特点:
●动态范围:<1pA – 200μA
●集成数字化模块和滤波器
●光纤,RS232 和RS485接口
●集成校准测试源
●提供完全控制的集成模式
●可外触发
●模拟量输出监测,带线性模式和对数模式
●频率输出检测(VFC)
●可选3kV高压输出(作为电离室偏压)
应用:
●电离室读取系统
●低电流和电荷测量
选配:
●辅助高压输出200,500,1000,2000,3000V,正或负极性
参数:
工作原理:门积分器(电荷积分放大)
积分电容:双电容,软件可选,默认为100pF和3300pF
输入噪声:空载RMS噪声<200fA,(积分时间为1秒,积分电容为10pF(≤25℃))
输入补偿:15 – 25℃时<10pA,,典型值<3pA。补偿可通过零减法消除
输入阻抗:<3kΩ
输入保护:背对背快速二极管,电花隙保护
稳定度:输出漂移<200fA/小时(25±1℃稳定环境)
外部精度:满刻度时好于0.5%,积分时间500μs – 1s(在内置电流源校准后)
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