Specifications

December 2008 Page 1–9
Chapter 1. Product Description
1
Nominal Battery Permissible Voltage Supply Power in Watts at
Voltage Variation Nominal Voltage
(Depends on configuration)
48/60Vdc 38-82Vdc 20-50
24Vdc 18-30Vdc 20-50
110/125Vdc/Vac 88-145Vdc 20-50
220/250Vdc/Vac 176-300Vdc 20-50
Table 1–3. System Power Requirements
T1 or E1 System Rate = 1.544 Mbps or 2.048 Mbps
Number of Channels = 24/link or 30/link
Chassis Main chassis can have up to 12 channel modules (1 slot each)
One expansion chassis can provide up to 12 additional channel modules
Timing Internal clock or receive synchronization
Accuracy = 25 ppm (Better than AT&T specification)
Multiplexing Time division, byte interleaved per AT&T Publication 60110
Drop and insert operation
Alarms Major alarm
Minor alarm
Form A contacts (fail-safe)
Table 1–2. System Specifications
1.23 System Specifications
The following tables show the standard FOCUS system and environmental specifications and the system
power requirements.