User Manual

AirLink Pro T1/E1 Rack Mount Installer’s Guide
Specifications
Rev. B - 1/97
B-6
Airlink Pro E1 Interface General Specifications
The E1 interface in the AirLink E1 performs according to the specifications in
the ITU-T Fascicle III.4 Recommendation G.703, Section 6.
Transmission Line Rate 2.048 Mbps ± 200 bps
Line Coding High Density Bipolar 3 (HDB3) or
Alternate Mark Inversion (AMI)
Impedance 120 Ω ±5% (balanced)
75 Ω ±5% (unbalanced)
E1 Interface Output Specifications
Pulse Amplitude 3.0 volts ±10% (balanced)
2.3 volts ±10% (unbalanced)
Pulse Width 244 nanoseconds
Pulse Shape An isolated pulse shall fit the template shown in
Recommendation G.703, Figure 15.
Pulse Imbalance The ratio of the amplitude and pulse width of the positive
and negative pulse shall not exceed ±5%.
Output Jitter Generation Refer to Recommendation G.823, Figure 1 and Table 1.
The maximum output jitter shall not exceed the following
limits:
1.5 U.I. in a bandwidth from 20 Hz to 100 kHz.
0.2 U.I. in a bandwidth from 18 kHz to 100 kHz.