XL2 Audio Analyzer. With the balanced XLR and unbalanced RCA inputs, the XL2 is a comprehensive audio analyzer. It simultaneously measures level, distortion (THD+N) and frequency.The internal loudspeaker or headphone is used for audible monitoring of the test signal or the residual distortion.L2 Audio Analyzer. With the balanced XLR and unbalanced RCA inputs, the XL2 is a comprehensive audio analyzer. It simultaneously measures level, distortion (THD+N) and frequency.
Leukocyte esterase is a screening test used to detect a substance that suggests there are white blood cells in the urine. This may mean you have a urinary tract infection. If this test is positive, the urine should be examined under a microscope for white blood cells and other signs that point to an infection.
1 Inflammation of the urinary tract and ureters or infection in bladder could also be the cause of leukocytes esterase in urine. 2  One more reason for leukocyte esterase in urine, is sexual intercourse. 3  During sexual intercourse the bacteria may get pressed into the urethra.idneys, bladder, ureters and urethra form the urinary system and when analysis of urine shows leukocytes (without nitrates) in urine it indicates infection in the system. To diagnose leukocytes, urinalysis has to be done in order to know the level of leukocytes esterase in urine.