Cabletron Systems BRIM-A6 - Manual (Page 38)

APIM-67 Specifications
BRIM-A6 User’s Guide Page A-3
A.5 APIM-67 SPECIFICATIONS
Physical Interface: DS3
Media Type: 75 Ohm Coaxial Cable
Data Rate: 45 Mbps
Connector Type: BNC
Typical Link Distance: 136 Meters
The APIM-67 conforms to the electrical characteristics specified by
ANSI T1.404-1989 Carrier-to-Customer Installation-DS3 Metallic
Interface Specification, section 5.12 Grounding Arrangements. In
accordance with this specification, each channel (Transmit and
Receive) must be grounded at one end.
Cabletron Systems ships the APIM-67 with the following default
jumper settings:
• Receive channel jumper - grounded
• Transmit channel jumper - not grounded
Figure A-2 shows the location and default setting of each jumper. Refer
to Figure A-2 if you need to change the jumper settings to properly
connect the APIM-67 to another DS3 device.
Figure A-2 The APIM-67 Default Jumper Settings
!
C AUT IO N
The APIM-67 does not use Cell Payload Scrambling.
Scrambling must be disabled on any DS3 device connected to
the APIM-67.
RECEIVE CHANNEL JUMPER (GROUNDED)
TRANSMIT CHANNEL JUMPER (NOT GROUNDED)
142910
book Page 3 Thursday, April 18, 1996 2:18 PM