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E.2 physical description, E.3 general specifications – Comtech EF Data CDM-700 User Manual

Page 244

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CDM-700 High Speed Satellite Modem

Revision 5

Gigabit Ethernet Interface (GbEI) (CDI-70)

MN/CDM700.IOM

E–2

E.2 Physical

Description

The GBEI is implemented on a 3.95 x 7.022 inch (10.03 x 17.83 cm) PCB. Connectivity to the
CDM-700 will be implemented with a 96-pin DIN receptacle, and the LAN interface consists of
an RJ-45 connector with link status and link activity Light-Emitting Diode (LED) indicators (at
minimum).

E.3 General

Specifications

Table E-1. Interface Specifications

General Specifications

Data Framing

10/100/1000 Base-T Interface: RFC-894 “Ethernet”

Frame Size, Max

1632 bytes

Data Framing Format (WAN)

HDLC (Standard Single Channel)

Connectors

RJ-45 female, 100

Ω

Electrical Properties

Per IEEE 802.3ab

Packet Types

Burst or distributed IPV4

Signal Types

Serial data

Voltage Level

Per IEEE- 802.3ab

Packet Latency

50 ms maximum

Flow Control

None

Cable Length, Maximum

100 meters CAT 5 cable, patch cords and connecting hardware, per ISO/IEC
11801:1995 and ANSI/EIA/TIA-568-A (1995)

Hot Pluggable (cable)

Yes

Hot Pluggable (card)

NO

LEDs

Link status, link activity

Additional GBEI Statistics Summary specifications are provided in Chapter 6, in the Section
describing the front panel commands for (CONFIG:) Intfc1 (CDI-70 Gigabit Ethernet Interface).