Tektronix TOP400

The Tektronix TOP400 is a handheld optical attenuator. Its design allows it to have less than 2 dB of insertion loss. The TOP400, when it is used with an optical power meter and source, will allow the user to manually dial in attenuation to determine system headroom. It is a passive device and does not need any batteries or power for operation.

The TOP400 will use a proprietary scheme for the attenuating mechanism. The small size and large dial indicator makes this instrument an indispensable tool for fiber optic line commissioning,for bit error rate (BER) measurements, for system margin analysis and for receiver sensitivity testing. All of the optical connections are via the precision Universal Connector Interface (UCI) that will offer low insertion loss, low return loss and stability.