国产万用表

产品性能：

．直流电压5 4/5位，500,000 Counts高分辨率量测
．频率计数6位显示、999,999 Counts高分辨率及0.002%高精准度量测
．高精密直流电压量测(为0.02% )及每秒5次快速量测
．高频宽(为100KHz)，交流/交直流混合True RMS电压量测功能
．全范围(电阻，电容)输入保护(为1000V）
．T1-T2双轨K-Type温度量测-50度C到1000度C
．光电耦合隔离式RS-232计算机联机接口
．WIN 95/98TM兼容软件
．自动换文件纪录MAX，MIN，MAX-MIN读值
．资料保持(Data Hold)，相对值REL模式测量
．每秒高达60次高速模拟条状显示
．直流电压测量范围0.001mV~1000V，交流电压测量范围0.01mV~1000V，交直流电流测量范围0.01μA~20A
．电阻值测量范围0.01Ω~50MΩ，电容值测量范围10pF~9999μF
．具有四个可调触发准位的Line Level Frequency
．数字逻辑准位频率范围5Hz~2MHz
．Duty Cycle比率量测，二极管测试
．过程控制循环电流测量(%4-20mA)
．20种可调整的阻抗值作功率测量(dBm)
．高速自动换档，连续性声音提示(<100μS)
．大型背光LCD显示

　

產品規格

DC Voltage Range & Accuracy Range DM3559 DM3557 500.00mV, 5.0000V, 0.02% + 2d 0.03% + 2d 50.000V     500.00V 0.04% + 2d 0.05% + 2d Input Impedance: 10MΩ // 30pF nominal      (80pF nominal for 500mV Range)   Ohms Range & Accuracy Range DM3559 DM3557 500.00Ω 0.07% + 10d   5.0000KΩ   0.1% + 6d 50.000KΩ 0.07% + 2d   5.0000MΩ 0.2% + 6d 0.4% + 6d 50.000MΩ 2.0% + 6d 2.0% + 6d   O.C.Voltage : <1.3VDC (<3VDC for 500Ω)   Capacitance Range & Accuracy    50.00Nf 0.8% + 3d 500.0nf 0.8% + 3d 5.000uF 1.0% + 3d 50.00uF 2.0% + 3d 500.0uF 3.5% + 5d 9999uF 5.0% + 5d   Accuracy with Film Capacitor or Better DC Current Range & Accuracy 500.00uA 0.15% + 20d 5000.0uA 0.1% + 20d 50.000mA 0.15% + 15d 500.00mA 0.1% + 20d 5.0000A 0.5% + 10d 10.000A * 0.5% + 20d  *10A Continuous, 20A for 30 Second Max with  5 Minutes Cool Down Interval  Audible Continuity Tester  Audible Threshold: Between 20Ω and 200Ω  Response Time < 100uS  dBm  At 600Ω, -11.76dBm to 54.25dBm  Accuracy: 0.25dB + 2d (@40Hz to 20KHz)  Selectable Reference Impedance Values of 4, 8,  16, 32, 50, 75, 93, 110, 125, 135, 150, 200,  250, 300, 500, 600, 800, 900, 1000, 1200Ω  Input Impedance: 10MΩ // 30pF nominal AC / AC+DC Voltage Range & Accuracy   DM3559 DM3557 20Hz to 45Hz 500.00mV, 5.0000V 1.5% + 40d   50.000V   Unspec'd 500.00V, 1000.0V Unspec'd   45Hz to 300Hz 500.00mV 0.3% + 20d   5.0000V, 50.000V 0.8% + 20d 0.8% + 60d 500.00V, 1000.0V 0.4% + 40d     300Hz to 5KHz 300Hz to 1KHz 500.00mV 0.3% + 10d 0.8% + 40d 5.0000V, 50.000V, 0.4% + 40d 2.0% + 60d 500.00V     1000.0V 0.8% + 40d 1.0% + 40d   5KHz to 20KHz 1KHz to 20KHz 500.00mV 0.5% + 20d 1Db ** 5.0000V, 50.000V 0.8% + 20d 2dB ** 500.00V 0.5% + 20d 3dB ** 1000.0V Unspec'd Unspec'd   20KHz to 100KHz 500.00mV 2.0% + 40d   5.0000V, 50.000V 4.0% + 40d ** Unspec'd 500.00V Unspec'd   1000.0V       Input Impedance: 10MΩ // 30pF nominal (80pF nominal for 500mV Range) Residual Reading less than 50d with Test Leads Shorted * From 5% to 10% of Range : Accuracy % of Reading (or in dB) + 80d ** From 5% to 10% of Range : Accuracy % of Reading (or in dB) + 180d * *From 10% to 15% of Range : Accuracy % of Reading (or in dB) + 100d 1000V Frequency Range to 1KHz T1-T2 Dual Temperature (DM3559 Only) Range Accuracy -50.0℃ to 1000.0℃ 0.3% + 1℃ -58.0℉ to 1832.0℉ 0.3% + 2℉  Thermocouple Range & Accuracy not Included  Diode Tester Range Accuracy Test Current Open Circuit     Typical Voltage 5.0000V 1% + 1d 0.8mA < 3.5VDC  DC Loop Current %4-20mA  4mA=0%(Zero), 20mA=100%(Span) Resolution: 0.01% Accuracy: ±25d AC / AC+DC Current Range & Accuracy Range DM3559 DM3557   50Hz to 60Hz 500.00uA     5000.0uA     50.000mA 0.5% + 50d 1.0% + 40d 500.00mA     5.0000A     10.000A *       40Hz to 1KHz 500.00uA     5000.0uA     50.000mA 0.7% + 50d 1.0% + 40d 500.00mA     5.0000A     10.000A *       1KHz to 10KHz 500.00uA     5000.0uA 2.0% + 50d Unspec'd 50.000mA     500.00mA     5.0000A Unspec'd Unspec'd 10.000A *       *10A Continuous, 20A for 30 Second Max with   5 Minutes Cool Down Interval  AC Hz Line Level Frequency Range Accuracy 5.0000Hz to 200.000KHz 0.002% + 4d Sensitivities (Sine Wave):  0.1V min @500mV Range 1V min @5V Range 10V min @50V Range 100V min @500V Range 900V min @1000V Range  Logic Hz Logic Level Frequency Range Accuracy 5.0000Hz 0.002% + 4d to 2.00000MHz    Sensitivity : 2.5V Square Wave  % Duty Cycle Range Accuracy 0.1% to 99.99% 3d/KHz + 2d  Input Frequency: 5Hz to 500KHz, 5V TTL Family Crest Mode (Instantaneous Peak Hold) Accuracy: Specified Accuracy ±100d for changes >0.8msec in Duration

General Specification Power Supply : AC115V/230V±10%, 60/50Hz Switch Selectable Power Consumption : Approx. 6VA Operation Humidity/Temperature Range : 80% R.H. (+5℃ to 31℃), 50% R.H. (+31℃ to 40℃) Storage Temperature/Humidity Range : -10 to 60℃, <80% R.H. Warm-up Time : Approx. 30 min. Dimensions : 213(W) x 88(H) x 394(D) mm Net Weight : 3.6Kg Accessories : Power Cord x1, Operation Manual x1, Test Lead x1set, K-Type Thermocouple x1(DM3559 Only), RS-232 Software(floppies) x1