| 摘要 |
<p>A digital signal error detecting arrangement comprises generator means (1, 3, 5, 7, 9, 11) responsive to a section of a received test signal sequence of digits thereafter to generate itself successive further digits in the test signal; and measurement means (19, 27) for comparing the generated digits with received said further digits to thereby indicate the error ratio therebetween. The operation of the measurement means (19, 27) is inhibited until the intregrity of the generated digits is established. The integrity of the generated digits is established by comparing them with the received further digits. <IMAGE></p> |
