Click Image to Enlarge Protek B940

True RMS AC volts and amps measurements Capacitance and Frequency measurements Back-lit display and Auto/Manual ranging MIN/MAX and Relative mode Delay hold mode AC Line or Battery Operated RS-232 Interface with software

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Selection Guide

Model	Description	List Price	Sale Price
B940	4000 count Bench DMM w/RS232 Interface	$174.00	$149.64

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DC Voltage

Range 400mV, 4V, 40V, 400V and 1000V Best Resolution 0.1mV Accuracy ± (0.3% + 2D) Input Impedance 10MW Overload Volts 1000V DC or 750V AC RMS

AC Voltage

Range 4V, 40V, 400V and 750V Best Resolution 1.0mV Accuracy ± (0.8% + 5D) 45Hz to 450Hz ± (1.2% + 5D) 45Hz to1KHz Input Impedance 10MW Overload Volts 1000VDC or 750V AC RMS

DC Current

Ranges 4mA, 40mA, 400mA and 10A Best Resolution 1µA Accuracy ± (0.8% + 5D) Overload protection 0.5A /250V and 15A/250V fuse

AC Current

Ranges 4mA, 40mA, 400mA and 10A Best Resolution 1µA Accuracy ±(1.5% + 5D) 45hz to 400Hz: 4mA to 400mA ranges ±(2.0% + 5D) 45hz to 400Hz: 10A range Overload Protection 0.5A /250V and 15A/250V fuse

Resistance

Range 400W , 4K W W 40KW, 400KW, 4MW, 40MW Best Resolution 0.1W Accuracy ±(0.5% + 5D) 400W to 400KW ranges ±(1% + 5D) 4MW range ±(1.5% + 5D) 40MW range

Frequency

Range 100Hz, 1KHz, 10KHz and 600KHz Best Resolution 0.01Hz Accuracy ± (0.1% + 2D) Sensitivity 100mV RMS, 1Hz to 20KHz 500mV RMS, 20KHz to 600KHz Overload 250V

Capacitance

Range 4nF, 40nF, 400nF, 4µF, 40µF Best Resolution 0.1pF Accuracy ±(2% + 4D) 4nF range (Relative Mode) Overload 250V

Converter

Display 10 counts per 1mV DC Accuracy ± (0.3% + 5D) Overload 250V

Diode test

Test Volt 3 V Test Current 0.6mA Overload 250V

Continuity

Buzzer will sound at < 40W Resistance Overload 250V

General Specifications

Size 3.3" H x 9" W x 9.4" D Weight 3.3 lbs Power 9V NEDA battery or 90 to 132VAC / 198 to 264VAC @ 50/60Hz (Adapter Supplied) Accessories Manual, Test leads, 9v Battery, RS-232 cable, Software