Installation Manual

nanoBTS Installation Manual

Commission a nanoBTS

4. Click OK.

5. Click Start Test.

Note: The nanoBTS may not be able to correct the frequency error in one go. It may

be necessary to re-run this test a few times to get the error down to a

reasonable level.

4.4.2 Frequency Control

Frequency Control enables the user to make manual adjustments to the nanoBTS clock

frequency via the Frequency Control attribute, which is represented as a number of ppb

(parts per billion) from a nominal value. It also enables the user to view the Timing Bus

status.

1. Connect external frequency measuring equipment to the nanoBTS TIB Out port.

Note: The external frequency counter should be referenced to an accurate and

stable source.

Note: If the nanoBTS is used in a Multi-TRX configuration, then the TIB Out must

be disconnected from each nanoBTS in the chain prior to calibration and

reconnected afterwards.

2. Ensure that the new nanoBTS is selected in the BTS Status section, and then

click Action. The Configure BTS dialog is displayed.

3. Click Frequency Control. If the nanoBTS has been powered up for more than 24

hours the Frequency Control dialog is displayed.