| APPENDIX A |
| PATTON MODEL 2702 |
| SPECIFICATIONS |
Network Data Rate: | 2.048 Mbps + 50ppm |
Network Connector: | |
Nominal Impedance: | 120 ohm (75 ohm available when using |
| Patton Model 460 Balun) |
DTE/DCE Interface: | V.35 (DCE Orientation) on Male M/34 |
Line Coding: | Selectable AMI or HDB3 |
Line Framing: | G.703 (Unframed) |
Clocking: | Network, Internal, External (from DTE) |
DTE Data Rates: | 2.048 Mbps |
Diagnostics: | V.54 Loopback & Local Loopback |
Indicators: | Power, Transmit Data, Receive Data, |
| Alarm, Loss of Tx Clock, Test Mode, |
| Error |
Configuration: | |
Power: | Regulated 5VDC + 5%, 300 mA mini- |
| mum |
Humidity: | Up to 90% |
Temperature: | 0 to 50o C |
Dimensions: | 4.8”L x 2.0”W x 0.88”H (12.2 x 5.1 x 2.2 |
| cm) |
APPENDIX B
PATTON MODEL 2702
CABLE RECOMMENDATIONS
The Patton Model 2702 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 2702 , 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 AWG numbers higher than 26)
•Use of twisted pair with a resistance greater than the above specifications may cause a reduction in maximum distance obtain- able. Functionality should not be affected.
•Many environmental factors can affect the maximum distance obtainable at a particular site. Use the above data rate/distance table as a general guideline only.
15 | 16 |