Patton electronic MP3 Player Accessories 460RC User Manual

USER  
MANUAL  
MODEL 460RC  
Rack-Mounted G.703 Coax to  
Twisted Pair  
Adapters (BALUNs)  
SALES OFFICE  
(301) 975-1000  
TECHNICAL SUPPORT  
(301) 975-1007  
Part # 07M460RC-A  
Doc. #019081UA  
Revised 3/13/98  
An ISO-9001  
Certified Company  
 
3.0 CONFIGURATION  
3.1.1 Jumper Straps JP1, JP2, JP3, JP4, and JP7  
Each Model 460RC/F Module is equipped with four jumpers that  
you may use to configure several grounding options. This section  
shows the jumper locations and describes their functions.  
The jumper straps allow you to set shielding and grounding options  
for the Model 460RC/F. The settings for each jumper strap are shown  
briefly in the table below. Following this table are more detailed  
explanations of each jumper.  
3.1 SETTING THE JUMPER STRAPS  
INTERFACE CARD STRAP SUMMARY TABLE #1  
There are five configuration jumpers on the back side of the Model  
460RC/F printed circuit board. These jumpers are labeled below and  
on the PC board as “JP1”, “JP2”, “JP3”, “JP4”, and “JP7”. Figure 1,  
below, shows their positions on the pc board as well as the relative pin  
numbers on the jumpers.  
Strap  
Function  
Position 1&2 Position 2&3  
JP1  
Coax TX Shield & RJ45 Pin 3  
Open*  
Connected  
Open  
JP2 Coax TX Shield & RJ-45 Shield  
JP3 Coax RX Shield & RJ-45 Shield  
Connected*  
Connected*  
Open*  
Open  
JP4  
Coax RX Shield & RJ-45 Pin 6  
Connected  
Open  
JP7 RJ-45 Shield & Chassis Ground  
Connected*  
1
2
3
* Indicates default setting  
JP3  
JP4  
1
2
3
Jumper JP1: 75 Ohm TX Shield to 120 Ohm TX Pair Shield (Pin 3)  
1
2
3
JP2  
JP1  
In the default “Connected” setting, the 75 Ohm transmit out coaxial  
shield connects to RJ-45 pin 3, the transmit pair shield.  
1
2
3
JP7  
JP1  
Setting  
Description  
1
2
3
Position 1 & 2  
Not Connected  
75 Ohm TX shield not  
connected to RJ-45 TX  
pair shield (Pin 3).  
Figure 1. Individual Model 460RC/F Card  
Position 2 & 3  
Connected  
75 Ohm TX shield  
connected to RJ-45 TX  
pair shield (Pin 3).  
Figure 2 (below) shows the orientation of the rear interface card  
straps. Observe that the strap can either be on posts 1 and 2, or on  
posts 2 and 3.  
Jumper JP2: 75 Ohm Shield to 120 Ohm Overall Shield  
In the default “Connected” setting, the 75 Ohm transmit out coaxial  
shield connects to the RJ-45 overall foil shield.  
JP2  
Setting  
Description  
Position 1 & 2  
Connected  
75 Ohm TX shield  
connected to the RJ-45  
overall foil shield.  
Figure 2. Possible Positions for Model 460RC/F Jumpers  
Position 2 & 3  
Not Connected  
4
75 Ohm TX shield not  
connected to the RJ-45  
overall foil shield.  
3
 
4.0 INSTALLATION  
Jumper JP3: 75 Ohm RX Shield to 120 Ohm Overall Shield  
This section describes the functions of the Model 460RC16 rack  
chassis, tells how to install front and rear Model 460RC/F Series cards  
into the chassis, and how to connect to the twisted pair interface and  
the serial interface.  
In the default “Connected” setting, the 75 Ohm receive in coaxial  
shield connects to RJ-45 pin 6, the receive pair shield.  
JP3  
Setting  
Description  
Position 1 & 2  
Connected  
75 Ohm RX shield  
connected to the RJ-45  
overall foil shield  
4.1 THE MODEL 460R16 RACK CHASSIS  
The Model 460R16 Rack Chassis (Figure 3, below) can  
accomodate up to 16 G.703 75 Ohm coax to 120 Ohm RJ-45 baluns.  
Measuring only 3.5” high, the Model 460R16 is designed to occupy only  
2U in a 19” rack. Sturdy front handles allow the Model 460R16 to be  
extracted and transported conveniently.  
Position 2 & 3  
Not Connected  
75 Ohm RX shield not  
connected to the RJ-45  
overall foil shield  
Jumper JP4: 75 Ohm RX Shield to 120 Ohm Rx Pair Shield (Pin 6)  
In the default “Connected” setting, the 75 Ohm coaxial shield  
connects to the RJ-45 overall foil shield.  
JP4  
Setting  
Description  
Position 1 & 2  
Not Connected  
75 Ohm RX shield not  
connected to the RJ-45  
RX pair shield (Pin 6)  
Figure 3. Fully Populated Model 460RC16 Rack Chassis  
Position 2 & 3  
Connected  
75 Ohm RX shield  
connected to the RJ-45  
RX pair shield (Pin 6)  
4.2 INSTALLING THE MODEL 460RC/F MODULE INTO THE  
CHASSIS  
The Model 460RC16 comprised of a 2U high rack chassis and  
individually mountable G.703 balun modules. You may purchase a fully  
populated 16 port rack or you may purchase individual modules. Refer  
to Figure 4 as a guide and follow the steps below to install each Model  
additional 460RC/F module into the rack chassis:  
Jumper JP7: RJ-45 Shield to Chassis Ground  
In the default “Connected” setting, the RJ-45 overall shield  
connects to chassis ground.  
1. Slide the two star washers over the screws on each end of the  
mount space.  
JP7  
Position 1 & 2  
Setting  
Connected  
Description  
RJ-45 shield connects  
to Frame Ground.  
2. Slide the Model 460RC/F pc board over the screws with the  
BNC connectors facing downward. Then push the BNC  
connectors and RJ-45 connector through the matching slots in  
the front of the rack assembly.  
Position 2 & 3  
Not Connected  
RJ-45 shield does not  
connect to Frame  
Ground.  
3. Slide a plastic spacer over each screw to secure the pc board.  
5
6
 
4. Install the lexan shield over the spacers.  
4.4 CONNECTING THE 120 OHM RJ-45 PORTS  
The pin configuration of the 120 Ohm twisted pair port is shown  
below:  
Star Washer (behind  
460RC/F Module)  
RJ-45 Pin(s)  
Function  
1 ................................TX Output  
2 ................................TX Output  
3 ................................TX Shield  
4 ................................RX Input  
5 ................................RX Input  
6 ................................RX shield  
7 ................................no connection  
8 ................................no connection  
Spacer  
Simply install the twisted pair wires by making the following  
connections.  
Lexan Shield  
Lock Washer  
460RC/F Modules  
Hex Nut  
G.703  
Model 460RC/F  
Instrument  
TX Output  
TX Output  
RJ-45 Pin No.  
Figure 4. Mounting a Model 460RC/F Module to the Rack  
4
5
5. Secure the 460RC/F card assembly by connecting a lock  
washer and hex nut on each screw.  
TX Shield  
3
RX Input  
RX Input  
1
2
4.3 CONNECTING THE 75 OHM BNC PORTS  
RX Shield  
6
The 75 Ohm BNC ports on the front of the 460R16 are labeled  
“TX” (Transmit Data Output) and “RX” (Receive Data Input). Simply  
connect the G.703 lines as follows*:  
*NOTE: The total allowable cable lengths are subject to the  
constraints of the ITU/CCITT G.703 recommendation. However,  
we recommend a total patch cable length, including coaxial and  
twisted pair cabling, of no more than 320 feet (200m).  
G.703 Network  
Model 460RC/F  
BNC Connector  
BNC Connectors  
TX  
RX  
RX  
TX  
*NOTE: The total allowable cable lengths are subject to the  
constraints of the ITU/CCITT G.703 recommendation. However,  
we recommend a total patch cable length, including coaxial and  
twisted pair cabling, of no more than 320 feet (200m).  
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APPENDIX A  
APPENDIX B  
PATTON ELECTRONICS MODEL 460RC  
SPECIFICATIONS  
PATTON ELECTRONICS MODEL 460RC  
FACTORY REPLACEMENT PARTS  
AND ACCESSORIES  
Transmission Line:  
CCITT G.703 (unstructured)  
2.048 Mbps  
Model #  
Description  
Data Rate:  
460R16 ......................Empty Balun Rack Panel  
460RC/F ....................G.703 Balun Rack Module  
05R16S460RC...........Lexan Shield  
056345.......................Star Washer  
75 Ohm Connection:  
Dual coax BNC connectors, male or  
female (RG 59 or 2002 coax)  
0562-06......................Spacer  
0561LW......................Lock Washer  
055.............................Hex Nut  
120 Ohm Connection:  
Power Supply:  
Shielded RJ-45 jack  
none required  
07M460RC.................Model 460RC User Manual  
Link-to-Data Isolation:  
Temperature Range:  
500 volts AC/DC  
32-122°F (0-50°C)  
Dimensions (w/o handles): 19" Wide x 3.5" High x 1.9” Deep  
(48.3 x 8.9 x 4.8 cm)  
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APPENDIX C  
APPENDIX D  
PATTON ELECTRONICS MODEL 460RC/F  
PIN ASSIGNMENTS  
PATTON ELECTRONICS MODEL 460RC/F  
BLOCK DIAGRAM  
120 OHM TWISTED PAIR INTERFACE  
RJ-45 Jack  
Pin No./Signal  
1 - Transmit Data Out  
2 - Transmit Data Out  
3 - Transmit Data Shield  
4 - Receive Data In  
5 - Receive Data In  
6 - Receive Data Shield  
7 - no connection  
8 - no connection  
© Copyright 1998  
Patton Electronics Company  
All Rights Reserved  
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