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N7700A PAS PDL measurement

Question asked by KrutDing on Jan 13, 2019
Latest reply on Jan 14, 2019 by mkelly

Hi, we use keysight N7700A IL/PDL software to measure the WDM IL and PLD spectrum.

The software will output 2 spectrum curve : TE and TM after sweep.

Is there any naming rule for TE/TM curve? 

When we measure repeatedly, the same curve sometimes named different name.

for example,

it outputs two curves, A named TE, B named TM

but sometimes A named TM, B named TE

this makes us a little confuse.