Products > Test Equipment
JOY7307 Multi-Calibrator with 7.5digit DCV, 6.5digit DCI and standard Ohm output
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Edward3121:
A simple demo video: https://youtu.be/vVtmyE5ElQU

Features:
<>Use LTZ1000ACH as voltage reference.
<>Use VHD200 for 7V to 10V conversion.
<>7.5Digit DC Voltage resolution, INLmin<1ppm, TCmin<0.3ppm.
<>6.5Digit DC Current resolution, INLmin<2ppm, TCmin<3ppm.
<>9 physical resistors Ohm Output with 4-wire.
<>Low noise 1.5uVp-p@10Hz typical.
<>Additional DC voltage measurement function.
<>Fully digital calibration.
<>Small size (140x100x83mm), battery powered, suitable for portable use.

Introduction:

JOY7307 is a new works of selena2211 ( Chinese nickname: 乐逍遥) (NOT me). JOY7307 is a multifunction calibrator powered by a lithium battery, suitable for portable use. JOY7307 uses LTZ1000ACH as the voltage reference and VHD200 as the 7V to 10V conversion resistor to achieve ultra-low temperature drift, high stability and low noise. The DC Voltage resolution is 7.5 digit, the lowest adjustable value is 0.1ppm.

Functions:
<>DCV OUTPUT:
    #10V Range: -10uV~11V adjustable, 7.5Digit, INLmin<1ppm, TCmin<0.3ppm
    #1V Range: 0uV~1.1V adjustable, 7.5Digit, INLmin<1ppm, TCmin<1ppm
<>DCI OUTPUT:
    #100mA Range: 0~110mA adjustable, 6.5Digit, INLmin<2ppm, TCmin<5ppm
    #1mA Range: 0~1.1mA adjustable, 6.5Digit, INLmin<2ppm, TCmin<3ppm
<>Ω OUTPUT:
    #ΩRange using 9 physical resistor, they are 0Ω, 10Ω, 100Ω, 1kΩ, 10kΩ, 100kΩ, 1MΩ, 10MΩ and 100MΩ. The performance of Ω range is related to the actual resistor used, and the calibration value is 7.5 digits.
<>MEAS:
    #DC Volt meter, 12.5V range, 7.5Digit, INLmin<1ppm, filter is enabled by default
<>OTHERS:
    #Clock & internal temperature
    #LCD contrast adjustment
    #LCD backlight ON/OFF
    #Keypad tone ON/OFF

Here are some images, more images and videos will upload later.
Edward3121:
the noise
baof:
Cool !!!
HighVoltage:
Nice!

Are you planning to make this commercially available ?
thm_w:

--- Quote from: HighVoltage on June 22, 2021, 06:23:45 pm ---Nice!

Are you planning to make this commercially available ?

--- End quote ---

"JOY7307 is a new works of selena2211 ( Chinese nickname: 乐逍遥) (NOT me). "
"His chinese nickname is 乐逍遥, and english nickname is selena2211. And some othe works, such as AC Noise AMP, Low EMF Scanner, Chiron 7120A Series(LTZ1000/LM399*4), Mini 10V Ref(LTZ1000), Standard Resistance Box are also available."
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