| 摘要 |
The phase detector generates a signal proportional to the difference between the links and the exchange oscillator. This signal is differentiated. The differentiated values are compared with a limiting value, positive or negative, in a respective comparator. If the limit is exceeded, a respective contact is closed to connect a compensation voltage to an addition circuit which receives also the differentiated signal. The signals from the appts. of each transit exchange are fed to a summing circuit, the output of which is fed to an integrator with memory and an adding circuit. |
