Harris Corporation Constellation™
Introduction 1-5
INTRODUCTION
Rack Size
The Constellation radio can be installed in a standard 19-inch equipment rack.
A fully protected terminal configuration requires 14 RMS (Rack-Mounting
Spaces). A repeater can be mounted on a single rack. Refer to the Constellation
SAI manual for more information.
Shelf Configurations
The following shelf configurations are available for the Constellation Radio. See
Figure 1-2 to Figure 1-7.
• Nonprotected Terminal
• Nonprotected Tx/Space Diversity (SD) Rx Terminal
• Monitored Hot Standby (MHSB) Terminal
• Frequency Diversity Tx and Rx Terminal,
MHSB Tx with SD Rx Terminal
• MHSB Repeater
• MHSB 155/3xDS3 back-to-back terminal
Figure 1-2: Narrow/medium capacity, nonprotected
terminal
M12 7
M12 6
8 x DS1 28 x DS1
TRANSMITTER A1
RECEIVER A1
SERVICE CHANNEL*
SPU CONTROLLER
HIGH LEVEL MUX 1
MODEM A1
ACU
FUSE PANEL
FAN ASSEMBLY
POWER SUPPLY A1
M12 2
M12 1
M12 Unit Requirements
M12 5
M12 4
M12 3
M12 2
M12 1
M12 4
M12 3
M12 2
M12 1
16 x DS1
M12 Units
not used
for DS3
configura-
tion
M12 1
4 x DS1
KEYPAD, HANDSET, AND
DS1 ACCESS
*Service Channel is optional.