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What is Flex?

Flex is a licensing system that enables you to add extra features to your vbSeries instrument. Flex features are normally only available on higher-end models, which means you can now customize your instrument to suit your requirements.

EG: You might use your vb5 instrument mainly for route-based data collection but have an occasional need to perform balancing jobs. Flex licensing means you can now purchase and unlock the balancing feature for your vb5, whereas normally this functionality would only be available on a vb7 or vb8.

How do I get a Flex feature?

If your instrument supports a Flex feature:

  1. You will need to contact your local sales representative to order the feature(s) you require. Ensure you have your instrument serial number and the 20-character code stored under 0-Options > 4-Memory & System.
  2. Commtest Support will email you a small encrypted file containing the unlock information for the functionality you have purchased.
  3. You can then open Ascent and apply the unlock code to enable the feature.


Flex unlock files are instrument-specific so cannot be applied to another instrument.

Flex is only available with instruments running Ascent 2013 firmware.

Some older instruments are not currently set up to support Flex features. To check whether your instrument is currently Flex capable, press Options > Memory & System. Contact Commtest Support if your instrument is not currently configured to support Flex features.