11
Complete technical specifications refer to the tenth chapter.
2.2 main functions
2.2.1 test frequency
1kHz
，
frequency stability
：
20ppm
2.2.2 Range
JK2520C:6 range test
，
30mΩ~30kΩ
。
JK2520B: 4 range test
，
30mΩ~30Ω
。
Range automatic, manual and nominal.
Range nominal
（
Jinko new noun definition
）：
the instrument automatically selects the
best range based on the nominal value.
2.2.3 Test speed
The instrument is divided into four speeds: slow speed, medium speed, high speed
and high speed.
All channels are opened and manual range mode:
Slow: 1 times / sec.
Fast: 10 times / sec.
Medium speed: 30 times / sec.
High speed: 145 times / sec (JK2520C)
2.2.4 trigger mode
Internal, external, manual and remote triggers
.
2.2.5 Basic accuracy
JK2520C:
resistance
：
0.2% voltage
：
0.2%
JK2520B:
resistance
：
0.5%
voltage
：
0.05%
2.2.6 Maximum reading
resistance
：
33,000
JK2520C
：
voltage
：
120.000
JK2520B
：
voltage
：
59.99
2.2.7 Calibration function
Full range short circuit "0": eliminate the influence of lead resistance.
2.2.8 Comparator function (sorting function)
The instrument has sorting function.
RHI/RNG/RLO output.
VHI/VNG/VLO output.
Comparison mode:
