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2100 System Signal Conditioner/Amplifier           Introduction The demands of today's measurement applications are more exacting than ever before. An instrumentation system must provide durability and versatility; reliability with ease of operation; and economy with no sacrifice of accuracy. The 2100 System was engineered with all of these requirements in mind, and to provide a durable, multi-channel signal conditioner/amplifier system capable of performing equally well in a wide variety of test applications and environments. And the 2100 System has proven itself through applications ranging from measurements on the ocean floor to testing of the space shuttle. The 2100 System has become the standard by which others are measured for a broad range of signal conditioning applications. Features Accepts full, half, or quarter bridges; all bridge-completion gages built in, including 120/1000- and 350-ohm dummies. Fully adjustable and regulated bridge excitation on each channel; 0.5 to 12 Vdc by front-panel control. Continuously variable amplifier gain, 1-2100 by front-panel control. Separate bridge-power switch. Output 10 Vdc at 100 mA, short-circuit proof and current limiting standard. LED null indicators provided on each channel to indicate amplifier and bridge-balance condition. High stability with temperature and time. Frequency response up to 50 kHz. Direct channel-by-channel display of data, with optional peak hold/retention capability.   Description The 2100 System accepts low-level signals, and conditions and amplifies them into high-level outputs suitable for multiple-channel simultaneous dynamic recording. The 2100 System is compatible with strip chart, magnetic tape and X-Y recorders, as well as the Vishay Measurements Group Model 2000 A/D Converter . Strain gage, load/pressure transducer and nickel temperature sensor inputs can be handled by the 2100 System without any rewiring. An important design objective achieved is miniaturization of the system while maintaining adequate spacing around the front-panel controls. All operational controls are located on the front panel for maximum setup efficiency. Frequently used controls are finger-operated, while initial setup adjustments are made through the front panel with a screwdriver. Continuously variable amplifier gain is achieved via a locking ten-turn concentric-dial counting knob, which permits resetting to a predetermined value for repeating routine tests. A combination of integrated circuits and discrete components assures maximum performance and ease of service at the lowest possible price. The Model 2130 or 2131 Digital Display expands the capabilities of the 2100 System to include direct channel-by-channel display of data. Peak hold/retention capability is provided with the Model 2131. Configuration A 2100 System consists of one Power Supply, one to five Strain Gage Conditioner/Amplifiers and Mounting Hardware. A Digital Display is optional.   Power Supplies Model 2110B   (AC Mains-Operated) Model 2111   (DC-Operated)   Strain Gage Conditioner/Amplifier Model 2120B     Digital Displays Model 2130   Model 2131 (Peak Hold/Retention)     Mounting Hardware Model 2150 Rack Adapter        Model 2155 Cabinet   Model 2160 4-Channel Enclosure   Page 1 of 9