Altinex DA1203RM Application Diagram, Sync Polarity Switch, Sync Level Switch, Video Level Switch

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.

APPLICATION DIAGRAM 5

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 90-140/200- 240V power supply. A variety of different power supplies are available for international use.

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