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APPENDIX B
PATTON MODEL 1050 CABLE RECOMMENDATIONS
All Patton Electronics Company Short Range Modems are tested to
the distances published in our Catalogs and Specification Sheets on
twisted-pair cable with the following characteristics:
Wire Gauge Capacitance Resistance
19 AWG(.9mm) 83nF/mi or 15.72 pF/ft. .0163
Ω
/ft.
22 AWG(.6mm) 83nF/mi or 15.72 pF/ft. .0326
Ω
/ft.
24 AWG(.5mm) 83nF/mi or 15.72 pF/ft. .05165
Ω
/ft.
26 AWG(.4mm) 83nF/mi or 15.72 pF/ft. .08235
Ω
/ft.
We fully expect that the Short Range Modems will operate on lines
with specifications different from those tested, but to reduce the
potential difficulties in the field, one should ensure that the cable being
used has similar or better characteristics (lower capacitance or lower
resistance).
Wire with capacitance of 20pF/ft. or less is suitable for all our Short
Range Modems however, distances may vary from those published in
our catalog. Resistance will also affect distance but not functionality.
Wire should be 26 AWG (.4mm) (or larger (smaller AWG#).
Patton products are designed to withstand normal environmental
noise and conditions however, other environmental factors too
numerous to discuss in this format may affect proper operation of the
SRM’s.
Selection of the proper SRM for an application is critical to
maintaining Customer Satisfaction and should be taken seriously.
Certain models are better suited for particular applications and
environments than others.
APPENDIX C
PATTON MODEL 1050 INTERFACE PIN ASSIGNMENT
RS-232 FEMALE, D-SUB 25 CONNECTOR
(DCE ORIENTATION)
1- (FG) Frame Ground
2- (TD) Transmit Data
To 1050
3- (RD) Receive Data From 1050
4- (RTS) Request to Send To 1050
5- (CTS) Clear to Send From 1050
6- (DSR) Data Set Ready From 1050
7- (SG) Signal Ground
8- (DCD) Data Carrier Detect
From 1050
DIRECTION STANDARD RS-232C/V.24 “DCE” SETTING DIRECTION
1- (FG) Frame Ground
2- (TD) Transmit Data
From 1050
3- (RD) Receive Data To 1050
4- (RTS) Request to Send From 1050
7- (SG) Signal Ground
8- (DCD) Data Carrier Detect
To 1050
From 1050 Data Term. Ready (DTR) - 20
DIRECTION STANDARD RS-232C/V.24 “DTE” SETTING DIRECTION
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