Browse Prior Art Database

HDD Tester Low Cost Electronics

IP.com Disclosure Number: IPCOM000192867D
Publication Date: 2010-Feb-05
Document File: 2 page(s) / 68K

Publishing Venue

The IP.com Prior Art Database

Abstract

The test equipment for hard disk drives (HDD), the CPU printed circuit board for an HDD test is prepared for every slot. Moreover, there is also equipment which tests several sets of HDD by the CPU printed circuit board of one board for a cost saving. In this invention, by improving test equipment and the transmission system of the test program between HDD, the number of CPUs was cut down sharply and it made it possible to perform cost reduction.

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HDD Tester Low Cost Electronics

  従来はテスト基板にCPUを搭載しテストプログラムを走らせていが、通信基板によりテスト プログラムを走らせることにした。従来のテスト基板を排除し安価な通信ブリッジ基板に置き換 えることにより価格を低減することができた。

通信基板からHDDまでは距離が長いため(1m以上)、差動5Vの信号が必要であるが、 HDDの通信ラインは3.3Vであるためそのままでは接続できない。そこで、Test基板の代 わりに通信Bridge基板をもうけ、差動5V

3.3Vの変換を行った。

Disclosed by Hitachi Corporation

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