中环科仪
3 组独立电源：30V/3A（5A）x2，可切换 2.5V/3.3V/5V/3Ax1
3 independent channels：30V/3A（5A）x2 and 2.5V/3.3V/5V/3Ax1
最小分辨率：1mV, 1mA
Minimum resolution: 100mV, 10mA
5 位电压，4 位电流显示
5-digit voltage and 4-digit current display
4 组面板设定 save/recall 功能（另有关机前状态记忆）
4 groups of panel setting save / recall function (additional state memory before shutdown)
Key-lock 按键锁功能
Key-lock function
Buzzer 蜂鸣提醒功能
Buzzer alert function
自动串并联同步操作
Automatic serial-parallel synchronous operation
Output ON/OFF 功能
Output ON/OFF function
过载与极性反向保护
Overload and reverse polarity protection
标配 USB 接口
Standard USB interface equipped
主要技术指标 Main Specifications
| 型号 | DPD-3303S | |||
| CH1&CH2 | CH3 | |||
| 输出额定电压值 Rated voltage output | 0~30Vx2 | 2.5V/3.3V/5Vx1 | ||
| 输出额定电流值 Rated current output | 0~3Ax2 | 3Ax1 (fixed) | ||
| 电压输出特性 Voltage Output Characteristics | ||||
| 电源效应 Power effect ion | ≤0.01%+3mV | |||
| 负载效应 Load effect | ≤0.01%+3mV（I≤3A）；≤0.02%+5mV（I＞3A） | |||
| 纹波与噪声 Ripple and noise | ≤1mVrms（I≤3A, 5Hz~1MHz）；≤2mVrms（I＞3A, 5Hz~1MHz） | |||
| 恢复时间 Recovery time | ≤100μs（50% load change, min load 0.5A） | |||
| 温度系数 Temperature coefficient | ≤300ppm/°C | |||
| 输出范围 Output range | 0 至设定电压连续可调 Continuously adjustable from 0 to set voltage | |||
| 电流输出特性 Current Output Characteristics | ||||
| 电源效应 Power effect ion | ≤0.2%+3mA | |||
| 负载效应 Load effect | ≤0.2%+3mA（I≤3A）；0.2%+5mA（I＞3A） | |||
| 纹波与噪声 Ripple and noise | ≤3mArms（I≤3A）; ≤6mArms（I＞3A） | |||
| 输出范围 Output range | 0 至设定电流连续可调 Continuously adjustable from 0 to set current | |||
| 并联跟踪操作 Parallel Tracking Operation | ||||
| 电源效应 Power effect ion | ≤0.01%+3mV | |||
| 负载效应 Load effect | ≤0.01%+5mV (I≤3A) / ≤0.02%+10mV (I>3A) | |||
| 串联跟踪操作 Series Tracking Operation | ||||
| 电源效应 Power effect ion | ≤0.01%+5mV | |||
| 负载效应 Load effect | ≤300mV | |||
| 跟踪误差 Tracking error | ≤0.5%+10mV of the master (空载。加载时需加上负载效应≤300mV Without load. ≤300mV load effect should be added when loading) | |||
| 显示 Display | ||||
| 电压表 Voltage meter | 32.000V full scale, 5 digits 0.4-inch LED display | |||
| 电流表 Current meter | 3.200A full scale, 4 digits 0.4-inch LED display | |||
| 电压分辨率 Voltage resolution | 1mV | |||
| 电流分辨率 Current resolution | 1mA | |||
| 编程精度(25±5°C) Programming accuracy | ±(0.03% of reading + 10mV) (0~30V) ±(0.3% of reading + 10mA) (I≤3A)) |
|||
| 读数精度 (25±5°C)Reading accuracy | ±(0.03% of reading + 10mV) (0~30V) ±(0.3% of reading + 10mA) (I≤3A) |
|||
| CH3 规格 CH3 Specification | ||||
| 输出电压 Voltage output | 2.5V, 3.3V, 5V, ±8% | |||
| 输出电流 Current output | 3A | |||
| 电源效应 Power effect | ≤25mV | |||
| 负载效应 Load effect | ≤25mV | |||
| 纹波和噪声 Ripple and noise | ≤2mVrms | |||
| 保护 Protection | 过载，输出反极性保护 Overload and output reverse polarity protection | |||
| 锁键盘 Lock keyboard | 有 Yes | |||
| USB 接口 USB interlock | 有 Yes | |||
| 存储调出 Save and recall | 5 组；面板 4 组，含关机前状态记忆共 5 组 5 groups；4 groups on the panel, 5 groups including state memory before shutdown | |||
| 绝缘度 Insulation degree | 底座与端子间 between base and terminal:≥20MΩ/500VDC 底座与交流电源线间 between base and AC power cable:≥30MΩ/500VDC |
|||
| 使用环境 Operation environment | 环境温度 Environment temperature:0~40°C 相对湿度 Relative humidity:≤80% |
|||
| 存储条件 Storage environment | 环境温度 Environment temperature:-10°C~70°C 相对湿度 Relative humidity:≤70% |
|||
| 电源 Power supply | AC 115V/220V±15% 50Hz/60Hz | |||
| 附件 Accessories | 用户手册 Manual, 电源线 Power cable, USB 接口电缆*1 USB interface cable*1, 上位机光盘*1 Software*1 | |||
| 尺寸 Dimensions | 310(D)×250(W)×150(H)mm | |||
| 重量 Weight | 7.5kg | |||