Serial Cables And Adaptors - Equinox Systems PPM3 MK2 User Manual

3.6 Serial Cables and adaptors

The programmer is supplied with the following PC Serial Cables / Adaptors:
1. 9-way D (female) to 9-way D (Male) Serial Cable
This cable should be connected between the 9-way D connector on the programmer and a spare 9-
way RS-232 COM port on your PC.
2. 9-way D (female) to 25-way D (Female) adaptor
If your PC has a 25-way D connector, you will need to plug the 9-25way adaptor onto the end of
the 9-9 way Serial Cable as shown in the diagram below.
3.7 RS-232 Serial Cable Specification
The serial cable supplied with the programmer is approximately 2m in length. If you wish to make your
own longer cable, please ensure that you connect all 9 pins at each end in a straight-through pin-to-
pin fashion. See fig. 3.7 for the pin-out specifications. The programmer features an ESD protected full
RS-232 specification driver chipset and so should operate reliably when driving serial cables up to
10m in length. However, it is recommended to keep the serial cable as short as possible to enhance
EMI immunity and reduce EMI emissions.
Important note:
The programmer uses ALL of the NINE pins of the COM port for different purposes. It is therefore
imperative that the cable used to connect between the programmer and the PC COM port has all
NINE cables connected. Failure to do this will result in the programmer not operating correctly.
54 PPM3 MKII Programmer - User Guide - V1.04 - 10
th
May 2008