American Telecom AM64/128A - Manual (Page 39)

AM64/128A User Manual Specifications
39
GENERAL SPECIFICATIONS
Transmission system uses DSP techniques involving echo cancellation and adaptive decision feedback
equalisation. The system is intended for use on 2-wire unconditioned copper wire (BT EPS-9 type circuits).
Power output selectable 0dBm or 10dBm.
Line code is AMI with embedded synch pattern for timing control.
Line rates 71.1kbit/s (high) or 142.2kbit/s (double).
Line attenuation range up to 50dB at 10dBm output level and high line rate. This is equivalent to a noise
free range of 5km on 0.4mm diameter copper wire.
Line attenuation range up to 40dB at 10dBm output level and double line rate. This is equivalent to a noise
free range of 4km on 0.4mm diameter copper wire.
High line rate user data rates: 2400, 4800, 9600, 16000, 19200, 32000, 48000, 56000, 64000 bit/s.
Double line rate user data rates: 128000 bit/s.
Synchronous working at all user rates, asynchronous working at 2400,4800,9600 and 19200 bit/s.
Byte timing is available at 64kbit/s with the X.21 interface.
X50 divisions 2 and 3 are supported at 48kbit/s.
User interfaces: X.21 V.11
X.21 bis V.24 / V.28
X.21 bis V.35
X.21 bis V.36
X.21 bis RS-530
G.703 (120ž, 64kbps) Codirectional.
Test facilities: local loop, loopback, remote loop, comms channel loop,
transmit binary 0, transmit binary 1, transmit CNR,
self test, lamp test, data channel error test, in service error test.
Enviromental: Temperature range -10 to + 60 deg C
Humidity range 5 % to 85 %
Air pressure range 70 to 106 kPa
Power supply: The unit has a user accessible changeover switch for operation at either:
240V ac +6% to -10%, 50/60Hz or 110V ac +6% to -10%, 50/60Hz.
Supply requirements: 5W Max
Dimensions: 274mm(L) x 251mm(W) x 55mm(H)
Weight: 2.45kg (excluding leads)