User manual RANE RPM 2

[. . . ] Launch the Drag Net application and follow the steps to create a new project and new RPM 2 device configuration. Click the Configure Hardware IP shortcut and follow the instructions to set the unit's IP address to be compatible with your computer's Network settings. Tip: If you aren't sure what IP to use, try the address 192. 168. 69. 69 and subnet 255. 255. 255. 0. A device name and IP address should appear under the Live folder in the Project window. [. . . ] LINK lights solidly when a valid connection to another Ethernet device (e. g. , a PC) is detected. 6 10Base-T jack accepts a standard Ethernet cable with a RJ-45 connector. Holding this button while applying power puts the unit into a special codeload mode for updating firmware. Manual- Audio Connections As a safety precaution, turn all devices (especially power amplifiers) OFF when making connections. Doing so gives you a chance to find and correct wiring mistakes and prevent damage to your amplifiers, speakers, ears, pets, etc. Analog Inputs and Outputs The RPM 2 has two balanced analog Inputs and two balanced analog Outputs. For each Input or Output Euroblock connector: · Connect the (positive) audio line to the `+' terminal. · Connect the (negative) audio line to the `­' terminal. For those installations where the RPM 2's internal shieldto-chassis connection causes interference, connect each shield directly to the chassis PEM nut located above each Euroblock connector, keeping the shield wrapped around the audio conductors as much as possible. For optimum Electromagnetic Interference (EMI) immunity, connect the shields at both ends of the cable. See the RaneNote "Sound System Interconnection" for more information on system connections and proper grounding practices. Analog Input Stage Each analog input uses a fixed analog gain approach. A Digital Trim control is located immediately after the A/D converter. The RPM 2 takes the following approach to input clipping: The analog input stage accepts a full level of +24 dBu. It is not possible to clip the A/D converter with normal audio sources, since there is no additional gain between the initial input stage and the A/D converter. The Digital Trim control, located after the A/D converter, can be set to clip the signal to your heart's content, so adjusting this trim to provide the hottest signal to the DSPs without clipping is the most important step when setting up gain structure. For this reason, a dedicated meter displaying the signal level being passed to the DSPs is provided in each Analog Input block. If the DSPs are working with a clipped signal, the audio is (as expected) distorted and none too pretty, but it is not a drastic, damaging sound. And while it's technically possible to write a DSP algorithm to emulate the glorious clipping distortion of vacuum tubes, it's not particularly useful for an installed sound system, where the DSP power could be put to better use removing that annoying 500 Hz feedback from the podium mic. Plus, they don't yet make DSP chips with gold-plated substrates for those celestial highs and that moist, supple midrange. There is a Digital Trim control located immediately before the D/A converter. It's as simple as that. Control Connections Versatile Input Port (VIP) Eight logic input pins are provided, each capable of accepting DC voltage between 0-5 VDC. VIP pins are used with contact closure switches for Preset recall, or with potentiometers for remote Level control. [. . . ] For example, if pin 3 is shorted to GND and pin 6 is then shorted to GND, Preset 6 is recalled. If pin 3 is closed and then pin 2, nothing happens -- Preset 2 is not recalled. This permits a hierarchy of Presets when using VIP pin closures for tiered priority paging. Since there are only eight VIP pins, you can only recall up to eight Presets using switch closures. [. . . ]