Distance problem - MC13213-SRB

[admin]

Hi, I'm working with a Zebra 2411-SM module, which is equipped with a 68HCS908GT60 MCU and with a MC13193 transceiver, and with codebase SMAC.

I've write my application using a MC13213-SRB and I've ported the firmware on the Zebra. Initially it didn't work, but when I set the RXTEN signal on the right pin of the MCU, it start to transmit.

Now I can transmit data, but only in a very short range.

I suppose that there is the same problem with antenna and LNA, and my firmware doesn't activate this elements because they are on the wrong pin of the MCU. I've tried different port but with the same result.

Can anyone help me?

I apologize for my English is not perfect and I hope that my explanation of the problem was clear.

Thanks!

Message Edited by NLFSJ on 2008-09-24 01:32 PM

[admin]

Thanks for your help, I've solved my problem, there were some pin that must be set correctly, and they are: antenna, LNA, PA.

Now it works for a good range.

[UK_CF_FAE]

Hi Mar82,

Sentec offer very good technical support for their Zebra products.

The problem is that the hardware you developed the code on, 1321xSRB is a little different from the schematic used in the Sentec Zebra and so I would expect some differences.

Did you check with Sentec if they offer a SMAC application that you could use as a starting point? Alternatively, your approach with modifying the code to correctly run on the 2411 is the right one, and you just have a little more work to do.

We'd need considerable more information from you to offer much more support.

good luck

Mark