1. Measurement of the power of optical sender (dbm and w)
2. Insertion loss test of optical devices.
3. Light source function
4. FC, SC, ST, LC switchable (One style supplied with unit, order others separately)
5. wavelenth(nm): 850/1300/1310/1490/1550/ 1625nm (power meter) 6 .wavelength:1310 / 1550nm( light source)
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