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srs SIM9B2-SIM prototype kits，srs SIM9B2-SIM prototype kits 測試

srs SR470-Laser shutters & controllers,Introducing two new optical shutter systems from SRS-the SR470 Laser Shutter Controller and SR474 Four-Channel Laser Shutter Driver.

srs SR556-Current preamplifier 測試，The SR556 is a low-noise, high-bandwidth, fixed-gain current (trans-impedance) amplifier designed to work with SRS lockin amplifiers. Current amplifiers provide

srs SR445A-Quad 350 MHz preamplifier，The Model SR445A 350 MHz Preamplifier contains four wide-bandwidth, DC-coupled amplifiers, each with a gain of 5. The four channels may be used independently,

srs DB64-Coax delay with 0.5 ns resolution，The SRS Model DB64 Coax Delay Box provides switch-controlled delays from 0 to 63.5 ns with 0.5 ns resolution.

srs SR200-Gate scanner for SR250 and SR255，The SR200 Gate Scanner module is designed to automate waveform recovery with the SR250 and SR255 Gated Integrator modules.

srs SR235-Analog math processor w/ 36 functions,

srs SR240A-300 MHz quad preamplifier ，The model SR240A 350 MHz Preamplifier is a 4-channel, DC-coupled instrument with a gain of 5 per channel.