FIELD SERVICE BULLETIN
cnMatrix TX Switches
Device connectivity issue
|Download the PDF version||Application||Global|
|Effective Date||February 1, 2023|
|BULLETIN TYPE||SEVERITY RECOMMENDATION|
|Warranty Service||High – Perform immediately|
|Informational||Medium – Perform at next scheduled maintenance|
|Customer Specific||X||Low – Perform when system exhibits symptoms|
Subject: cnMatrix TX switches susceptible to unexpected behavior when devices that require low voltage passive PoE are connected.
Software/Configuration AFFECTED: cnMatrix TX 2K and TX 1K switches
Sympton: This applies to cnMatrix TX switch access ports that are connected to devices that use low voltage (24V) passive PoE. In some cases, the following symptoms can be seen.
- Devices may not power up or can lose connectivity and
- When disabling the PoE to the affected devices, the management interface will indicate that power is disabled, however the device will remain powered on.
- Reported power draw is inaccurate.
48V/54V passive PoE.