1. Introduction
This manual provides detailed instructions for the safe and effective operation of your Jaycar Digitech QC1938 100MHz Digital Oscilloscope. Please read this manual thoroughly before using the device to ensure proper setup, operation, and maintenance. Retain this manual for future reference.
2. Consignes de sécurité
Observe the following safety precautions to prevent injury and avoid damage to the instrument or any products connected to it.
- Source d'alimentation : Connect the oscilloscope only to the power source specified in this manual.
- Mise à la terre : Assurez-vous que l'instrument est correctement mis à la terre afin d'éviter tout risque d'électrocution.
- Sondes: Use only probes supplied or recommended by the manufacturer. Ensure probes are rated for the voltage étant mesuré.
- Ventilation: Ne pas obstruer les ouvertures de ventilation. Assurer une circulation d'air adéquate autour de l'instrument.
- Environnement: Operate the oscilloscope in a dry environment. Avoid exposure to moisture, dust, or extreme temperatures.
- Entretien: Confiez toute réparation à un technicien qualifié. N'essayez pas de réparer l'instrument vous-même.
3. Contenu du colis
Vérifiez que tous les éléments énumérés ci-dessous sont présents dans votre colis :
- Jaycar Digitech QC1938 Digital Oscilloscope
- 10:1 Passive Probe with 1.5m lead
- 2 x BNC to Clip Test Leads
- Câble USB
- Câble d'alimentation
- Manuel de l'utilisateur (ce document)
4. Produit terminéview
The Jaycar Digitech QC1938 is a 100MHz Digital Oscilloscope designed for precise electronic measurements. It features a 7-inch color LCD screen, two independent channels, and a built-in waveform generator.
Caractéristiques principales :
- 7-inch TFT color LCD screen with 800 x 480 pixel resolution
- Two independent input channels
- 100MHz bandwidth and 1GSa/s samptaux de lingue
- 8M memory depth (single channel)
- Integrated 25MHz waveform generator (Sine, Square, Ramp, Exponential, Noise, DC)
- Auto scale function for automatic sine and square wave detection
- 14 trigger modes including Edge, Pulse, Video, Slope, Overtime, Window, Pattern, Interval, Under Amp, UART, LIN, CAN, SPI, and IIC
- 5 serial protocol triggers and decodes: RS232/UART, I2C, SPI, CAN, and LIN
- Two 3-digit digital voltmeters and a 6-digit hardware frequency indicator
- 32 types of auto measurements with real-time statistics
- USB Host/Device interface for computer control and data storage
5. Installation
5.1 Connexion d'alimentation
- Connect the supplied power lead to the power input on the rear panel of the oscilloscope.
- Plug the other end of the power lead into a grounded AC power outlet.
- Appuyez sur le bouton d'alimentation situé sur le panneau avant pour allumer l'oscilloscope.
5.2 Connexion de la sonde
- Connect the BNC connector of the passive probe to either Channel 1 (CH1) or Channel 2 (CH2) input on the front panel.
- Attach the ground clip of the probe to the circuit's ground point.
- Connect the probe tip to the test point in your circuit.
- Ensure the probe's attenuation setting (e.g., 1X or 10X) matches the setting on the oscilloscope for accurate readings.
6. Mode d'emploi
6.1 Fonctionnement de base
- Auto Scale: Press the 'AUTO SET' button to automatically adjust vertical, horizontal, and trigger settings for a stable waveform display. This function detects sine and square waves automatically.
- Commandes verticales (VOLTS/DIV, POSITION) : Use the VOLTS/DIV knobs to adjust the vertical scale (voltage per division) for each channel. The POSITION knobs shift the waveform vertically.
- Commandes horizontales (SEC/DIV, POSITION) : Use the SEC/DIV knob to adjust the horizontal scale (time per division). The horizontal POSITION knob shifts the waveform horizontally.
- Niveau de declenchement: Adjust the 'TRIGGER LEVEL' knob to set the voltage level at which the oscilloscope captures a waveform.
6.2 fonctions avancées
- Générateur de forme d'onde : Access the waveform generator menu to select and configure output waveforms such as Sine, Square, Ramp, Exponential, Noise, and DC. Connect the 'WAVE GEN' output to your circuit.
- Modes de déclenchement : Utilize the 14 available trigger modes (Edge, Pulse, Video, Slope, Overtime, Window, Pattern, Interval, Under Amp, UART, LIN, CAN, SPI, IIC) to capture specific events. Select modes via the 'TRIGGER' menu.
- Décodage du protocole série : The oscilloscope supports decoding for RS232/UART, I2C, SPI, CAN, and LIN protocols. Configure these settings in the 'DECODE' menu to view decoded data.
- Mesures: The device offers 32 types of automatic measurements with real-time statistics (maximum, minimum, standard deviation, etc.). Access these via the 'MEASURE' menu.
- Connectivité USB : Connect a USB thumb drive to the USB Host port to save oscilloscope setups, waveforms, reference waveforms, CSV files, and images. The USB Device port allows for remote control from a computer using SCPI commands.
7. Entretien
7.1 Nettoyage
To clean the instrument, use a soft cloth dampened with a mild detergent solution. Do not use abrasive cleaners or solvents that could damage the casing or screen. Ensure the device is powered off and unplugged before cleaning.
7.2 Stockage
When not in use, store the oscilloscope in a dry, dust-free environment away from direct sunlight and extreme temperatures. Use the original packaging or a suitable case for protection during transport.
8. Dépannage
If you encounter issues with your oscilloscope, refer to the following common problems and solutions:
| Problème | Cause possible | Solution |
|---|---|---|
| Pas de courant | Power cable not connected; Power outlet faulty; Power button not pressed | Check power cable connection; Test power outlet; Press power button firmly |
| Aucune forme d'onde affichée | Probe not connected; Incorrect input channel selected; Vertical/Horizontal scale incorrect; Trigger level too high/low | Connect probe to CH1/CH2; Select correct channel; Adjust VOLTS/DIV and SEC/DIV; Adjust TRIGGER LEVEL or use 'AUTO SET' |
| Forme d'onde instable | Incorrect trigger settings; No stable trigger source | Adjust trigger level; Select appropriate trigger mode; Ensure a stable signal source |
| Clé USB non reconnue | USB drive formatted incorrectly; Drive not fully inserted | Ensure USB drive is FAT32 formatted; Re-insert USB drive firmly |
Si le problème persiste après avoir essayé ces solutions, veuillez contacter le service client.
9. Spécifications
| Paramètre | Spécification |
|---|---|
| Afficher | Écran LCD couleur TFT de 7 pouces |
| Résolution | 800 x 480 pixels |
| Type d'affichage | Point, Vector |
| Chaînes | 2 |
| Bande passante | 100 MHz |
| SampTaux de ling | Jusqu'à 1 GSa/s |
| Profondeur de la mémoire | 8M (single channel) |
| Gamme verticale | 2 mV / div à 10 V / div |
| Résolution verticale | 8 bits |
| Générateur de forme d'onde | Sinus, Carré, Ramp, Exponential, Noise, DC |
| Interface | USB Host, USB Device |
| Poids | 1.9 kg |
| Dimensions (L x H x l) | 318 mm x 150 mm x 110 mm |
10. Garantie et assistance
Pour toute information relative à la garantie et pour obtenir une assistance technique, veuillez consulter la documentation fournie lors de votre achat ou contacter votre revendeur. Conservez votre preuve d'achat pour toute réclamation au titre de la garantie.
