Maynuo M-131 TTL to RS-232C Adapter

Product Code: M-131

Professional RS-232 Communication Interface The Maynuo M-131 RS-232C Adapter enables PC-based control and data logging for Maynuo electronic loads and programmable power supplies. This essential interface cable converts TTL voltage levels from the instrument's DB9 connector to standard RS-232 levels required for computer serial communication. Key Technical Specifications Parameter Value Input (Instrument Side) TTL levels (+5V logic) Output (PC Side) RS-232 levels (±12V) Interface DB9 male to DB9 female Isolation Galvanic isolation included Status LEDs TX/RX activity indicators Cable Length 1.2 metres Wiring Quick-Start Important: Never connect DB9 instrument port directly to PC RS-232 without the M-131 adapter. TTL voltage levels are incompatible with RS-232 and may cause damage. The M-131 provides essential voltage level conversion between your Maynuo instrument's TTL signals and your computer's RS-232 serial port: Instrument Side (TTL): M-131 Adapter: PC Side (RS-232): Pin 1: +5V ————————————————→ Level Shifter ————————————→ Pin 1: DCD Pin 2: TXD ———————————————→ MAX232 IC ————————————————→ Pin 2: RXD Pin 3: RXD ←————————————— Signal Isolation ←————————— Pin 3: TXD Pin 5: GND ←————————————— Ground Reference —————————— Pin 5: GND Compatible Instruments Works with all Maynuo electronic loads and programmable power supplies featuring the DB9 TTL communication port, including: M97 Series Electronic Loads (M9711, M9712, M9713, M9714, M9715, M9716, M9717, M9718) M98 Series LED Electronic Loads (M9811, M9812, M9812B) M88 Series Programmable Power Supplies (M8811, M8812, M8813, M8831) High-power M983X series loads Product connection diagram placeholder Software Integration Use with Maynuo's free PC software for: Remote instrument control Automated test sequences Data logging and analysis Custom SCPI command programming Note: Alternative M-132 (RS-485) and M-133 (USB) adapters are available for different communication requirements.