# Characteristics of the connector programming

**URL:** <https://forums.digi.com/t/characteristics-of-the-connector-programming/8917>\
**Category:** Rabbit\
**Created:** [July 18, 2008, 4:05pm UTC](https://forums.digi.com/t/characteristics-of-the-connector-programming/8917 "2008-07-18T16:05:50Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![jgv276](https://avatars.discourse-cdn.com/v4/letter/j/ee59a6/32.png) [@jgv276](https://forums.digi.com/u/jgv276)\
**Post date:** [July 18, 2008, 4:05pm UTC](https://forums.digi.com/t/characteristics-of-the-connector-programming/8917/1 "2008-07-18T16:05:50Z")

</div>

Hello

I need to make an external cable programming for the rabbit and wanted to know if someone has the characteristics of the connector programming for rabbit of the line 3000. Dimensions, spacing of pins, etc.

Thanks in advance

---

<div class="post-metadata">

**Author:** ![bsprouse](https://avatars.discourse-cdn.com/v4/letter/b/ecd19e/32.png) [@bsprouse](https://forums.digi.com/u/bsprouse)\
**Post date:** [July 18, 2008, 9:48pm UTC](https://forums.digi.com/t/characteristics-of-the-connector-programming/8917/2 "2008-07-18T21:48:38Z")

</div>

The current shipping 3000 cores use a 1.27mm pitch 2x5 header for connecting to the programming cable. Older cores may use a 2mm pitch 2x5 header. The current programming cable uses a standard 1.27mm pitch, 2x5 female IDC connector. These are a common part that you can get from many manufacturers. You could also use a PCB mount 1.27mm pitch 2x5 female socket to connect to the core. The core expects digital level signal, not RS-232 levels, so the programming cable has an RS-232 driver/receiver chip built into it.

To see a schematic of the programming cable, click this link: [Programming Cable Schematic](http://www.rabbit.com/documentation/schemat/090-0128.pdf)

---

<div class="post-metadata">

**Author:** ![jgv276](https://avatars.discourse-cdn.com/v4/letter/j/ee59a6/32.png) [@jgv276](https://forums.digi.com/u/jgv276)\
**Post date:** [July 21, 2008, 10:37pm UTC](https://forums.digi.com/t/characteristics-of-the-connector-programming/8917/3 "2008-07-21T22:37:40Z")

</div>

I am grateful for the assistance. These data will be very useful for me