Appendix B - Cable Recommendations; Appendix C - Factory Replacement Parts - Patton electronics 2085RC User Manual

Rs-232 to rs-485 converter: dual port rack mount card
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APPENDIX B
PATTON ELECTRONICS MODEL 2085RC
CABLE RECOMMENDATIONS
The Patton Model 2085RC operates at frequencies of 115kHz or
less and has been performance tested by Patton technicians using
twisted-pair cable with the following characteristics:
Wire Gauge
Capacitance
19 AWG
83nf/mi or 15.72 pf/ft.
22 AWG
83nf/mi or 15.72 pf/ft.
24 AWG
83nf/mi or 15.72 pf/ft.
26 AWG
83nf/mi or 15.72 pf/ft.
Using or simulating cable with the above characteristics, the follow-
ing data rate/distance results were obtained by Patton during bench
tests:
MODEL 2085RC Distance Table- Miles (Km)
Data Rate
19 AWG 22 AWG 24 AWG 26 AWG
(kbps)
(.9mm)
115.2
3.5
(5.6)
38.4
5.0
( 8.0)
9.6
7.1
(11.4)
1.2
9.0
(14.5)
To gain optimum performance from the Model 2085RC, 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 speci-
fications may cause a reduction in maximum distance obtainable.
Functionality should not be affected.
• Many environmental factors can affect the maximum distances
obtainable at a particular site. Use the above data rate/distance
table as a general guideline only.
Resistance
.0163 Ohms/ft.
.0326 Ohms/ft.
.05165 Ohms/ft.
.08235 Ohms/ft.
Wire Gauge
(.6mm) (.5mm)
(.4mm)
2.6
1.4
0.9
(4.2)
(2.2)
(1.4)
2.9
2.2
1.5
(4.7)
(3.5)
(2.4)
4.6
3.5
2.8
(7.4)
(5.6)
(4.5)
6.5
5.0
3.9
(10.5)
(8.0)
(6.3)
21
APPENDIX C
PATTON ELECTRONICS MODEL 2085RC
FACTORY REPLACEMENT PARTS
The Patton Model 2085RC rack system features interchangeable
rear half cards, power cords/fuses for international various operating
environments and other user-replaceable parts. Model numbers and
descriptions for these parts are listed below:
Patton Model #
1000RPEM..........................120/240V Rear Power Entry Module
1000RPSM-2.......................120/240V Front Power Supply Module
1000RPEM-DC ...................DC Rear Power Entry Module
1000RPSM-48A ..................48V Front Power Supply Module
1000RPEM-V ......................120/240V CE Compliant Rear Power
Entry Module
1000RPEM-V ......................120/240V CE Compliant Rear Power
Supply Entry Module
0805US ...............................American Power Cord
0805EUR.............................European Power Cord CEE 7
0805UK ...............................United Kingdom Power Cord
0805AUS .............................Australia/New Zealand Power Cord
0805DEN.............................Denmark Power Cord
0805FR ...............................France/Belgium Power Cord
0805IN.................................India Power Cord
0805IS.................................Israel Power Cord
0805JAP..............................Japan Power Cord
0805SW ..............................Switzerland Power Cord
0516FPB1 ...........................Single Width Blank Front Panel
0516FPB4 ...........................4-Wide Blank Front Panel
0516RPB1...........................Single Width Blank Rear Panel
0516RPB4...........................4-Wide Blank Rear Panel
Description
22

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