US 7,519,509 B2
Network analyzer, transmission tracking error measuring method, network analyzing method, program, and recording medium
Yoshikazu Nakayama, Saitama (Japan); and Masato Haruta, Saitama (Japan)
Assigned to Advantest Corporation, Tokyo (Japan)
Appl. No. 10/599,124
PCT Filed Mar. 15, 2005, PCT No. PCT/JP2005/005066
§ 371(c)(1), (2), (4) Date May 18, 2007,
PCT Pub. No. WO2005/093438, PCT Pub. Date Oct. 06, 2005.
Claims priority of application No. 2004-092296 (JP), filed on Mar. 26, 2004.
Prior Publication US 2007/0285108 A1, Dec. 13, 2007
Int. Cl. G06F 11/30 (2006.01); G21C 17/00 (2006.01)
U.S. Cl. 702—185  [702/57; 702/69; 324/601; 324/638] 12 Claims
OG exemplary drawing
 
9. A transmission tracking error measuring method of measuring a transmission tracking error of a network analyzer that is connected to a test set that comprises network analyzer side ports, device under test side ports that are connected to a device under test, and a port connecter that selects any one of the device under test side ports, and connects the selected device under test side port to one of the network analyzer side ports, wherein the device under test side ports constitute a main port group and a sub port group whose connection to the network analyzer side ports is independently set, the network analyzer comprising transmission and reception ports that are connected to the network analyzer side ports one by one, and are used to transmit/receive a signal, the transmission tracking error measuring method comprising:
realizing, in a connection operation, a combination of one of the possible connections of the main port group and one of the possible connections of the sub port group for all the possible connections of the main port group;
realizing all couplings for one combination of two ports for the device under test side ports connected to the network analyzer side ports if the combination is realized by said connection operation;
measuring a signal prior to being transmitted by transmission and reception port, and a resulting signal after said signal has been transmitted;
determining a transmission tracking error of the coupling realized by said device under test side port coupling realizing based on a measured result of said signal measuring; and
deriving a transmission tracking error other than the transmission tracking error determined by said transmission tracking error determining based on the transmission tracking error determined by said transmission tracking error determining.