Instruction/ maintenance manual of the product 914LZ QSC Audio
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TD-000200- 00 rev .A *TD-000200-00* BASIS 914lz 4X16 CobraNet Enabled Control and Monitoring Signal Processor Hardware Manual.
2 IMPORTANT SAFETY PRECAUTIONS & EXPLANATION OF SYMBOLS The lightning flash with arrowhead symbol wit hin an equilateral tri angle is intended to al ert the user to the presence of uninsula ted “dangerous” voltage within the product’ s enclosure t hat may be of sufficien t magnitude to constit ute a risk of electri c shock to humans.
3 Introduction 1- Power indicator 2- Diagnostic indicator 3- Network status indicators 4- Port connection status indicators 5- Multi-function push buttons 6- Display 7- Rotary select/accept knob 8- Sa.
4 0.396 milliseconds. When analog input and analog outputs are used, the total delay is 2.354 milliseconds. The delay does not change regardless of the DSP configuration, unless the configuration intentionally adds more delay . The BASIS 914lz also supports the new optional low-latency CobraNet feature that provi des transport at only 2.
5 Introduction - Networ king the BASIS 914lz The BASIS 914lz has two RJ-45 network connection ports on the r ear panel. One port is labeled "QSControl" and supports standard 10BASE-T Ethernet. The other port is labeled "CobraNet" and supports 100BASE-TX, also k nown as "Fas t Ethernet".
6 Third, the BASIS 914lz and QSControl.net system are targeted at network switch deployments. The consumer costs of Ethernet switches have continued to fall over the last several years and are now comparable with repeaters on a per port basis.
7 Example #2 - CobraN et X-over mode: This is the simplest connection you can make between two BASI S boxes. Use a CA T -5 crossover cable connected between the Cobra- Net ports of each unit. No network switch is required. This connection allows audio to pass between the two BASIS boxes over Co bra- Net.
8 Example #3 - Singl e Wire Interface: Here all QSControl.net and CobraNet traffic shares the same single CA T -5 cable between the BASIS 914lz and an unmanaged Etherne t switch.
9 Example #4 - T wo-Wire Interf ace (shared network hardware): This example illustrates the T wo-Wire Interface with a managed Et hernet switch. The switch is configured with multiple virtual local area networks (VLANs). Ethernet deliveries can only reach des tination ports belonging to the same VLAN from which it was sourced.
10 Example #5 - T wo-Wire Interf ace (separate netwo rk hardware): Example #5 is conceptually similar to example #4. The differenc e here is that separate networks are created by providing each l ocal area network (LAN) with its own network switch. Therefore, tra ffic segmentation is physical rather than logical.
11 Unpacking There are no special unpacking precautions. However , it is recomm ended you keep the original pa cking material for reuse in the rare event that service be required.
12 Computer Requirements & Software Installation Installing QSControl.net is easy . All you need to do is choose th e folder where the program is to be stored (the default settin g is accept- able for most applications). We recommend your syste m meet the following minimum requirements: 1- IBM PC compatible computer with a Pentium 4 processor .
13 General Information & Configuration Memories Amplifier Setup The QSC DataPort-equipped amplifiers connected to the BASIS 914lz must have their power switches in the “on” positi on. For init ial testing, use the lowest useful gain setting until the system is operating as expected.
14 Connections AC Power Cord Insert the molded receptacle of the AC power cord into the AC power inlet on the back of the BASIS 914lz. Plug the AC line connector into the AC outlet. The power supply will accept from 100 to 240 V olts AC, 47 to 440 Hertz, without any changes.
15 RS-232 The RS-232 is an optional utility serial port fo r accessing advanced features. Connect to an available COM port on your PC and communicate using a terminal control program such as Windows Hyperterminal. Use a normal serial data cable with a DB-9 male plug to connect to the BASIS 914lz.
16 LED Indicators (continued) QSControl and Cobra Net Network St atus (Port) Indicators- There are two groups of three LEDs on the front and rear panels labeled RX, TX and LINK. One group is for the QSControl.net network port and the other for the CobraNet network port.
17 LCD Navigation Map Left side buttons have scr een dependent functions. This read-only screen is the “out of the box” default display afte r power up. This is the mo st desired i nfor- mation when first setting up a networ k system. Once user moves to a diffe rent screen , the last sc reen accessed b ecomes the ne w power up de fault.
18 Getting Started This section outlines one of the simpler methods of getting familiar with your BASIS and the QSControl.net software. The goal o f this procedure is to get your computer and the BASIS connected and co mmunicating and the QSControl.net software installed and runnin g.
19 Getting Started (continued) 17- Select Device , Add Device , from the menu. A new window will open prompting you to name the device. Name it logically , such as BASIS 1, or similar . Select the Device T ype and select BASIS 914lz. At the Password prompt, enter “qsc” (lower case, no quot ation marks).
20 Operation QSControl Port The QSControl port operates on a 10BaseT Ethernet network. This por t is one of the primary means for connecting QSControl.net to the BASIS. The port may connect directly to a PC's 10BaseT or 10/100 (auto-sensing or auto-neg otiating) network interface card usin g a crossover cable.
21 Utility/Diagnostic Functions Safe Mode Switch Location of Safe Mode switch: The front panel has a small access hole on the left side, just left of the Power indicator . It is not labeled to help prevent accidental use. The Safe Mode switch c an be operated by using a paper -clip (or similar item) inserted i nto the access hole and pushing.
22 Utility/Diagnostic Fu nctions (continued) RS-232 Communications Procedure: 1) Connect the RS-232 port of the BASIS 914lz to an unused serial port (COM port) of a PC using a normal (straight-through) serial cable. 2) Open the HyperT erminal program.
23 Utility/Diagnostic Fu nctions (continued) T elnet Access The RS-232 features can also be accessed via T elnet. The Micros oft T elnet application is a Windows program.
24 Preliminary Specification IN OUT THRU Dynamic Range (A ES-17, -60dB Method, all sensit ivities) unweighted >112dB >112dB >110dB A weighted >115dB >115dB >113dB Distortion (20Hz-20 KHz, all sen sitivities) +4dBu (max.) <0.009% THD+N <0.
25 Preliminary Specification Omni Inputs 2 discrete inputs for TTL logic, voltage control or passive resistive Connector T ype 2-pin "Phoenix Style" (a.
26 Dimensions.
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QSC Audio Products, Inc. 1675 MacArthur Boulevard Costa Mesa, California 92626 USA ©2005 “QSC” and the QSC logo are registered with the U.S. Patent and T rademark Office. How to Contact QSC Audio Products Mailing address: QSC Audio Products, Inc.
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