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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.

srs SR245-Computer interface （GPIB & RS-232），srs SR245-Computer interface 測試

srs SR250-Gated integrator with gates to 2 ns，The SR250 Gated Integrator is a versatile, high-speed, NIM module designed to recover fast analog signals from noisy backgrounds.

SR255快速的取樣器模塊是有四的分離，用戶選擇的門寬度一個裝門的積分器從100 ps到1個ns。所有必要的電子被建立入這個高速模塊包括A/D、D/A和PROM更正電路消滅在抽樣的橋梁的固有非線形性。srs SR255-Gated integrator with gates 測試