The popular handheld oscilloscope with widened bandwidth for signals research, their comparison on different channels and the electrical parameters measurement. Application: design and debug, circuit function test, education, technical training, maintenance testing.
Low frequency response (AD coupling, -3dB): ≥5Hz (at the BNC).
Rise time (typical one at the BNC):≤5.8ns
DC gain accuracy: ±3%
DC measurement accuracy (average value sampling mode):The voltage difference (ΔV) between any two points on the waveform after averaging the captured waveforms more than 16: ±(5% reading+0.05divisions)
DC coupling 1div (DC~full bandwidth)
AC coupling Same as the DC coupling when it is equal to or larger than 50Hz
Triggering level range ±6 divisions from the screen center
Triggering level accuracy (typical) which is applicable to the signal with rise and fall time equal to or longer than 20ns ±0.3 divisions
Trigger displacement 655 divisions for pre-triggering and 4 divisions for post-triggering.
Trigger Holdoff range 100ns~10s
Make a 50% level setting (Typical). Operation with the input signal frequency equal to or larger than 50Hz.
Trigger sensitivity (Video triggering and typical mode) 2 divisions of peak-to-peak value
Signal system and line/field frequency (Video triggering mode); Support the NTSC, PAL and SECAM broadcasting systems of any field or line frequency
Up to 6MHz (DC)
Up to full bandwidth (DC)
Input Impedance: 10MΩ. Max. Input Voltage: 1000V (DC or AC peak-to-peak value)
Input Impedance: 10MΩ. Max. Input Voltage: 750V (AC, virtual value). Frequency range: from 40Hz to 400Hz. Display: Virtual value of the sine wave
Direct Current (DC)
Alternating Current (AC)
Voltage reading: 0 V~1.5 V
There is a beep sound when the on-resistance is less than 50Ω.
High voltage measurement testing are not allowed over 300 volts
Even when you can read in a probe 600V PK CAT I. The Aktakom, Owon or Rigol oscilloscopes does not support more than 300V RMS or 400V PK. For higher voltage please contact us to request a special device.
The measured voltage amplitude value is 10 times greater or smaller than the actual value
Check whether the channel attenuation coefficient and the attenuation coefficient of the probe used is match. Up
When changing the horizontal sweep on the digital oscilloscope at different horizontal points observed inexplicable change in the form of the same signal, why is this happening?
In fact, this is not a problem.
Just keep in mind that you're using a digital oscilloscope, which digitizes the signal with different sampling rates depending on the selected horizontal sweep, and then connects the digitized points with strait line while restoring the real shape of the signal.
Your first screen shows that you are measuring voltage 50 Hz with the 10 ms / div sweep and a sampling frequency of 20 kHz Ks/s
One signal period (20 ms), digitized in this mode, 20E-03 (sec) * 20E03 (1/sec) = 400 points. This is enough to properly restore and interpolate a sine wave of 50 Hz (i.e. in a period of 20 ms).
Normal display, with a sweep 10 ms / div:
Distortion of the same signal at 10 s / div sweep
Your second screen is set to sweep 10 sec / div, and sample rate on a sweep turned to 20 samples per second (20 Sa / s). I.e. one signal period 20 ms had: 20E-03 (sec) * 20 (1/sec) = 0.4 points. That means that to restore (to interpolate the points) a sine wave with less than one point in time is impossible, so you get this mess (known as "aliasing" or a false frequency) formed by the beats of the measured frequency and sampling frequency.
In order to correctly install a data collection in a digital oscilloscope one should follow a simple rule - the sampling rate must be at least 5-10 times higher than the frequency signal, in that case you will not have the issues that we just discussed.
This applies to all digital oscilloscopes and in no way connected to any particular make or model of oscilloscope or its probes.
There is wave form displayed, but it is not stable
Check whether the Source item in the TRIG MODE menu is in conformity with the signal channel used in the practical application.
Check on the trigger Type item: The common signal chooses the Edge trigger mode for Type and the video signal the Video. Only if a proper trigger mode is applied, the wave form can be displayed steadily.
Try to change the trigger coupling into the high frequency suppress and the low frequency suppress to smooth the high frequency or low frequency noise triggered by the interference.
Escopiometro clásico: Osciloscopio digital con almacenamiento (DSO) + Multímetro Digital (DMM).
DSO: Dos canales. Ancho de banda de 60 MHz. Frecuencia de muestreo (en tiempo real) de 250MS/s. Máxima longitud de registro 6 mil puntos por cada canal. Veinte mediciones automáticas. Disparador de borde, de video y matemático. FFT. Detección de picos y promedio.
DMM: 3 ¾ dígitos, VCD, VCA, CC, AC, resistencia, capacitancia, testeo de diodos, de encendido y apagado.
Monitor LCD de 3.8'' a color, pantalla TFT de 320 × 240 píxeles. Dimensiones: 7.1” x 4.5” x 1.6” / 180mm x 115mm x 40mm. Peso: 22.8 oz / 645 g.