Stimmen - 3, Durchschnittliche Bewertung: 3.3
(
)
)
|
Anleitung Zusammenfassung
DA1902SX Mechanical ELECTRICAL DA1902SX Input Video Signal Analog Signal 1.5V p-p max Impedance 75 Ohms Input Sync Signals 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 Output Sync Signals 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 3 DISTRIBUTION AMPLIFIERS Vertical 47-180 Hz Power External Power Adapter 9V 500mA Table 3. DA1902SX Electrical DESCRIPTION OF DA1902SX 4 INPUT AND OUTPUTS The outputs of the DA1902SX allow signals to be driven through up to 100 feet of cable or more depending on the cable quality and the signal source resolution. The DA1902SX may be used with a variety of input cable types. Generally, 5 BNC RGBHV to RGBHV cables will be used. If it is necessary to adapt from a standard VGA output to the input of the distribution amplifiers, it is also possible to use a 15-pin HD to 5 BNC adaptor as an input cable (MS8100 series adaptor cables). PIN No. Input signals on 15-pin HD female connector 1 Red 2 Green 3 Blue 4 No connection 5 No connection 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 1. The DA1902SX Outputs pin-out 4 DISTRIBUTION AMPLIFIERS APPLICATION DIAGRAM 5 THE SERIAL DISTRIBUTION SYSTEM In addition to functioning as a single distribution amplifier, the DA1902SX may act as a building block in the Altinex Serial Distribution System. The Serial Distribution System provides a manner 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 “homerun approach”. As an alternative to the “homerun approach”, the Serial Distribution System 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. Ordinarily, 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. The output modules provide a way in which the display can be fed while still maintaining a video bus output, which can be connected to several monitors. A maximum of 30 DA1904SX units and a total system length of 300 feet or less are recommended for optimum performance. See the Serial Distribution System on the following page for an example of the manner in which the Serial Distribution System can be applied. 5 DISTRIBUTION AMPLIFIERS INSTALLING YOUR DISTRIBUTION AMPLIFIER 6 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 DA1902SX using a short, high, quality coaxial-type cable. If the source offers a VGA type 15-pin HD connector, Altinex part # MS8102CA (6' 15-pin HD male to 5 BNC male) may be used. Step 3. Connect monitors or projectors to the outputs of the DA1902SX using the appropriate VGA type cables or adapter cables. If the DA1902SX were being used in the Serial Distribution System, the outputs of the DA1902SX would typically be connected to the units of the DA1904SX by using VGA type cables (Altinex CB3700 Series Cables). Step 4. If the DA1902SX 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 done on the loop end of the DA1904SX. Step 5. Verify that the quality of the picture on all displays is perfect. If you are not receiving a signal, make sure that the display is compatible with the resolution of the computer graphics card. CONGRATULATIONS! YOU ARE DONE. If you experience any problems, please call 1-800-258-4623 or 1-714-990-2300 for international calls. 6 DISTRIBUTION AMPLIFIERS OPERATION 7 The DA1902SX will operate successfully as long as the cables are attached properly and other technical specifications are followed. There are no other adjustments necessary to operate the unit. ACCESSORIES 8 Model No. Description RACK MOUNTING ACCESSORIES DA1295RM Mount mini-brackets (2 – “L” shape) VGA MALE TO MALE CABLES (15PIN HD TO 15-PIN HD) CB3703MR 3 ft CB3706MR 6 ft CB3715MR 15 ft CB3725MR 25 ft CB3750MR 50 ft (Super High Resolution Coaxes) CB3775MR 75 ft (Super High Resolution Coaxes) CB37100MR 100 ft (Super High Resolution Coaxes) CB37150MR 150 ft (Super High Resolution Coaxes) VGA MALE TO FEMALE CABLES (15-PIN HD TO 15-PIN HD) CB3903MR 3 ft CB3906MR 6 ft CB3915MR 15 f...