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Resumen del manual
This system provides a lower cost and a higher performance alternative to the concept of feeding home runs (a run of cable) to a single large distribution amplifier. In the Serial Distribution System, up to thirty DA1904SX units may be installed at each monitor location along the bus, which is created by using VGA-type cables connected to the 15-pin HD input and loop output. Each monitor is fed from the RGBHV output. In this system, the DA1904SX units may receive their origin feed from an output module (DA1902SX). TECHNICAL SPECIFICATIONS 3 FEATURES/DESCRIPTION DA1904SX GENERAL Input 1 Input Connector 15-pin HD Female Output 2 Loop Output Connector 15-pin HD Female Main Output Connector 5 BNC Female Compatibility VGA, SVGA, XGA, high resolution RGBHV, RGBS, RGsB and RsGsBs Table 1. DA1904SX General MECHANICAL DA1904SX Material 0.1” Al Finish Gray Top Panel Lexan Height (inches) 3.00in (76mm) Width (inches) 4.50in (114mm) Depth (inches) 1.00in (25mm) Weight (pounds) 0.4lbs (0.18kg) Ship Weight (pounds) 2.0lbs (0.91kg) T° Operating 10°C-35°C T° Maximum 50°C Humidity 90% non-condensing MTBF (calculations) 40,000 hrs Table 2. DA1904SX Mechanical ELECTRICAL DA1904SX Input Video Signal Analog Signal 1.5V p-p max Impedance 75 Ohms Input Sync Signal Horizontal, Vertical, & C-Sync TTL(+/-) Sync on Green -0.3V Impedance 10 k Ohms Output Video Signals Analog Signal Gain of 1.05 (+/-5%) Fall/Rise Time (ns) 1.4 Impedance 75 Ohms 3 DISTRIBUTION AMPLIFIERS Output Sync Signal Composite Sync TTL(+/-) Sync on Green -0.3V Impedance 22 Ohms Frequency Compatibility Typical Video Bandwidth 380 MHz Minimum Video Bandwidth 350 MHz Horizontal 15-200 kHz Vertical 47-180 Hz Coupling DC Cross-talk -40dB @ 10MHz Power External Power Adapter 9V 500mA Power Consumption 4 watts max. 4 Table 3. DA1904SX Electrical DESCRIPTION OF DA1904SX 4 4.1 INPUT AND OUTPUTS The DA1904SX is a special application distribution amplifier providing one VGA (SVGA, XGA) type input on a 15-pin HD connector and one RGBHV buffered input on a 15-pin HD connector. It also provides one RGBHV buffered output on 5 BNC connectors and one VGA (SVGA, XGA) loop output on a 15-pin HD connector. The loop output should be no longer than twelve feet for most applications. Typically, a VGA-type 15-pin HD male to 15-pin HD male cable will be used. The DA1904SX may be used. The DA1904SX may be used with a variety of input cable types, though the cable should be of high quality output. DISTRIBUTION AMPLIFIERS PIN No. Input signals on 15-pin HD female connector 1 Red 2 Green 3 Blue 4 No connection 5 Ground 6 Ground 7 Ground 8 Ground 9 No connection 10 Ground 11 No connection 12 No connection 13 Horizontal Sync 14 Vertical Sync 15 No connection Table 4. The DA1904SX Input pin-outs APPLICATION DIAGRAM 5 5 DISTRIBUTION AMPLIFIERS THE SERIAL DISTRIBUTION SYSTEM In addition to acting as a single distribution amplifier, the DA1904SX may act as a building block in the Altinex Serial Distribution System. The Serial Distribution system provides a method of distributing a video signal to several displays in an application where the displays are typically spread a few distances apart. When numerous runs are made from the displays back to a single distribution amplifier at a centralized location, it is known as the home run approach. The Serial Distribution System, an alternative to the home run approach, uses the concept of a video bus to provide greater ease of installation and greater flexibility. In the Serial Distribution System, the DA1904SX acts as an output module. Typically, the source signal is connected to the input of a DA1902SX and this becomes the starting point for the bus. The outputs are then connected to the output modules, DA1904SX which are usually located at each display site and provides a way in which the display can be fed while still maintaining a video bus output to several monitors. A maximum of 30 DA1904SX units and a total system length of no more than 300 hundred feet are recommended for optimum performance. See the Serial Distribution System diagram on the following page for an example of the way in which the Serial Distribution System can be applied. 6 DISTRIBUTION AMPLIFIERS INSTALLING YOUR DISTRIBUTION AMPLIFIER 6 ACCESSORIES 8 Step 1. Make sure that the correct power adapter is connected to the unit. A red LED will light to indicate that the unit is receiving power. Step 2. Connect the video output of the source (computer or other high-resolution source) to the input of the DA1904SX using a short, high quality coaxial-type cable. Typically, this will require the use of a VGA Male to Male cable (CB3700 Series). Step 3. Connect monitors or projectors to the main output of the DA1904SX using the appropriate RGBHV (CB4200 Series) type cables or adapter cables. Step 4. If the DA1904SX is being used in the Serial Distribution System, make sure that the end of the video bus is properly terminated with a monitor or with a termination plug. This would usually be don...