Menu
WhatsApp Chat Viewer

Hanmatek Dos1102 Manual |link|

Upload your exported WhatsApp conversation and instantly view, search, and filter messages and media. All processed locally in your browser for complete privacy.

Supports .txt files or .zip files with media exported from WhatsApp (max 5 GB)
100% Private: All processing happens in your browser
Need help? View our step-by-step tutorial

Your WhatsApp Conversations Made Accessible

WhatsApp Chat Viewer is a powerful, free tool that lets you view and analyze your exported WhatsApp conversations. With support for both text and media files, our viewer provides a familiar chat interface with powerful search and filtering capabilities. Completely private and secure with all processing done locally in your browser.

Media Support

View images, videos and documents from your WhatsApp exports

Advanced Search

Easily find messages by text, sender or date

Familiar Interface

Experience your chats with the same look and feel as WhatsApp

Print & Export

Save or print your conversations for archiving

Proper calibration ensures that your measurements are accurate and that the oscilloscope does not introduce distortion. Step 1: Connecting the Probes Connect your BNC probe to .

Select your source channel (CH1 or CH2) using the menu soft-keys next to the screen.

1 GSa/s (1 billion samples per second). Display: 7-inch color TFT-LCD. Vertical Sensitivity: Time Base Range:

Moves the entire waveform up or down on the screen. 3. Horizontal System (Time Base Controls) This zone controls the horizontal axis (Time).

Triggers tell the oscilloscope exactly when to start drawing the signal. The DOS1102 features three foundational trigger modes:

: Setting vertical/horizontal systems and trigger settings.

Set Source to (or whichever channel holds your primary signal).

Keep your firmware updated and utilize system tools to handle basic errors.

So open the cover and let the screen glow. The manual is not just instructions; it’s a small atlas to the invisible. Follow its maps, tune its colors, and you’ll find that each waveform is a sentence, and every measurement, a sentence understood.