Atec Agilent-J2300E - Manual (Page 72)

72
J2 (6.312 Mb/s) J2911A
General
This interface is a plug-in module (J2911A) suitable for plugging into the
J2300C/D/E Agilent Advisor mainframe and the J2900A High Speed undercradle.
It handles ATM for the Japanese J2 standard.
Common to Input and Output:
Connectors:
Unbalanced 75 Ohm BNC female
Electrical:
ITU-T G.703
Line Code:
B8ZS
Framing:
ITU-T G.704 framing
Full frame: Timeslots 1 - 96 (6.312 Mb/s)
Fractional frame:
Timeslots 1 - 72 (4.608 Mb/s)
Timeslots 1 - 48, 49 - 96 (3.073 Mb/s)
Timeslots 1 - 24, 25 - 48, 49 - 72, 73 - 96 (1.536 Mb/s)
Cell Mapping:
Direct (ITU-T G.804)
Cell Scrambling conforms to ITU-T I.432.1 (x 43 + 1) and may be turned on or off
Input:
Two ports
Levels:
0.5V to 2.0V (ITU-T G.703)
Monimodes:
Terminated, 75 Ohms unbalanced
Bridged (High Impedance, >1 kOhm)
Physical Layer Alarms and Statistics:
Loss of Signal (LOS)
Loss of Frame (LOF)
Loss of Cell Delineation (LCD)
Alarm Indication Signal (AIS)
Remote Alarm Indication (RAI)
Payload AIS
Line code violations
CRC-5 errors
Capture buffer size: 28 Mbyte (approximately 400,000 cells)
Capture buffer timestamp resolution: 100ns
Capture rate: full line rate
Output:
Two ports, 75 Ohm unbalanced
Levels:
Clocking:
Recovered (loop), Internal and External (using other receiver input)
Internal clock rate accuracy:
+/- 30 ppm
Traffic Generation from cell table
Alarm Generation:
RAI, AIS
ATM and WAN Interface
Specifications
(continued)
peak peak
peak peak
0.2V , to +/- 0.3V (ITU-T G.703)