Tripp Lite Omni Pro 450 serial cable diode?

Started by Aristarco, Jan 30, 2019, 20:05

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According to the Omni Pro 450 (675) cable pinout, there's a diode going from pin 7 at the female DB9 (PC side) to pin 2 of male DB9 (UPS side). Is the anode connected to pin 7 and cathode to pin 2? Or vice versa?

Thank you in advance!