发明名称 |
Method and apparatus for testing analog-to-digital and digital-to-analog code converters |
摘要 |
An apparatus and method for testing for faults in an analog-to-digital (A/D) section and a digital-to-analog (D/A) section of a code converter in a digital time division, multiplex telecommunications system are disclosed. The A/D section is tested by connecting a digital test pattern via the switching network to the D/A section and monitoring for faults by comparing the resulting output to a reference value. The A/D section is tested by interconnecting the A/D section to be tested between a first previously tested D/A section and a second previously tested D/A section and then connecting the digital test pattern to the first D/A section while monitoring the output of the second D/A section for faults.
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申请公布号 |
US4266292(A) |
申请公布日期 |
1981.05.05 |
申请号 |
US19780950844 |
申请日期 |
1978.11.20 |
申请人 |
WESCOM SWITCHING, INC. |
发明人 |
REGAN, JOHN F.;PITRODA, SATYAN G.;MIN, BYUNG C. |
分类号 |
H03M1/00;H04J3/14;H04Q11/04;(IPC1-7):H04J3/14 |
主分类号 |
H03M1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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