User manual XTA 4

[. . . ] 1. 10 Page 2 4 Series Operator's Manual 4 Series Quick Reference Editing channels : press channel's GAIN key. First press accesses that channel's gain. To scroll through channel's parameters, use the BACK and NEXT keys. Second press accesses last viewed parameter. [. . . ] Cables to connect units together or to an RS232-485 converter will need to be wired one-to-one. We recommend the use of standard shielded microphone cables, or a balanced feed from a multicore. RS485 is a fully balanced system, capable of sending data over distances of up to one kilometre. Note, however, that this is the total length of connection. The RS485 output of each unit is purely hardwired from the input and so no electrical regeneration of the signal is provided. What this means is that the distance from the first RS485 output to the last RS485 input must not exceed 1km in total. As this diagram illustrates ­ The combined length of cables 01 + 02 + . . . NN < 1000 metres. Note that this includes any units set up as shadow IDs. XTA has a range of tried and tested interfaces, all of which are listed in the XTA Interface Guide, available from our website. We can supply all the interfaces described in this guide directly ­ please get in touch. Page 28 4 Series Operator's Manual RS485 Connection To use RS485 communication directly from a computer, a master unit must be configured to receive RS485. You must have a suitable RS485 port on your computer, or a converter connected to the serial port in use. This configuration is shown below, along with the required unit setup. Both the converter and the required adapter cables are available from XTA. The adapter is available in a kit, which includes an RJ-45 adapter, the XLR to 9-pin adapter, and the converter itself. This complete kit is part number INT-485. If you need to make up one of the XLR to 9-pin adapters, the pin-out is: XLR 1 2 3 D-type 1 3 8 Operators Manual Page 29 ¥ ¥ ¥ ¥ ¢ ¢ ¢ ¢ ¤ ¤ ¤ ¤ £ £ £ £ ¢ ¢ ¢ ¢ ¡¡ ¡¡ If your laptop or PC does not have a spare serial port (or any serial ports for that matter!), the RS485 converter must be connected through a USB ­ Serial converter. The RS485 converter that XTA recommend is available in two types ­ the standard K2, and the more advanced K2-ADE version. Only K2-ADE version will work with USB-Serial converters, as these converters do not support the extra handshake lines used with the standard converter. Both the converters and the required adapter cables are available from XTA. The adapter is available in a kit, which includes a USB-Serial converter, the XLR to 9-pin adapter, and the K2-ADE converter itself. This complete kit is part number USB-485. XTA has a range of tried and tested interfaces, including USB and wireless solutions, all of which are listed in the XTA Interface Guide, available from our website. We can supply all the interfaces described in this guide directly ­ please get in touch. If a DP224/6 receives a MIDI Start or Stop command (used to mute / unmute all outputs) it will relay this message on the RS485 port to any connected units. [. . . ] Set the turnover frequency of this filter to be the same as that of the crossover filter. Make sure you chose a high pass elliptical to work with a high pass crossover, and low pass elliptical to work with a low pass crossover. InA Input A HPF:1/~~ 250Hz HP Ellip Operators Manual Page 49 ¥ ¥ ¥ ¥ ¢ ¢ ¢ ¢ ¤ ¤ ¤ ¤ £ £ £ £ ¢ ¢ ¢ ¢ ¡¡ ¡¡ Specifications Inputs: 2/4 electronically balanced Impedance: > 10k ohms. Outputs: 4/6/8 electronically balanced Source Imp: < 60ohms Min. [. . . ]