技术参数 (maximum or minimum as applicable unless otherwise noted) 灵敏度 10-3 to 10-11 ampere/volt with nine decade current gain ranges. 增益 Output gain multiplier varies sensitivity in 3 steps,X0.1,X1.0 and X10, for optimum dynamic range and overload capability. 增益精度 ±2% of reading (10-3 to 10-9 ampere/volt ranges); ±3% of reading (10-9 thru 10-11 ampere/volt ranges). 输入电流补偿 Less than 0.5X10-13 ampere @ 50℃.Typically 1×10-4 @25℃. 输入压降 Less than 200 microvolts, 10-5 to 10-11 ampere/volt ranges. 上升时间（低通滤波器） Front Panel adjustable from 10 microseconds to 1 second in a 1-3-10 sequence; IN position rise time is less than 5 microseconds. Standard rolloff is 12 dB/octave. Jumper option for 6 dB/oct when 1211 is applied in feedback control loops. 输出： a) 600Ω outputs (2) b) Lo-Z output (to 25 mA, 50Ω) c) Unity gain output(X1) 输出电压 22 Vpp into 1 K load (Lo-Z out) 输出端极性 Unity gain (X1) Non inverted Lo-Z（50Ω） Inverted 600Ω Inverted 输出稳定性 Output voltage offset stability better than 0.003% per ℃. 归零设置 Input offset nulling. Used to adjust for precisely zero bias voltage on detectors such as photovoltaic diodes. Alternatively, can adjust for zero d.c. offset on output. 偏置 Zero to ±5 volts, adjustable and polarity-selectable with rear panel vernaier(10-turn) and switch. Stability is 100ppm/℃. 门控 TTL-compatible logic 0 or switch closure to ground (rear panel BNC input) provides gated operation of preamplifier signal path; maximum gating frequency is 5 kHz. 功率 100 to 130 or 200 to 260 VAC (switch-selectable), 50-60 Hz, 10Watts. 尺寸 90×215×380(3.5＂high×8.5＂wide×15＂deep)
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