APPENDIX A
PATTON MODEL 1070 SPECIFICATIONS
Transmission Format: Synchronous
Distances: See table (below)
Interface:
Transmission Line:
Data Rates: 1.2, 2.4, 4.8, 7.2, 9.6, 14.4 and 19.2 Kbps
Clocking: Internal or external
Controls: Carrier constantly "ON" or controlled by RTS; RTS/CTS delay set to 0, 8 or 53 mS
Applications:
Indicators:
Diagnostics: Loop 3 and 4, local and remote analog loopback
Optical Isolation: 2500 V RMS (minimum)
Power Supply:
Dimensions: 4.127"W x 1.52"H x 5.0"L
APPENDIX B
PATTON MODEL 1070 CABLE RECOMMENDATIONS
The Patton Model 1070 is designed and tested to communicate over
Wire Gauge | Capacitance | Resistance |
19 AWG/.9mm | 83nF/mi or 15.72 pF/ft. | .0163Ω /ft. |
22 AWG/.6mm | 83nF/mi or 15.72 pF/ft. | .0326Ω /ft. |
24 AWG/.4mm | 83nF/mi or 15.72 pF/ft. | .05165Ω /ft. |
Using the above characteristics as a baseline, we estimate the distance limitations for the Model 1070 to be as follows.
Model 1070 Distance Table - Miles (Km)
| Data |
|
| Wire Gauge |
| |
| Rate | 19 (.9mm) | 22 (.6mm) | 24 (.4mm) | ||
| 19,200 | 2.5 | (4.0) |
| 2.1 (3.4) | 1.3 (2.1) |
9,600 | 3.7 | (6.0) |
| 2.3 (3.7) | 1.7 (2.7) | |
4,800 | 4.9 | (7.9) |
| 4.9 (7.9) | 2.5 (4.0) | |
2,400 | 8.2 (13.2) |
| 5.8 (9.3) | 4.6 (7.4) | ||
1,200 | 10.2 | (16.4) |
| 8.3 (13.4) | 6.8 (10.9) | |
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To reduce the potential of difficulties in the field, we recommend that the cable used to connect the Model 1070s have a capacitance of no greater than 20pF/ft., and that the wire be no thinner than 26 AWG. The Model 1070 is designed to withstand normal environmental noise and conditions. However, other environmental factors too numerous to discuss may affect proper operation. The distance table above should be used as a general guideline only.
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