Tonghui TH2840 Series - Connection Modes of Test Terminals; Test Speed (Frequency>=10 Khz); Average; Display Digit

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8.1.8 Connection modes of test terminals
TH2840X adopts 4-terminal test method.
Hcur: current sample high terminal
Lcur: Current sample low terminal
Hpot：voltage sample high terminal
Lpot: Voltage sample low terminal
8.1.9 Test speed (Frequency>=10kHz)
Fast+：about 1800 times/s（0.55ms/time）
Fast：about 300 times/s（3.3ms/time）
Medium：about 11 times/s（90ms/time）
Slow：about 4times/s（240ms/time）
The fast+, fast and middle speed will be slow down when frequency <10kHz.
8.1.10 Average
255 programmable
8.1.11 Display digit
6 digits, max. displayed digit: 999999
8.2 Test signal
8.2.1 Test signal frequency
Test signal is sine wave, accuracy：0.01％
Frequency range：
20Hz～500kHz（TH2840A/TH2840AX/TH2840NX）
20Hz～2MHz（TH2840B/TH2840BX）
Min. resolution：1mHz
8.2.2 Signal mode
Normal: When testing, on measurement display page, voltage across test terminals may be smaller
than preset voltage.
Constant level: The auto adjustment of internal level makes the voltage of DUT accordant with
preset voltage.