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2300 System Signal Conditioning Amplifier           Description The 2300 System conditions and amplifies low-level signals to high-level outputs for multiple-channel, simultaneous dynamic recording and display on external devices. Among its features, each 2310 / 2311 Module includes a built-in power supply, active filtering, three simultaneous outputs, playback mode, wide frequency response, and electronic bridge balance. Socket-mounted integrated circuits and discrete components achieve the demanding specifications listed while providing ease of serviceability. Up to ten 2310/2311 Modules can be mounted in a Model 2350 Rack Adapter ; or up to four modules in a Model 2360 Portable Enclosure; or, a single 2310/2311 can serve as a stand-alone unit. Features Selectable bridge excitation, 0.5 to 15 Vdc (0.4 to 15 Vdc for Model 2311). Fully adjustable calibrated gain from 1 to 11 000. Dual-range ( + 5000 and + 25 000 microstrain) automatic bridge balance, with "keep-alive" power to preserve balance for months without external power. All bridge completion built in, including 120- or 1000- and 350-ohm dummies. Dual polarity two-step double shunt calibration. Bandpass:       2310:    25 kHz (-0.5 dB)                    65 kHz (-3.0 dB)       2311:    50 kHz (-0.5 dB)                  125 kHz (-3.0 dB). Switchable active filter - up to six poles. Three simultaneous buffered outputs. Playback mode to filter and observe or re-record previously recorded magnetic tape data. Input impedance above 10 megohms at all times.   Configuration The 2310/2311 Signal Conditioning Amplifier Modules can be used as stand-alone single-channel units or can be plugged into racks for multi-channel testing.   Signal Conditioning Amplifiers Model 2310   Model 2311   Digital Display Model 2331   (With Peak-Hold)   Mounting Hardware Model 2350 Rack Adapter        Model 2355 10-Channel Enclosure   Model 2360 4-Channel Enclosure   Page 1 of 7