APPENDIX A
PATTON MODEL 2400 SPECIFICATIONS
DDS Type:
Dedicated
Transmission Format:
Synchronous, full duplex
Maximum Operating
Distance:
3.4 miles (5.5 km) over 26 AWG
(.4mm) twisted pair
DTE Interface:
RS-232 (DB-25 female or DB-25 male), or
V.35 (M/34 male)
DDS Line Interface:
RJ-48S jack
Standards:
AT&T 62310 compliant
DTE Rates:
56 and 64 kbps
Transmission Line:
4-wire
Applications:
DDS, point-to-point or multipoint; Clear
Channel, point-to-point; campus-area point-
to-point
Indicators:
LED indicators for TD, RD, CD, No Signal,
Error, Test Mode, and Power
Diagnostics:
V.54 compliant local and remote loopback
tests; V.52 compliant 511/511E BER test
Power Supply:
120 VAC, 60 Hz to 5VDC 200mA wall
mount transformer or UI 100-240VAC, 50 Hz
to 5 VDC, 2A wall mount transformer
Dimensions:
V.35 version - 4.9”L X 2.0”W X 0.9”H
(12.4cmL x 5.1cmW x 2.3cmH);
RS-232 version - 3.5”L x 2.1”W x 0.8”H
(9.0cmL x 5.3cmW x 2.0cmH)
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APPENDIX B
PATTON MODEL 2400 CABLE RECOMMENDATIONS
The following statements apply to the Model 2400 when used as a
short range modem over private twisted pair:
All Patton Electronics Company Short Range Modems (SRMs) 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
83nF/mi or 15.72 pF/ft.
.0163
Ω
/ft.
22 AWG
83nF/mi or 15.72 pF/ft.
.0326
Ω
/ft.
24 AWG
83nF/mi or 15.72 pF/ft.
.05165
Ω
/ft.
26 AWG
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 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 must be taken seriously.
Certain models are better suited for particular applications and
environments than others.
