Patton electronic 2702 G.703 user manual Specifications, Patton Model Cable Recommendations

	APPENDIX A
	PATTON MODEL 2702
	SPECIFICATIONS
Network Data Rate:	2.048 Mbps + 50ppm
Network Connector:	RJ-48C
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:	8-Position DIP Switch
Power:	Regulated 5VDC + 5%, 300 mA mini-
	mum
Humidity:	Up to 90% non-condensing
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 twisted-pair cable with the following characteristics:

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 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 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.

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