Gated Integrators and Boxcar Averagers SR280 — Mainframe and display module · NIM compatible mainframe · 9 available slots · Analog, digital and bar graph meters · SR280 ... $2000 (U.S. list) SR280 Mainframe and Display The SR280 is the Boxcar Averager System mainframe. The mainframe is NIM (Nuclear Instrumentation Module) compatible and has twelve slots. The three right-most slots are filled by the display module and unregulated power supplies, leaving nine slots for other NIM modules. The DC power supply regulators are mounted on a heat sink on the rear of the mainframe. The display module features three types of meters. The analog meter is for “peaking-up” an experimental signal. The digital voltmeter provides a numeric readout. The “Digital Hold” button may be used to hold the digital meter’s reading. A 20-segment bar graph display may be used to show rapidly changing data. Stanford Research Systems SR280 Specifications Analog meter Accuracy 2% Range ±10 VDC Digital meter (3½-digit) Accuracy 0.25 % Range ±10 VDC Bar graph (20-segment) Accuracy 2% Resolution 5% Bandwidth 50 kHz Range 0 to 10 V, ±10 V, –10 to 0 V Power mains 115 or 230 VAC, 50/60 Hz Mechanical NIM-compatible, nine available slots Dimensions 16.875" × 8.714" × 13.0" (WHD) DC power ±12 VDC at 2 A, ±24 VDC at 1 A (120 VAC is wired to each slot) Warranty One year parts and labor on defects in materials and workmanship