Patton electronics 1012ARC User Manual

Contents

user manual

2.0 GENERAL INFORMATIONThank you for your purchase of this Patton Electronics product.This product has been thoroughly inspected and tested and iswarranted for One Year parts and labor. If any questions or problemsarise during installation or use of this product, please do not hesitate tocontact Patton Electronics Technical Support at (301) 975-1007.2.1 FEATURES• Houses two short range modems• Full or half duplex• Asynchronous data rates to 38.4 Kbps• Point-to-point or multipoint• Automatic equalization and gain control• Software and hardware handshaking• Distances to 6 miles over two unconditioned twisted pair• Transformer isolation• Silicon Avalanche Diode surge protection• Mounts in Patton’s rack chassis• Made in USA2.2 DESCRIPTIONThe Patton Model 1012ARC is a miniature rack card designed tohouse two asynchronous short range modems. Operating full or halfduplex at data rates to 38.4 Kbps, the Model 1012ARC supports point-to-point or multidrop applications and offers automatic equalization andgain control. The Model 1012ARC supports distances up to 6 milesover two twisted pair. Built-in transformer isolation and surgeprotection provide protection against ground potential differences andAC/DC over-voltages, making the Model 1012ARC ideal forconnections between two buildings.The Model 1012ARC is designed to mount in Patton’s Model1000R16P rack chassis. This 16-card chassis has a switchable120/240 volt power supply and uses mid-plane architecture: The frontcard can be plugged into different rear cards. This means that the1012ARC can have several interface options, and can be switched withother Patton short haul cards. The rear card is available with an RJ-45connection for each RS-232 channel and either RJ-11 or RJ-45connections for twisted pair.33.0 CONFIGURATIONThe Model 1012ARC rack card is easy to set up since there areonly two configuration straps. Figure 1 (below) shows the location ofthese straps on the Model 1012ARC PC board.3.1 MOVING THE CONFIGURATION STRAPSFigure 2 shows how to move the configuration straps. Note that theModel 1012ARC only has two pegs, thus the straps can only be“installed” or “removed”. The rear card uses three pegs, and can be oneither pegs 1 and 2, or pegs 2 and 3.3.2 SETTING THE RTS/DCD STRAPSEach RTS/DCD strap affects one of your modems. Their settingdetermines how the respective transmitters (i.e., carrier) are activated.When these straps are installed, the Model 1012ARC transmitter isCONTROLLED CARRIER. When these straps are removed, thetransmitter is CONSTANT CARRIER. Each strap may be configuredseparately.4Figure 1. Model 1012ARC, showing straps locationsRTS Channel ARTS Channel BFigure 2. Orientation of interface card straps1 2 3 1 2 3 1 2 3