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APPENDIX B
MODEL 305X SERIES CABLE RECOMMENDATIONS
The Patton Model Series operates at frequencies of 160 kHz or less
and has been performance tested by Patton technicians using twisted-
pair cable with the following characteristics:
W
ire Gauge Capacitance Resistance
19 AWG(.9mm) 83nF/mi or 15.72 pF/ft. .0163 Ohms/ft.
22 AWG(.6m) 83nF/mi or 15.72 pF/ft. .0326 Ohms/ft.
24 AWG(.5mm) 83nF/mi or 15.72 pF/ft. .05165 Ohms/ft.
26 AWG(.4mm) 83nF/mi or 15.72 pF/ft. .08347 Ohms/ft.
To gain optimum performance from the Model 305X Series, please
keep the following guidelines in mind:
• Always use twisted pair wire—this is not an option.
• Use twisted pair wire with a capacitance of 20pF/ft or less.
• Avoid twisted pair wire thinner than 26 AWG (i.e. avoid higher
AWG numbers than 26).
• Use of twisted pair with a resistance greater than the above
specifications may cause a reduction in maximum distance
obtainable. Functionality should not be affected.
APPENDIX A
PATTON MODEL 305X SERIES SPECIFICATIONS
Transmission Lines: Main channel and RS-422 sub-channels,19
to 26 AWG twisted pair; RS-232 sub-
channels, flat silver cable
Range: 6000 feet (1800m) over twisted pair 24 AWG
between multiplexers; 1000 feet (304m) on
RS-422 sub-channels; 50 feet (15m) on
RS-232 sub-channels
Interfaces: Asynchronous RS-232, ITU/CCITT
Data Rates: 0 - 19.2 kbps on sub-channels
Indicators: Transmit Data, Receive Data, Link, Local
Loopback, Line Test
Test Modes: Local loopback, Line Test
Connectors: RJ-45 female on main and sub-channels
Power Supply: 9-12 Volts AC
Temperature
Range: 0-60
0
C (32-140
0
F)
Altitude: 0-15,000 feet (0-4572 m)
Humidity: 5 to 95% non-condensing
Dimensions: 8.5" W x 3.5”L x 1.5”H (21.0 x 8.9. x 3.8 cm)
Weight: Multiplexer, 0.65 lbs; Power supply, 0.5 lbs
Certifications: Emissions: FCC part 15 Class A,
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