Patton electronic 2450 User Manual

Page 8

APPENDIX A

PATTON MODEL 2450 SPECIFICATIONS

DDS Type:

Dedicated

Transmission Format:

Synchronous, full duplex

Maximum Operating
Distance:

18000 feet (3.4 miles) over 26 AWG twisted
pair

DTE Interface:

RS-232 (DB-25 female), RS-422/530 (DB-
25 female), V.35 (M/34 female or DB-25
female)

DDS Line Interface:

RJ-48S jack

Standards:

AT&T 62310 compliant

DDS Line Rates:

56 and 64 Kbps

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 and Test Mode

Diagnostics:

V.54 compliant local and remote loopback
tests; V.52 compliant 511/511E BER test

Power Supply:

120 VAC, 60 Hz or 230 VAC, 50 Hz to 10
VAC, 1A wall mount transformer

Dimensions:

(RS-232 version) 1.65”H x 4.18”W x 3.55”D;
(V.35 version w/ screws) 1.65”H x 4.18”W x
3.96”D

APPENDIX B

CABLE RECOMMENDATIONS

The following statements apply to the Model 2450 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. Variations in wire 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 should be taken seriously.
Certain models are better suited for particular applications and
environments than others.