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EASY-ROTOR-CONTROL M V2.2 Instructions

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Tannenstr. 16 Page 11 of 44 email : erc@schmidt-alba.de

86836 Untermeitingen / Germany

This document is for the user only. Any publishing (printed or in electronic form) is not allowed.

2.2 Assembly of RS232 cable

Materials needed:

- Cable with 3.5mm Stereo phone-jack

- DSUB-connector 9 pole female

- DSUB-case for 9 pole

Pinning of DSUB seen from the connector-frontside

As the delivered cables differ with their colours, it has to be measured which of the inner cables is

connected to what contact of the phone-jack. Alternatively to the 3-wire cable a 2-wire cable with

shielding can be delivered. For this kind of cables the both shielding have to be twisted together. The

shielding is representing GND.

GND: inner contact of the phone-jack : to PIN 5 of the D-SUB

RXD: middle contact of the phone-jack : to PIN 2 of the DSUB

TXD: tip-contact of the phone-jack : to PIN 3 of the DSUB

NOTE: If you use the ERC-M in MASTER-SLAVE-mode over RS232, the pins for RXD and

TXD must be crossed for the Master-ERC-M: TXD to Pin 2 and RXD to Pin3 of the D-SUB.

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