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QSC Audio 914LZ - page 1
TD-000200- 00 rev .A *TD-000200-00* BASIS 914lz 4X16 CobraNet Enabled Control and Monitoring Signal Processor Hardware Manual ...
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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. The ...
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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- Safe mode switch (recessed) 9- DataPorts 10- XLR/TRS combo inputs (line level) 11- Omni inputs 12- RS-232 port 13- Network status indicators 14- QSContr ...
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QSC Audio 914LZ - page 4
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 2.66 milli- s ...
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QSC Audio 914LZ - page 5
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". In the followi ng sections we de ...
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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. In addit ion, the sophistication and scalability of network switches make them i deal for new installation ...
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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. Combining example 1 and 2 lets you setup and ...
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QSC Audio 914LZ - page 8
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. The QSControl.net system manages traffic flow efficiently and reliably so that all audio and control data is delivered to its appropriate destination anywhere on the netwo ...
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QSC Audio 914LZ - page 9
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. The figure shows a se ...
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QSC Audio 914LZ - page 10
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. Ex ample #5 also pro- vides an addi ...
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QSC Audio 914LZ - page 11
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. If service is required and the or iginal packing material is not available, ensure that the unit is adequately protected for shipment (strong box of appropriate size, suf ...
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QSC Audio 914LZ - page 12
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 . ...
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QSC Audio 914LZ - page 13
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. After the system setup has been verified and tested, gain ...
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QSC Audio 914LZ - page 14
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. If a different type of IEC power cord is required than supplied with your ...
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QSC Audio 914LZ - page 15
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. T o con- nect the cable, orient the connector proper ...
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QSC Audio 914LZ - page 16
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. Their functions are described below . Note: Port indicators on rear panel are c ...
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QSC Audio 914LZ - page 17
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. Boot Sc ...
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QSC Audio 914LZ - page 18
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. After the software is installed and running, refer to the softwa ...
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QSC Audio 914LZ - page 19
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). This is the device password, separate fro ...
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QSC Audio 914LZ - page 20
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. Data from the QSControl port may ...
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QSC Audio 914LZ - page 21
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. Safe ...
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QSC Audio 914LZ - page 22
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. This p rogram is usually star ted by clicking the Windows ST ART icon, highlighting PROGRAMS, then ...
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QSC Audio 914LZ - page 23
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. Consult Windows documentation for T e lnet information. Basic procedure for opening a T elnet session: 1 - T o open the T elnet session- Click ST ART , select RUN, type “T elnet ...
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QSC Audio 914LZ - page 24
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 <0.009% THD+N <0.009% THD+N 2dB below clip (max.) <0.009% THD+N <0.009% THD+N < ...
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QSC Audio 914LZ - page 25
25 Preliminary Specification Omni Inputs 2 discrete inputs for TTL logic, voltage control or passive resistive Connector T ype 2-pin "Phoenix Style" (a.k.a. "Euro Style") detachable terminal blocks Configuration Single-ended, ground referenced Pinout 1:+(Signal) 2:-(CHASSIS GND) Normal Operating Range Reads signals between 0-5V ...
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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. 1675 MacArthur Boulevard Costa Mesa, CA 92626-1468 USA T elephone Numbers: Main Number (714) 754-6 ...
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