公开(公告)号：DE112005001501T5

公开(公告)日：2007-05-16

申请号：DE112005001501

申请日：2005-06-13

Applicant: ADVANTEST CORP

Inventor： HARUTA MASATO ,  KONNO HIROYUKI ,  KIMURA NAOYA ,  NAKAYAMA YOSHIKAZU

IPC: G01R27/06

Abstract: There are measured characteristics of a jig (fixture) used to calculate and measure circuit parameters of a device under test. There is provided a jig characteristic measuring device which measures the jig characteristics of a jig which includes signal lines used to connect a DUT and a network analyzer with each other (namely, the reflection characteristics of the signal lines, and the transmission S parameters), measures the reflection coefficients of the signal lines in an open state where the DUT is not connected to the signal lines measures the reflection coefficients of the signal lines in a short-circuit state where all the signal lines are grounded, and derives the jig characteristics of the jig based on these measured results.

公开(公告)号：JP2003139574A

公开(公告)日：2003-05-14

申请号：JP2001340312

申请日：2001-11-06

Applicant: ADVANTEST CORP

Inventor： KIMURA NAOYA ,  GOTO MASAYUKI

IPC: G01D7/00

Abstract: PROBLEM TO BE SOLVED: To display magnitude relation between data of a measured signal or the like and a threshold value in an understandable way. SOLUTION: The threshold value is standardized into a common threshold value T. The height of an display graph 42 shows the magnitude relation between the data and the threshold value by height difference between a straight line 44a showing the common threshold value T and itself. By displaying the height of the display graph 42 and the straight line 44a showing the common threshold value T, the magnitude relation between the data and the threshold can be displayed. The display is easy to see because the threshold value is standardized.

公开(公告)号：JPH11183535A

公开(公告)日：1999-07-09

申请号：JP35517597

申请日：1997-12-24

Applicant: ADVANTEST CORP

Inventor： FUJISAKI HIRONORI ,  ABIKO NORIHIDE ,  SAITOU CHIEZOU ,  UBUKATA KEIICHI ,  KIMURA NAOYA

IPC: G01R27/28

Abstract: PROBLEM TO BE SOLVED: To measure the S-parameter of a four port device, without changing cable connection in the middle of measurement, by performing switchover of two switches of a four port test set, by the control signals of a network analyzer. SOLUTION: A four port test set 20 is composed of switches SW1 , SW2 , and a control unit 21, and the control unit 21 receives control signals from a network analyzer 10 and performs switchover of the switches SW1 , SW2 respectively. And a signal from a port P1 of the analyzer 10 is switched over to a port P4 or port P5 by the switch SW1 , and a signal from a port P2 is switched over to a port P3 or port P6 . Consequently, it becomes possible to measure the S parameter of a four port device 30, without changing cable connections in the middle of measurement, since a section between each port P3 -P6 of the test set 20 and each measuring terminal Rx , A1 , A2 , Tx of the four port device 30 is all connected with a cable respectively. Accordingly, throughputs of measurement increase.