Patton electronic 1070RC - Manual (Page 21)

APPENDIX A.
MODEL 1070RC SPECIFICATIONS
Transmission Format: Synchronous
External Interface: RS-232C/CCITT V.24 connection via DB-25
Female; EIA/TIA-561 connection via RJ-45 (10 wire); twisted pair
connection via RJ-11 or RJ-45 (8 wire).
Internal Interface: Connection to Model 1000R16 rack chassis via 50
pin male card edge.
Transmission Line: 4-wire, unconditioned twisted pair, 19-26 AWG,
20pf/ft or better.
Data Rates: 1.2, 2.4, 4.8, 7.2, 9.6, 14.4, and 19.2 Kbps, switch
selected.
Clocking: Internal or External
Controls: Carrier constantly "ON" or "controlled by RTS." RTS/CTS
delay set to 0, 7 or 53 ms.
Applications: Point-to-point or Multi-point
Indicators: Bi-level LED indicators (two each) for Transmit Data,
Receive Data, Control In and Control Out; bi-level indicators (one each)
for Power and Test
Diagnostics: Local and remote analog loopback, activated by front
panel push button
Optical Isolation: 150 V RMS (minimum)
Surge Protection: Silicon Avalanche Diodes, 600 watts RMS power
dissipation @ 1 ms, with response time of less than 1 ps.
Temperature: 0-50 0 C / 32-122 0 F
Humidity: 0-95%, non-condensing
Dimensions: 0.95"W x 3.1"H x 5.4"L
19 20
APPENDIX B.
MODEL 1070RC CABLE RECOMMENDATIONS
The Patton Model 1070RC operates at frequencies of 20kHz or less
and has been performance tested by Patton technicians using twisted-
pair cable with the following characteristics:
Wire Gauge Capacitance Resistance
19 AWG/.9mm 83nf/mi or 15.72 pf/ft. .0163 Ohms/ft.
22 AWG/.6mm 83nf/mi or 15.72 pf/ft. .0326 Ohms/ft.
24 AWG/.5mm 83nf/mi or 15.72 pf/ft. .05165 Ohms/ft.
Using or simulating cable with the above characteristics, the
following data rate/distance results were obtained by Patton during
bench tests:
Data Rate (Bps) Gauge (AWG) / Distance (Mi)
19 22 24
19,200 2.5 2.1 1.3
9,600 3.7 2.3 1.7
4,800 4.9 4.9 2.5
2,400 8.2 5.8 4.6
1,200 10.0 8.3 6.8
To gain optimum performance from the 1070RC, 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.
• Environmental factors too numerous to mention can affect the
maximum distances obtainable at a particular site. Use the above
data rate/distance table as a
general guideline only.