ZyXEL Communications Multi-service Access Platform MSAP2000 - Manual (Page 234)

11. System Parameter Specification
MSAP2000 Technical Manual V3.0 11-5
Pulse Shape
Complies with ITU-T G.703 recommended standards.
Output signals fall with the range of normal pulse shapes, as
shown in the following diagram:
Peak Voltage value of Mark “1” 3.0V
Peak Voltage Value of Space “0” 0
± 0.3V
Nominal Signal period cycle 488 ns
Nominal Signal Pulse width 244 ns
Nominal Signal duty cycle 50%
Amplitude ratio of positive &
negative pulses, at mid-pulse
range 0.95~1.05
Pulse width ratio of positive and
negative pulses, at mid-pulse
range 0.95~1.05