Field Service Bulletin

PMP450 Subscriber Modules Lose Factory Calibration Data.

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Document Number:

FSB9081

Revision:

001v000

Application:

Global

Effective Date:

August 24, 2020

Expiry Date:

N/A

Bulletin Type:

Warranty Service

Informational

Customer Specific

Severity Recommendation:

High – Perform immediately

Medium – Perform at next scheduled maintenance

Low – Perform when system exhibits symptoms

Subject:

PMP450 Subscriber Modules Lose Factory Calibration Data.

Model / System Affected:

All PMP450 Subscriber Modules running firmware versions older than 16.1.1.1

Symptom:

Customers are reporting a symptom on the PMP450 subscribers GUI -> Home -> General Status – “Radio not calibrated” and the SM stops operating.

In all cases, the “Radio not calibrated” symptoms occurred on SMs being managed by cnMaestro and running firmware versions older than 16.1.1.1. These units are susceptible to factory calibration data being corrupted due to repeated configuration pushes from cnMaestro.

Current Status of Investigation:

The problem has been determined to be caused by a software defect and it has been corrected in the official PMP450x software release of 16.1.1.1 or later.

Resolution:

If you have PMP450 SM running software older than 16.1.1.1, they should be upgraded to 16.1.1.1 or beyond to avoid this failure.

Upgrade path: 13.4.1 -> 14.1.1 -> 15.1.x -> 15.2.1 -> 16.1.1.1 or 16.2.x(latest software release at time of FSB issue is16.2.2) If you have a PMP450 device that is exhibiting the “Radio not calibrated” message, please open a support ticket with Cambium Technical Support to RMA the unit.

If you have questions or concerns, please contact Cambium Technical Support at the following: https://www.cambiumnetworks.com/support/contact-support/

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