Introduction
This guide explains how to set up PCTEL scanner channels and troubleshoot missing data during walk tests. Use it to confirm your scanner is configured correctly and to identify common causes of data gaps in the field.
Issue description
Users may see missing or incomplete data during walk tests, or may need to configure scanner channels before collecting measurements. In most cases, the issue is related to scanner technology options, channel bandwidth settings, CINR conditions, interference, or an excessive number of channels or PCIs.
Signs
- Scanner channels do not return expected measurements
- Walk test data appears incomplete or has gaps
- Some channels are not visible in the measurements view
- CINR values are low or unstable
- Data collection becomes unreliable in areas with interference or many channels or PCIs
Basic troubleshooting steps
- Confirm the scanner has the required technology options enabled
- Verify the channel bandwidth is set correctly in the measurements column
- Check CINR levels during the walk test
- Look for nearby interference sources
- Review whether too many channels or PCIs are being monitored at once
Diagnostic tools/resources
- PCTEL application for data collection and review
- Scanner configuration screen
- Measurements column in the scanner interface
- Walk test logs and saved measurement files
Advanced troubleshooting steps
Step 1: Set up PCTEL scanner channels
Make sure the scanner includes the required technology options for the channels you want to measure. Then adjust the channel bandwidth in the measurements column so it matches the intended configuration. If the technology option is missing, the channel may not be available for measurement.
Step 2: Check CINR and field conditions
During the walk test, verify the CINR levels. Low CINR can cause missing or unreliable data. If CINR is poor, inspect the area for interference sources and reduce the number of channels or PCIs being monitored if possible.
Step 3: Reduce channel or PCI load
If the walk test includes too many channels or PCIs, simplify the configuration and test again. Monitoring fewer items can improve measurement stability and reduce missing data.
Step 4: Collect data for further review
If the issue continues, collect the walk test data using the PCTEL application. Save the files and share them with PCTEL Technical Support for further review and analysis.
Contact support
If you still see missing data after completing the steps above, contact PCTEL Technical Support and provide:
- A description of the issue
- The scanner model and software version
- The technology options enabled
- The walk test files collected in the PCTEL application
- Any notes about CINR, interference, or the number of channels or PCIs monitored
Conclusion
Correct scanner channel setup and stable walk test conditions are key to reliable measurements. If missing data persists, collect the data in the PCTEL application and send it to PCTEL Technical Support for further investigation.