# Baud rate is set correctly but messages from iGrade are still garbled.

<span dir="ltr" style="font-size: 14pt; font-family: Helvetica, sans-serif; color: rgb(0, 0, 0); font-weight: 400;">**Symptoms**:</span>

<span style="font-family: Helvetica,sans-serif;"><span dir="ltr" style="font-size: 14pt; color: rgb(0, 0, 0); font-weight: 300;">Baud rates are set correctly on both T3RRA software and in iGrade. The T3RRA software is not receiving GPS and the GPS diagnostics window is showing an unintelligible data stream.</span></span>

<span style="font-family: Helvetica,sans-serif;"><span dir="ltr" style="font-size: 14pt; color: rgb(0, 0, 0); font-weight: 300;">![](https://docs.t3rra.com/uploads/images/gallery/2025-03/scaled-1680-/fc5w5a2oknysdhonlqxwgqe2-gyydhbg7w-png.png) </span></span>

<span style="font-family: Helvetica,sans-serif;"><span style="font-size: 14pt; color: rgb(0, 0, 0); font-weight: 400;">**Causes**:</span></span>

<span style="font-family: Helvetica,sans-serif;"><span style="font-size: 14pt; color: rgb(0, 0, 0); font-weight: 300;">The serial connection is not properly grounded. Pin 5 is disconnected or connected to the wrong pin at the other end of the cable. </span></span>

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<span style="font-family: Helvetica,sans-serif;"><span style="font-size: 14pt; color: rgb(0, 0, 0); font-weight: 400;">**Solutions**:</span></span>

<span style="font-family: Helvetica,sans-serif;"><span style="font-size: 14pt; color: rgb(0, 0, 0); font-weight: 300;">Carefully check the remote control cable and the iGrade harness. Ensure that the ground wire is properly grounded. In at least one case we have had a user report that an additional grounding wire was required as shown below.</span></span>

<span dir="ltr" style="font-size: 14pt; font-family: Helvetica, sans-serif; color: rgb(0, 0, 0); font-weight: 300;">![](https://docs.t3rra.com/uploads/images/gallery/2025-03/scaled-1680-/rwy05ria6tepkpy-hknm-3ykumeeezy8tw-png.png)</span>