
Total Access 3000 23-Inch Chassis Installation and Maintenance Practice
28
61181001L1-5E
SPECIFICATIONS
at the end of this document for complete product specifications.
Table 2. Total Access 3000 Specifications
Specification
Description
Main Chassis Mechanical
Height:
Width:
Depth:
6 inches
Mounts in standard 23-inch rack. Compatible
with 25-mm hole spacing or standard EIA hole
spacing
12 inches (includes all connectors, meets NEBS
standards)
Heat Baffle Mechanical
Height:
Width:
Depth:
4 inches
Mounts in 23-inch rack
12 inches (meets NEBS standards)
Input Power
Nominal:
Minimum:
Maximum:
–
48 VDC
–
42 VDC
–
56 VDC
Data I/O Connectors
Network:
Loop:
High-speed:
Four 64-pin amphenols for 56 DSX-1 circuits
Up to eight 64-pin amphenols for 224 2-wire
circuits
BNC supported modular connector for DS3 and
future high-speed interfaces
Power/Ground Connectors
–48 VDC and return connection for each of two power buses
Frame ground isolated from return to support single-point ground system; may be jumpered together.
Frame ground for all metal chassis elements
Administrative I/O Connectors
DB-25:
RS-485:
RJ-48:
Two ports for supporting TL1 and local craft
interface
Interbank communications
10Base-T Ethernet jack
Test Access
6-pin wire-wrap on backplane for logical DSX test access
6-pin wire-wrap on backplane for metallic loop testing (MLT)
Responds to 16-bit interface selection codes