BASIS 722az 8x8 Control and Monitoring Signal Processor Hardware Manual *TD-000145-00* TD-000145-00 rev.
IMPORTANT SAFETY PRECAUTIONS & EXPLANATION OF SYMBOLS The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous” voltage within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to humans. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in this manual.
Introduction The BASIS 722az provides the signal processing, control and status monitoring facilities needed to bind a group of amplifiers and loudspeakers into an integrated functioning system. In conjunction with QSControl.net software, the BASIS 722az enables the user to design, test and deploy professional audio reinforcement and distribution systems. Each QSC power amplifier connects directly to a BASIS 722az via one of its four QSC DataPorts.
Block Diagram Introduction - Networking the BASIS 722az The BASIS 722az includes an RJ-45 network connection port on the rear panel, which is labeled "QSControl". All data communications between the BASIS 722az and a control computer, such as a PC running the QSControl.net server or client application, takes place via this rear panel QSControl port.
Example 1- QSControl.net X-over mode: This example illustrates the simplest connection you can make between the BASIS 722az and a computer. You simply use a CAT-5 crossover cable connected between the BASIS 722az rear panel QSControl port and a computer's network interface card, (NIC). Note that the computer’s NIC must support 10BASE-T Ethernet (nearly all do). No network switch or repeater is required with this simple connection scheme. With QSControl.
Example 3- Managed Switch (configured with multiple VLANS): This example illustrates a managed Ethernet network. An managed switch is used to partition the network into two domains; one for QSControl traffic and one for all non-QSControl traffic. The partitioning provides a dedicated virtual local area network (VLAN) for the BASIS 722az and all other QSControl devices, including a management PC running the QSControl.net server or client application.
Unpacking There are no special unpacking precautions. However, it is recommended you keep the original packing material for reuse in the rare event that service be required. If service is required and the original packing material is not available, ensure that the unit is adequately protected for shipment (strong box of appropriate size, sufficient packing material to prevent load-shifting or impact damage) or call QSC’s Technical Services Department for packing material and a carton.
Computer Requirements & Software Installation Installing QSControl.net is easy. All you need to do is choose the folder where the program is to be stored (the default setting is acceptable for most applications). We recommend your system meet the following minimum requirements: 1- IBM PC compatible computer with a Pentium 4 processor. 2- Processor speed of 1 GHz (2 GHz or faster recommended for systems with 30 or more BASIS units).
Connections AC Power Cord Insert the molded receptacle of the AC power cord into the AC power inlet on the back of the BASIS 722az. Plug the AC line connector into the AC outlet. The power supply will accept from 100 to 240 Volts AC, 47 to 440 Hertz, without any changes. If a different type of IEC power cord is required than supplied with your 722az, contact QSC’s Technical Services Department. QSControl connection. Accepts ruggedized or normal shell-less RJ45 plugs.
Monitor Chain The MONITOR CHAIN connector is a 5-pin terminal block connector. Input and output connections are balanced. The center pin is the shield connection for both the input and output of the monitor chain. Connection is shown at right. The left-most + and - terminals are for monitor chain input signals, while the right-most terminals are for monitor chain output signals. When powered down, a relay connects the input to the output, thus bypassing the BASIS 722az in the monitor chain.
LED Indicators (continued) QSControl and CobraNet Network Status (Port) Indicators- There is a group of three LEDs on the front and rear panels of the BASIS 722az labeled RX, TX and LINK. These indicate the connection status of the BASIS 722az to the QSControl network. Their functions are described below. Note: the Port indicators on rear panel for the CobraNet Port do not have LEDs installed because the BASIS 722az is not a CobraNet enabled device.
LCD Navigation Map (typical) Left side buttons have screen dependent functions. Use rotary data wheel to edit data. Rotate to move cursor and push to accept change. Boot Screen This read-only screen is the “out of the box” default display after power up. This is the most desired information when first setting up a network system. Once user moves to a different screen, the last screen accessed becomes the new power up default. Main Menu Screens: Right side buttons serve as up/down navigation.
Getting Started This section outlines one of the simpler methods of getting familiar with your BASIS and the QSControl.net software. The goal of this procedure is to get your computer and the BASIS connected and communicating and the QSControl.net software installed and running. After the software is installed and running, refer to the software’s Help file for all software related operation/issues. Note! The default password for the BASIS is “qsc” (no quotes, lower case).
Getting Started (continued) 17- Select Device, Add New 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 Type and select BASIS 722az. At the Password prompt, enter “qsc” (lower case, no quotation marks). This is the device password, separate from the software password. The default, in both cases, is “qsc”, but you are free to change either or both. Enter the IP address of the BASIS and click OK.
Operation QSControl Port The QSControl port operates on a 10BaseT Ethernet network. This port 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-negotiating) network interface card using a crossover cable. Data from the QSControl port may also pass through network repeaters, network switches and routers.
Utility/Diagnostic Functions (continued) RS-232 Communications Procedure: 1) Connect the RS-232 port of the BASIS 722az to an unused serial port (COM port) of a PC using a normal (straight through) serial cable. 2) Open the HyperTerminal program. This program is usually started by clicking the Windows Start icon, selecting Programs, then Accessories, Communications, and finally, highlighting the Hyper Terminal folder and clicking on its icon.
Utility/Diagnostic Functions (continued) Telnet Access The RS-232 features can also be accessed via Telnet. The Microsoft Telnet application is a Windows program. Consult Windows documentation for Telnet information. Basic procedure for opening a Telnet session: 1- To open the Telnet session- Click Start, select Run, type “Telnet” followed by a space, then the IP address of the BASIS 722az you want to communicate with in the text box and click OK.
Preliminary Specification IN Dynamic Range (AES-17, -60dB Method, all sensitivities) unweighted >115dB A weighted >118dB OUT THRU >112dB >115dB >110dB >113dB Distortion (20Hz-20 KHz, all sensitivities) +4dBu (max) 2dB below clip (max) <0.009% THD+N <0.009% THD+N <0.009% THD+N <0.009% THD+N <0.009% THD+N <0.
Preliminary Specification Control Room Foldback Monitoring Connector Type Pinout Tap points 5-pin "Phoenix Style" (a.k.a. "Euro Style") detachable terminal blocks 1:+(input) 2:-(input) 3:CHASSIS GND 4:-(output) 5:+(output) 8 internal input, 8 internal output, 8 amplifier (pre-, post-, amplifier) software selectable Monitor Input Monitor Signal (unit off) Maximum level Impedance (nominal) CMRR, 20Hz-20KHz Unity gain connection, relay bypass +21 dBu 10K ohms >54 dB Monitor Output Monitor Freq. Resp.
How to Contact QSC Audio Products Mailing address: QSC Audio Products, Inc. 1675 MacArthur Boulevard Costa Mesa, CA 92626-1468 USA Telephone Numbers: Main Number (714) 754-6175 Sales & Marketing (714) 957-7100 or toll free (USA only) (800) 854-4079 Customer Service (714) 957-7150 or toll free (USA only) (800) 772-2834 Facsimile Numbers: Sales & Marketing FAX (714) 754-6174 Customer Service FAX (714) 754-6173 World Wide Web: www.qscaudio.com E-mail: info@qscaudio.com service@qscaudio.
