Wishcolor LM399 5 ½ or 6 ½ Digit High Precision Voltage Reference for Multimeter Calibration

Description The voltage standard uses the LM399 for Linear Technology as the reference element with two sets of voltage outputs 6 95V 10V 6 95V is the direct output of LM399 10V is 6 95V outputted to 10V after being boosted by a precision op amp The LM399 reference IC is used as a reference IC in many 6 ½ digit multimeters and is a constant temperature reference Compared with 4 ½ digit references such as AD584 and BQ588 its temperature coefficient is much smaller and basically does not exceed 0 5PPM °C It can be used as a 5 ½ digit or 6 ½ digit voltage reference Features USB 5V power supply convenient for power supply Small size and light weight convenient for transfer between reference branches 0 5PPM °C for 6 95V 1PPM °C for 10V Output adopts 4mm standard safety banana socket Maximum noise level 7uVRMS Product size 93x70x28mm Net weight 84g Electrical Performance Parameters Power supply voltage 5V 1A Power supply interface Type C 6 ½ digit precision warm up time more than 1 hour Output voltage 6 95V 10V Voltage calibration instrument DMM7510 7 ½ digit multimeter for KEITHELY Package Included 1 x Voltage Reference Standard