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3.0 CONFIGURATION
The Model 457B offers the option of configuring individual RJ-45
ports for specific twisted pair pin-outs. This section tells how to access
and set the internally mounted jumpers for each port.
3.1 DEFAULT SIGNAL-TO-PIN CONFIGURATION
The Model 457B is configured at the factory so that RJ-45 pin 4
corresponds to TIP and RJ-45 pin 5 corresponds to RING. This
default setting applies to the single host connection as well as the
seven terminal connections. Figure 1 (below) shows the pin numbering
scheme Patton follows with respect to the RJ-45 jack. If your wiring
scheme uses RJ-45 pins 4 and 5 in the manner described above, you
may move on to Section 4.0 Installation.
3.2 CHANGING THE SIGNAL-TO-PIN CONFIGURATION
If your RJ-45 twisted pair wiring scheme calls for pin-outs other
than TIP-4 and RING-5, you will need to re-configure the Model 457B
according to the following instructions.
1. Make sure the Model 457B's power is OFF.
2. Remove the two black Phillips head screws from the front of
the Model 457B and slide the PC board out of the case.
(continued)
2.0 GENERAL INFORMATION
Thank you for your purchase of this Patton Electronics product.
This product has been thoroughly inspected and tested and is
warranted for One Year parts and labor. If any questions or problems
arise during installation or use of this product, please do not hesitate to
contact Patton Electronics Technical Support at (301) 975-1007.
2.1 FEATURES
• Provides "Star" distribution for seven AS/400 or 3X terminals
• Supports cost-effective unshielded twisted pair communication
• Active signal regeneration enables hub-to-terminal distances of
2250 ft and host-to-terminal distances of 4500 ft
• LED status indicators for each RJ-45 twisted pair port
• Transparent to data protocol—supports data rates to 1 Mbps
• 100% compatible with Patton Model 410 Twinax baluns
• Separate signal-to-pin configuration for each port
• Transformer isolation at every port
2.2 DESCRIPTION
The Patton Model 457B AllStar
TM
is an active seven port
distribution hub for AS/400 and 3X systems. The Model 457B
distributes one twisted pair 1Mbps host to seven twisted pair 1Mbps
terminals. It is designed to be used in conjunction with Patton's Model
410 Series twinax baluns which adapt the host and terminal ports from
twinax to twisted pair.
The Model 457B features modular RJ-45 ports on the seven
terminal channels, and an RJ-45 port plus screw terminals on the host
channel. The host and terminal can be at distances up to 2250 feet,
and each terminal and its port can also be at distances up to 2250 feet.
This yields a maximum host-to-terminal distance of 4500 ft, and a total
aggregate cabling distance of 18,000 feet. The Model 457B has one
LED per port to indicate data activity. For added convenience, each
port has its own pair of internal straps that allow "tip" and "ring" to be
assigned to any of the eight RJ-45 pins.
Optional 19" rack mount hardware allows two Model 457Bs to be
installed side-by-side in a single 1U rack space. Additional space is
conserved by operating the two rack mounted 457Bs from a single AC
power supply harness. Power supplies of 120 or 240 volts are
available for both stand alone and rack mount units.
3 4
Figure 1. RJ-45 pin numbering scheme
showing default configuration
1 2 3 4 5 6 7 8
RJ-45 Jack
Front View
TIP
RING