APPENDIX A
SPECIFICATIONS
DDS Type: Dedicated
Transmission Format: Asynchronous, synchronous
Interface:
Standards: AT&T 62310 compliant
DDS Line Rates: 2.4, 4.8, 9.6, 19.2, 56 and 64 kbps
DTE Rates: 2.4, 4.8, 9.6, 19.2, 38.4, 56, and 64 kbps; 57.6 kbps, async, 2 stop bits
Control Port: Configuration and diagnostics
Transmission Line: 4-wire
Applications: DDS
Indicators: LED indicators for TD, RD, CTS, CD, DTR, No Signal, Out-
Diagnostics: V.54 compliant local and remote loopback tests; V.52 compliant 511/511E BER test, TELCO CSU and DSU loops
Connectors:
Power Supply: 115V or 230V AC
Dimensions: 7.3” x 6.6” x 1.6”
Model 2500 Series Distance Table (miles)
| Data |
| Wire Gauge |
|
| |
| Rate | 22 |
| 24 | 26 |
|
| 64 Kbps | 7.1 |
| 4.9 | 3.4 |
|
| 56 Kbps | 7.6 |
| 5.2 | 3.6 |
|
| 19.2 Kbps | 8.7 |
| 6.2 | 4.5 |
|
| 9600 bps | 10.4 |
| 7.7 | 5.8 |
|
| 4800 bps | 13.7 |
| 10.6 | 9.7 |
|
| 2400 bps | 15.1 |
| 14.2 | 9.1 |
|
APPENDIX B
CABLE RECOMMENDATIONS
The Patton Model 2500 Series operates at frequencies of 20kHz or less and has been performance tested by Patton technicians using
Wire Gauge | Capacitance | Resistance |
19 AWG | 83nf/mi or 15.72 pf/ft. | .0163 Ohms/ft. |
22 AWG | 83nf/mi or 15.72 pf/ft. | .0326 Ohms/ft. |
24 AWG | 83nf/mi or 15.72 pf/ft. | .05165 Ohms/ft. |
To gain optimum performance from the Model 2500 Series, please keep the following guidelines in mind:
•Always use twisted pair
•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.
•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.
33 | 34 |
