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Comtech EF Data SMS-451 User Manual

Page 16

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SMS-451 Sateliite Switch

Revision 0

Introduction

MN/SMS451.IOM

1–2

The switch contains:

• Circuitry for the data

• IF

switching

• Remote and local status reporting

• Remote and local control


A 50

system consists of the following assemblies:

Switch Top Assembly

AS/1781-1

1:1 Switch Modem PCB

AS/1760-1

Chassis Assembly

AS/1780

Front Panel Assembly

AS/1090

Power Supply

PS/AC40W03P02

Cable Assembly (75

)

CA/1798B

Cable Assembly (75

)

CA/1799B

Cable Assembly, DC Power

CA/1772B


A 75

system consists of the following assemblies:

Switch Top Assembly

AS/1781-2

1:1 Switch Modem PCB

AS/1760-2

Chassis Assembly

AS/1780

Front Panel Assembly

AS/1090

Power Supply

PS/AC40W03P02

Cable Assembly (50

)

CA/1800B

Cable Assembly (75

)

CA/1799B

Cable Assembly (75

)

CA/1798B

Cable Assembly, DC Power

CA/1772B


Additional versions of the SMS-451 also support the SDM-2020 Modulator and
demodulator:

• SDM-2020 with G.703 Interface
• SDM-2020 with ASI Interface

IMPORTANT

The 70/140 MHZ and L-Band versions of the SMS-451 are available to
support the SDM-2020 Demodulator. The TX IF of the SMS-451 is
alaways 70/140 MHz.