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BENCH TOP MULTIMETER Bench Top Digital Multimeter - 5 1/2 Digits DM-1500 The model DM-1500 is a digital multi-meter designed for system and bench use with the maximum 5 1/2 digits display, featuring RS-232 and GPIB interfaces with full remote control capability. It is provided with the measurement functions for DC voltage/current, AC voltage/current. 4 or 2 wire resistance, frequency, period, diodes, continuity and math. Functions such as null,dB,dBm,limit test,and min/max/AVG are easily selected. The model DM-1500 is provided with a variety of interfaces for use in R&D sections and automatic production line.       High performance, High accuracy measurement   Measurement function     DC/AC voltage:DC-1000V MAX, AC-750Vrms MAX     DC/AC current:MAX5A     §Ù2W/§Ù4W Resistance:MAX 100M§Ù     Frequency:10Hz~300kHz     Period:3.333usec~0.1sec     Continuity:Test limit max 1k§Ù     Math function:null, dB/dBm, max/min/AVG, limit test     Menu function:12 kinds parameter   Trigger input:internal/external selectable   Measurement range:auto/manual selectable   GPIB and RS232 interface for external equipment   Bright, easy to view display using fluorescent display tube   Soft rubber key Specifications FUNCTION Range Resolution:   @5 1/2 digits (Frequency in AC voltage) Accuracy: one year+/-(% of readomg+digits) Remark DC VOLTAGE 100mV 1V 10V 100V 1000V 1uV 10uV 100uV 1mV 10mV 0.015+12 0.010+4 0.015+3 0.015+4 0.015+3 Input Resistance 100M§Ù True rms AC voltage 100mV 1V 10V 100V 750V 20Hz-40Hz 40Hz-100Hz 100Hz-20kHz 20kHz-100kHz Input impedance ¡§P1M§Ù//100pF 1.14+100 0.46+100 0.20+120 0.87+100 1.14+100 0.46+100 0.20+70 0.87+100 1.14+100 0.46+100 0.20+70 0.87+100 1.18+100 0.50+100 0.24+70 0.80+100 1.18+100 0.50+100 0.24+70 0.80+100 Resistance 100§Ù 1k§Ù 10k§Ù 100k§Ù 1M§Ù 10M§Ù 100M§Ù 1m§Ù 10m§Ù 100m§Ù 1§Ù 10§Ù 100§Ù 1k§Ù 0.02+11 0.02+3 0.02+3 0.02+3 0.02+3 0.02+3 1.20+11 Current source 1mA 1mA 100uA 10uA 5uA 500nA 500nA DC current 10mA 100mA 1A 5A 0.1A 1A 10A 100A 0.15+40 0.17+6 1.00+30 1.5+30 Shunt R 5§Ù@<100mA 0.05§Ù@1A,5A AC Current 1A 5A 10uA 100uA ¢®¢® 0.18+142@40Hz~10kHz 0.18+142@40Hz~10kHz Shunt R 0.05§Ù Frequency & Period 10Hz(0.1s)~300kHz(3.3333us) Input voltage Range:10mVrms~750Vrms Continuity Beeper below adjustable threshold(1§Ù~1000§Ù) Diode test 1V Range,1mA current source Temperature Test -200oC~+1360oC, Resolution 0.1oC, Accuracy 0.5%+/-2 UnitoC/oF Math. function Null,Min/Max/Avg,dBm,dB,Limit Test Power 100/120/220/230 VAC, 50/60 Hz Dimension 100mn(H) x 210mm(W) x 350mm(D),3.6kg Standard Accessories AC Cord,+/-Input Test Probe 1 pair,Operating Manual Option Option 1:GpIB Interface Option 2:Thermo Couple and Adaptor(K type) Option 3 : 4 Wore Ohm Test Leads  Bench Top Digital Multimeter - 4 1/2 Digits DM-441B The DM-441B is a 4 1/2 DIGIT, 20,000 count bench top multimeter. This True RMS meter has a basic accuracy of 0.05%. The DM-441B supports a full range of functions including: frequency, resistance, voltage, current with transistor check and added features like data hold, and continuity. The DM-441B is overload protected to 600 volts in the resistance ranges.     4 1/2 Digit display, 5 Digit Green LED,19999 count   Vdc Basic accuracy of 0.05%   Full overload protection   Continuity measurement up to 200kHz   Data hold, Diode check, TR hfe measurement available   True RMS in AC range   600V overload protection in Resistance range Specifications FUNCTION Range Resolution Accuracy DC VOLTAGE 200mV 10V +/-(0.1%+4digits) 2V 100 uV 20V 1mV 200V 10mV 1000V 100mV +/-(0.15%+4digits) AC VOLTAGE 200mV 10uA +/-(0.5%+20digits),(45Hz~1kHz) +/-(0.8%+10digits),(1Hz~10kHz) +/-(1.0%+20digits),(10Hz~20kHz) +/-(3.0%+30digits),(20Hz~50kHz) 2V 100uA +/-(0.5%+10digits),(45Hz~300Hz) +/-(0.8%+40digits),(300Hz~10kHz) +/-(1.0%+20digits),(10Hz~20kHz) +/-(3.0%+30digits),(20Hz~50kHz) 20V 1mV +/-(0.5%+10digits),(45Hz~300Hz) +/-(0.8%+40digits),(300Hz~10kHz) +/-(1.0%+20digits),(10Hz~20kHz) +/-(3.0%+30digits),(20Hz~50kHz) 200V 10mV 750V 100mV +/-(0.5%+10digits),(45Hz~1kHz) DC CURRENT 2mA 0.1uA +/-(0.5%+1digits) 20mA 1uA 200mA 10uA 2A 100uA +/-(0.75%+3digits) 10A 10uA AC CURRENT 2mA 0.1uA +/-(1.0%+10digits),(45Hz~10kHz) 20mA 1uA 200mA 10uA +/-(2.0%+20digits),(10Hz~20kHz) 2A 100uA +/-(1.0%+10digits) 10A 10mA RESISTANCE 200§Ù 10M§Ù +/-(2.0%+5digits) 2k§Ù 0.1§Ù +/-(0.2%+2digits) 20k§Ù 1§Ù 200k§Ù 10§Ù 2M§Ù 100§Ù +/-(0.5%+2digits) 20M§Ù 1k§Ù FREQUENCY 20KHz 1Hz +/-(1.0%+3digits) 200KHz 10Hz +/-(2.0%+3digits) TR hfe BASE CURRENT:3.5 A, Vce: Approx.4.5V DIODE CONTINUITY TEST VOLTAGE:4.5V Approx.,Maximum test Current:1mA Threshold:200§Ù or Less   Bench Top Digital Multimeter - 3 1/2 Digits   Model VC8045 - 3 1/2 Auto-range Bench-top Digital Multimeter 1999 counts max, Double display, Auto range, True RMS measurement, Auto calibration, Max/min hold, Relative mode Frequency response: 50Hz ~ 50kHz DC voltage: 200mV/2V/20V/200V/800V (¡¾ 0.06%) AC voltage: 200mV/2V/20V/200V/600V (¡¾ 0.6%) DC current: 200mA/20A (¡¾ 0.1%) AC current: 200mA/20A (¡¾ 0.8%) Resistance: 200/2k/20k/200k/2M¥Ø/20M¥Ø (¡¾0.05%) Power source: AC Dimension: 260 x 236 x 85mm, Weight: approx. 1500g