SPECIFICATIONS

Brand Name: NONE

Condition: New

High-concerned chemical: none

Origin: Mainland China

Package: SMD

Type: Module

Instruction Manual Link: https://pan.baidu.com/s/1HFOtZHDBuRzHdphSjDaneg?pwd=9gk2 Extract Code: 9gk2 After copying this content to open the Baidu.com Mobile App, the operation is more convenient Oh!

Compared with the original DSO138, the size is smaller, more powerful, upgraded a calibration function, improve the test parameters, support the interface directly update the firmware.

The original DSO138 in 10 times the highest probe test 400VPP, can not directly test 220V mains voltage

The new FNIRSI 138pro can test up to 800VPP at 10x probe, equivalent to 280V AC.

Maximum real-time sampling rate: 1Msps

Precision: 12Bit

Sampling buffer depth: 1024 bytes

Analog bandwidth: 0 - 200KHz

Vertical sensitivity: 10mV/Div - 5V/Div (in 1-2-5 increments)

Vertical displacement adjustable with indication

Input impedance: 1MΩ

Maximum input voltage: 50Vpp (1:1 probe), 400Vpp (10:1 probe)

Coupling methods including DC/AC/GND

Horizontal time base range: 10μs/Div - 50s/Div (in 1-2-5 increments)

Auto, normal and single trigger modes for easy capture of instantaneous waveforms

Rising or falling edge trigger available

Adjustable trigger level position with indication

Observation of waveforms before triggering (negative delay)

Waveform display can be frozen at any time (HOLD function)

Equipped with 1KHz / 3.3V square wave test signal source.

Digital display of waveform parameters, including frequency, period, pulse width, duty cycle, maximum value, minimum value, average value, peak-to-peak value and RMS value.

Save/call out the waveform, the waveform will not disappear when the power is turned off.

Method to turn on/off the waveform parameter display: place the cursor at the time base position and long press [OK] key.

Method to save waveform: press [SEL] and [+] key at the same time.

To call up the saved waveform: press [SEL] and [-] at the same time.

To enter the test mode: hold down the [OK] and then press the [RESET] key, if you see the LED flashing rapidly, it means that the PB or PC port of the microcontroller (these ports contain the wires connected to the LCD) has a short circuit, which needs to be removed after finding out; if you see the LED flashing with a cycle of about 4 seconds, you can use a voltmeter to find out possible open circuits in the connecting wires connected to the microcontroller port, please refer to the instruction manual for details. Please refer to the manual for specific methods.