: Users can manually input text or hex code to test how the printer renders characters and symbols. NV Logo Downloads
: Supports testing via USB, Serial (COM), Parallel (LPT), and Ethernet (LAN) interfaces.
// 2. Center Align (ESC a n) $buffer .= chr(27) . chr(97) . chr(1);
The V3.2 test prints a series of repeating patterns:
Switch the software interface between English and Chinese.
// 4. Reset to Left Align $buffer .= chr(27) . chr(97) . chr(0);
: Use the "Print" or "Self Test" buttons to verify the data link. ⚠️ Security and Safety Note