Invalid Marker7 Error Prevents WLAN Signal Generation in RFSG

Updated Sep 19, 2025

Reported In

Hardware

  • PXIe-5831

Issue Details

When trying to use gRPC to generate a WLAN signal with RFSG, the program fails during the start of signal output and following message occurs. CW (Continuous Wave) and NR5G (5G New Radio) NR5G signals work fine, but WLAN does not. 

 

Requested Value: marker7
Possible Values: "
debug_error_string = "UNKNOWN:Error received from peer {grpc_message:"IVI: (Hex 0xBFFA0010) Invalid value for parameter or property.\n\nRequested Value: marker7\nPossible Values: ", grpc_status:2, created_time:"2025-06-24T01:19:55.8782345+00:00"}" >]

Solution

The problem can be resolved by adding idle time to the waveform, which ensures proper marker alignment and allows the RFSG to process the signal correctly.

Additional Information

This issue occurs because WLAN waveforms may have tighter marker alignment requirements compared to CW or NR5G. Adding idle time helps the RFSG align markers correctly during signal generation.

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