US 11,714,130 B2
Error rate measuring apparatus and error distribution display method
Hiroyuki Onuma, Kanagawa (JP)
Assigned to ANRITSU CORPORATION, Kanagawa (JP)
Filed by ANRITSU CORPORATION, Kanagawa (JP)
Filed on Dec. 16, 2021, as Appl. No. 17/552,608.
Claims priority of application No. 2021-033606 (JP), filed on Mar. 3, 2021.
Prior Publication US 2022/0283223 A1, Sep. 8, 2022
Int. Cl. G01R 31/3177 (2006.01); G01R 31/317 (2006.01); G06F 11/10 (2006.01); H04L 25/49 (2006.01)
CPC G01R 31/3177 (2013.01) [G01R 31/31703 (2013.01); G06F 11/10 (2013.01); H04L 25/4917 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An error rate measuring apparatus that inputs a Non Return to Zero (NRZ) signal of a known pattern as a test signal to a device under test, receives a signal from the device under test with the input of the test signal, and measures whether or not a forward error correction (FEC) operation of the device under test is possible based on a comparison result of the signal received from the device under test and the test signal, the error rate measuring apparatus comprising:
a processor configured to:
set a codeword length and an FEC symbol length of the FEC corresponding to a communication standard of the device under test; and
compare bit string data obtained by converting the signal received from the device under test with error data to detect an FEC symbol error of each FEC symbol length; and
a display configured to, based on a detection result of the FEC symbol error, associate the bit string data of the FEC symbol length as one point with one unit region of a display region of the display, and perform color-coding display on the display depending on presence or absence of occurrence of the FEC symbol error by each FEC symbol length.