4 Channel. 8Channel. 16Channel, Operating Wavelength (nm) 1271.1291 or 1270.1290 etc. Center Wavelength accuracy(nm) ± 0.50 Channel Spacing(nm)20.Parameters1x21x41x81x16Center Wavelength (nm)ITU, ITU+1Passband (nm)ITU±6.5Operating Wavelength (nm)1460~1620 or 1260~1620Channel Space (nm)20Fiber TypeSMF-28e or customer specifiedIL (dB) (P/A Grade)0.7/1.01.4/1.72.0/2.53.5/4.0Isolation (dB)Adjacent Channel30Non-Adjacent Channel50Ripple (dB)0.30.40.50.5PDL (dB)0.2PMD (ps)0.1RL (dB)45Directivity (dB)50Maximum Optical Power (mw)500Operating Temperature-40~85Storage Temperature-40~85BOX Package (mm)100*80*10140*115*18LGX Package LGX1U, 2U19'' Rack mount Package1U