Patton electronic user manual Appendix a Patton Model 1070 Specifications

APPENDIX A

PATTON MODEL 1070 SPECIFICATIONS

Transmission Format: Synchronous

Distances: See table (below)

Interface: RS-232 (CCITT V.24) DB-25 female

Transmission Line: 4-wire, unconditioned via RJ-11 or terminal blocks

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: Point-to-point or multi-point

Indicators: Tri-state indicators for Transmit Data, Receive Data, Request to Send and Carrier Detect

Diagnostics: Loop 3 and 4, local and remote analog loopback

Optical Isolation: 2500 V RMS (minimum)

Power Supply: Wall-mount, 10 - 12V AC, 200mA

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 twisted-pair cable with the following characteristics:

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)

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.

13 14