国产品牌DM3559台式万用表详细介绍
	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