| 摘要 |
The arrangement has a superposition receiver (11,12), a data decision device, a frequency acquisition circuit (8), a local oscillator laser, a feedback unit (4) for an OPLL loop and a window discriminator (3) between the output of the superposition receiver and an input of the feedback unit. A changeover device (5) feeds the feedback unit output or the frequency acquisition circuit output to the local oscillator laser (7) control input. |
