↑OFW λ―Έλ‹ˆ OTDR κ΄‘ν•™ Otdr κ΄‘ν•™ λ°˜μ‚¬κ²½ ν™œμ„± μ„¬μœ  라이브 ν…ŒμŠ€ν„° 1550nm 20dB κ΄‘ν•™ λ°˜μ‚¬κ³„ ν„°μΉ˜ 슀크린 OPM VFL iOLA - TopDealBox