Assessments - 1, GPA: 5
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Facilidade de uso
could void the user’s authority to operate the equipment. ABOUT YOUR DISTRIBUTION AMPLIFIER 2 The DA1203RM Distribution Amplifier is designed to allow the connection of a single computer or other video source to as many as three scan-rate compatible display devices. Though primarily designed to pass RGBS format signals, the DA1203RM can also pass RGsB, Component Video (Y, R-Y, B-Y), S-Video (Y/C), and Composite Video by using the appropriate analog channels (Red, Green, Blue). The analog channels (Red, Green, Blue) are designed to pass video levels up to 1.5V p-p offering a 0.15% differential gain and 0.16 degree differential phase to assure the highest quality video signal. The DA1203RM offers switches for Gain, Sync Level, and Sync Polarity. The Gain Switch boosts the output of the amplifier by 35% for use, with long cable runs. The DA1203RM uses AGC (automatic gain control) circuitry, which converts all incoming sync levels to either 4V p-p or 2V p-p. This AGC circuitry is selectable with the Sync Level switch. This enables it to be compatible, with current and older display equipment. The Sync Polarity switch reverses the polarity of the incoming sync for compatibility with various displays. The DA1203RM Distribution Amplifier is a state-ofthe- art product with a video bandwidth of 350 MHz, enabling it to remain transparent to the video signal passing through it. Each output is individually buffered and is not affected by other output loading. The DA1203RM offers an internal 90-140/200240V power supply and can be rack mounted using optional accessories hardware ( DA1299RM – rack ears for single unit and DA1298RM – rack shelf for two units side-by-side). TECHNICAL SPECIFICATION 3 FEATURES/DESCRIPTION DA1203RM GENERAL Inputs 1 Input Connector 4-BNC Female Outputs 3 Output Connectors Three 4-BNC Female Compatibility High resolution RGBS, RGsB and RsGsBs, Component, S-Video and Composite Video Table 1. DA1203RM General MECHANICAL DA1203RM Material 0.1” Al Finish Gray Top Panel Lexan Height (inches) 3.40in (86mm) Width (inches) 8.50in (216mm) Depth (inches) 4.75in (121mm) Weight (pounds) 2.6lbs (1.18kg) Ship Weight (pounds) 3.8lbs (1.73kg) T° Operating 10°C-35°C T° Maximum 50°C Humidity 90% non-condensing MTBF (calculations) 40,000 hrs Table 2. DA1203RM Mechanical ELECTRICAL DA1203RM Input Video Signals 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 1.0V p-p/0.7V p-p 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 Horizontal 15-200 kHz Vertical 47-180 Hz 3 DISTRIBUTION AMPLIFIERS Minimum Video Bandwidth 350MHz @ -3dB Typical Video Bandwidth 380MHz @ -3dB Cable Equalization 3dB @120MHz Coupling DC Cross-talk -40dB @10MHz Power Internal Power Supply 90-140V/200-240V Power Consumption 10 watts max. Table 3. DA1203RM Electrical DESCRIPTION OF DA1203RM 4 4 DISTRIBUTION AMPLIFIERS 4.1 SYNC POLARITY SWITCH The SYNC POLARITY switch is located on the back panel of the DA1203RM. It has two switching positions — one designated (+) and the other (-). By setting the sync polarity switch to (+), the signal is processed unchanged and the sync polarity of the output signal matched the sync polarity of the unit. By setting sync polarity to (-) the sync polarity of the output is changed to the opposite of the input. 4.2 SYNC LEVEL SWITCH The SYNC LEVEL switch is also located on the back panel of the DA1203RM and has two positions for switching — sync level of 2V and sync level of 4V. Most often a 4V sync level is used. This should be considered as default setting. The 2V setting allows compatibility with some older equipment that would be overdriven if a stronger signal were used. 4.3 VIDEO LEVEL SWITCH The Video Level Switch can be set to either the standard 0.7V output or to 1.0V output. When the switch is set in the 1.0V output position, this provides approximately a 35% increase in the video signal level. This can be used in installations where cable runs exceed 150 feet. It is not recommended that this switch be set in the 1.0V position for shorter cable lengths as the increased level may reduce the life of CRT displays if they are over-driven. 4.4 POWER The DA1203RM offers an internal 90-140/200240V power supply. A variety of different power supplies are available for international use. APPLICATION DIAGRAM 5 5 DISTRIBUTION AMPLIFIERS INSTALLING YOUR DISTRIBUTION AMPLIFIER 6 OPERATION 7 Step 1. Make sure that the proper power supply is being used with the DA1203RM. Note: The use of an incorrect power supply can result in equipment damage not covered by warranty. Step 2. Connect the power cord to the DA1203RM and plug it into the power outlet. The power indicator LED on the front panel will light. This indicates that the unit is operational. Step 3. Connect the high resoluti on RGsB or RGBS sou...