Patton electronic Model 2711 - Manual (Page 11)

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APPENDIX A
PATTON MODEL 2711 SERIES SPECIFICATIONS
WAN Speed: 1.544 Mbps
WAN Connection: RJ-48C
Nominal Impedance: 100 Ohms
DTE Interface: Integral V.35, M/34 male or RS-422/RS-
530 (DB-25 Male)
Line Coding: AMI/B8ZS
Line Framing D4/ESF
Receive LBO: Automatic
Transmit LBO: Selectable - 0, 7.5,
15, or 22.5 dB
Clock Options: Internal, external and network clock
Diagnostics: Responds to CO initiated D4 loopup
and loopdown codes, ESF line loop
and payload loop FDL messages,
Universal Loopback De-activate mes-
sage.
Standards: AT&T TR62411, ANSI T1.403, TR54016
Power Supply: 120VAC, 60 Hz to +5VDC 300mA wall-
mount transformer or UI 100-240VAC,
50 Hz to +5 VDC, 3A wall-mount trans-
former
Dimensions: 3.5”L x 2.1”W x 0.78”H (9.0 x 5.3 x 1.9
cm)
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APPENDIX B
PATTON MODEL 2711 SERIES CABLE RECOMMENDATIONS
The Patton Model 2711 Series operates at frequencies of 20kHz or
less and 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 2711 Series, 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 higher
AWG numbers 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 distances
obtainable at a particular site.