Technical data

The shape of the curve is similar for all data rates; it always consists of
areas 1 and 2.
The curves for different data rates differ in
- The position of the "dog-leg" separating areas 1 and 2.
and
- The angle of the curve in area 2.
The switch-off times (in seconds) for the different data rates can be
calculated based on the following table (BTU=bit time units):
Data rate
Switch-off time in area 1 Switch-off time in area 2
9.6 Kbps
TTR
limit
= 317 BTU
TTR< 317 BTU:
>T
so
= T
somin
= 0.8 s
TTR > 317 BTU:
>T
so
= 0.0025xTTR(s)
19.2 Kbps
TTR
limit
= 590 BTU
TTR< 590 BTU:
>T
so
=T
somin
= 0.8 s
TTR> 590 BTU:
>T
so
= 0.00125xTTR(s)
93.75 Kbps
TTR< 2883 BTU:
TTR> 2883 BTU:
>T =T
somin
= 0.8 s
so
>T
so
= 0.000256xTTR(s)
187.5Kbps
TTR
limit
= 4125 BTU
500 Kbps
1.5 Kbps
TTR< 5766 BTU:
>T
so
=T
somin
= 0.8 s
TTR> 5766 BTU:
>T
so
= 0.000128xTTR(s)
TTR
limit
= 8250 BTU
TTR< 15375 BTU:
>T
so
=T
somin
= 0.8 s
TTR> 15375 BTU:
>T
so
= 0,.0005xTTR(s)
TTR
limit
= 15375 BTU
TTR< 46125 BTU:
>T
so
=T
somin
= 0.8 s
TTR> 46125 BTU:
>T
so
= 0,.0002xTTR(s)
TTR
limit
= 46125 BTU
Table 17.15 Switch-off times (in seconds) for the Different Data Rates
B8976060/02 Appendix
17 - 31 Volume 1