.3. Sample Rates Overview The M-1620 Pro D supports the following sample rates: Supported sample rates Single speed 44.1 kHz, 48 kHz Double speed 88.2 kHz, 96 kHz Quad speed 176.4 kHz, 192 kHz 11.3.1.
  • Page 61 11.3.3. Effects of Sample Rate Changes on Existing Routing The M-1620 Pro D saves one routing table per preset, regardless of sample rate. A change of sample rate or MADI frame mode can reduce the number of input and output channels available for routing. This does not alter the routing table.
  • Page 62 RME M-1620 Pro D User’s Guide 2. Move the cursor onto the toggle switch Word Out Single and push the encoder to change the value. To set the Word Clock output to single speed on the web remote: 1. Locate the CLOCK section.
  • Page 63 RME M-1620 Pro D User’s Guide 12. Annex Trademarks and Copyright All trademarks, registered or otherwise, are the property of their respective owners. RME is a registered trademark of RME Intelligent Audio Solutions. SyncCheck, SteadyClock, ICC, Intelligent Clock Control and Digiface are trademarks of RME Intelligent Audio Solutions.
  • Page 64 RME M-1620 Pro D User’s Guide Glossary 96k frame MADI sources with a sample rate of 88.2kHz or 96kHz can be configured to use the so-called 96k frame. If this frame is used, a sample rate of 88.2 or 96 kHz can be detected on the receiver side automatically.
  • Page 65 Responsible Party in USA: Synthax United States, 6600 NW 16th Street, Suite 10, Ft Lauderdale, FL 33313 T.:754.206.4220 Trade Name: RME, Model Number: M-1620 Pro D 12.1.3. Note on Disposal According to the guide line RL2002/96/EG (WEEE – Directive on Waste Electrical and Electronic Equipment), valid for all european countries, this product has to be recycled at the end of its lifetime.

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