• Overview
• Null Modem Jumper
• Receivers
  • MC-RX1
  • MC-RX2
• Transmitters
  • MC-TX1
  • MC-TX2

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Overview

MaxColor Transmitters and Receivers have a null modem jumper on the bottom of the unit that flips the transmit and receive pins on the RS232 port.

The nature of RS232 is that there is always a 50% chance that you have the correct cable. By flipping the jumper, to the alternate position, you ALWAYS have the correct cable.

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Null Modem Jumper

The null modem jumper on MaxColor devices is a 2x3 rectangle of pins. There are two valid positions for the null modem jumper, regardless of orientation:

One position is straight-through, one position is crossover. The orientation on the null modem jumper may be different on each device.

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Receivers

MC-RX1

 

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MX-RX2

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Transmitters

MC-TX1

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MC-TX2