DS3 Standby I/O Card - Model No. EXSDIO1200

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The DS3 Standby I/O card is used in conjunction with the DS3 Redundant I/O card to deliver N+1 redundancy. To support redundancy, you must use the supplied DS3 cable assemblies. These cables are supplied with the DS3 I/O card. See the DS3 Cable Assembly, Hardware Product Description.

Always use the supplied DS3 cable assemblies when connecting the DS3 I/O card and a DS3 Standby I/O card for redundancy or when connecting a DS3 I/O card directly to the network. Using other cables may damage the connectors on the DS3 I/O and Standby I/O cards and cause a failure or intermittent operation.

When interfacing the DS3 I/O and Standby I/O cards with any electrical equipment with the DS3 cable assembly, proper wiring and grounding procedures must be followed. If not, ground loops mayn result which are dangerous and can result in physical harm as well as possible signal interference. See Chapter 4, Card Installation in the CSP Installation and Maintenance Guide.

The DS3 Standby I/O card resides in the rear card slots of a CSP 2090, CSP 2110 or CSP 2040 chassis. The DS3 Standby I/O card must reside in a slot numbered one greater than the Primary DS3 I/O card. For example if the Primary DS3 I/O card is in slot six, the standby DS3 I/O card must be in slot seven.

The part number, serial number, model number, and revision are located on the back of the PC board.

The DS3 Standby I/O card is designed to the following electrical, physical and environmental specifications.

The DS3 Standby I/O card complies with all relevant regulations from the following standards organizations and governing bodies.

Electrical	Specification
Supply Voltage, Vcc	5.00V
Supply Current, Vcc @ 5.0V	0.74A (typical)

Physical	Specification
Height	318.5 mm (12.54 in.)
Depth	105.2 mm (4.14 in.)
Width	19.7 mm (0.775 in.)

Environmental	Specification
Temperature - Storage	-40~C to 70~C (-40~F to 158~F)
Temperature - Operation	0~C to 50~C (32~F to 122~F)
Temperature Shock - Storage	-40~C to 70~C to -40~C (-40~F to 158~F to -40~F) @ 5~C/min.
Temperature Shock - Operation	0~C to 50~C (32~F to 122~F) @ 10~C/min.
Humidity - Operating	5% to 85%
Altitude	Up to 4000 m (13,123 ft.)

Country/Standards Organization	Regulations
United States	FCC Part 15 CSA 60950-1-3 T1.102 Compliant
Canada	ICES 003 CSA 60950-1-3
NEBS	Level 3
European Union	CE Mark G.703 Compliant

Product	Model No.
DS3 Card	EXS-DS3-1000
DS3 I/O Card	EXS-DS3-1100
DS3 Cable Assy, 75 Ohm BNC Y (Part No. 64-0124-00)	Not Applicable

The table below describes the LEDs as shown in the front view of the DS3 Standby I/O Card.

Notation that describes line card redundancy, where N is the number of installed line cards of a single card type and 1 is an additional line card of that type designated as a standby card. For example, if you have three T-ONE cards and one additional standby T-ONE card installed, the system provides redundancy by activating the standby card if any of the three active T-ONE cards fail.

See Converged Services Administrator.

Digital communications link - voice, data, and video at a 1.544 Mbps rate (24 64 Kbps channels)

An I/O card that supports redundancy but has no external connections. A Standby I/O card sits behind whichever line card is originally designated as "standby." Compare to "Redundant I/O card" and "Standard I/O card."

LED	Color/Status	Description
IN Service	Green	Indicates normal operation
IN Service	Red	Indicates switchover (fault condition)
Board Status	Green	Indicates normal operation