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User's manual
panel display is too small.
5.2.6 Input optical power is not enough.and cause input power to decease,so the panel
display is too small.
6. Warranty
6.1 NHNFA50U-B Series optical amplifiers are covered by ONE YEAR LIMITED
WARRANTY, which starts from the initial date of your purchase. We provide its customer
whole-life technical supports.
6.2 Please don't unfold the machine or remove any parts of the machine under warranty.
6.3 The unit fails to perform because of user faults,like the accidental and improper
using,storage or assembly.
6.4 Please send the product to us for repairing if product do not reach the quality
requirement.
6.5 If warranty is expired, and you need require,the user has to pay for the material.
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