Wireless Access

Well,  if grounding is bad, you would typically see random reboots or lockups (from ESD discharge or transient spikes). Also possibly you could expect Ethernet/PoE port damage (PHY failures) or a total device failure (broken AP and not just weak Wi-Fi).  A slow, progressive drop in RF output power while everything else keeps running is not a classic grounding symptom. Your 1–10 Ω reading is within standard limits (NEC, IEEE, Aruba all recommend <25 Ω, ideally <5 Ω). From my perspective, grounding alone is not a plausible root cause here.

Which types of AP are you using?  Check if you see some behaviors in Logs (either controller or central whichever ur using). Also, if they are PoE Powered, check if you have AP Voltage set right. Additional, check where you position the APs. Might be a chance that you have EMI Source close by (such as Carestream Power Supply or any XRay generator) because EMI could cause RF issues.

Hi,

thanks for your replay.

there is no reboot or physical damage. Im using online ups so no voltes issue.

AP is far from xray power generator. 

AP model is 505. Not sure about controller.

FW: 8.7.1.5.

Is there any solution. Can this repairable i mean get back correct RF signal.

thanks for your help.

Shahriar

Have you worked with HPE support team, and has the failing AP been submitted for root cause analysis?

Any extreme environmental conditions?

I agree that it seems unlikely that this is related to grounding issues.

Hi,

thanks for your replay.

there is no reboot or physical damage. Im using online ups so no voltes issue.

AP is far from xray power generator. 

AP model is 505. Not sure about controller.

FW: 8.7.1.5.

Is there any solution. Can this repairable i mean get back correct RF signal.

thanks for your help.

Shahriar

Well,  if grounding is bad, you would typically see random reboots or lockups (from ESD discharge or transient spikes). Also possibly you could expect Ethernet/PoE port damage (PHY failures) or a total device failure (broken AP and not just weak Wi-Fi).  A slow, progressive drop in RF output power while everything else keeps running is not a classic grounding symptom. Your 1–10 Ω reading is within standard limits (NEC, IEEE, Aruba all recommend <25 Ω, ideally <5 Ω). From my perspective, grounding alone is not a plausible root cause here.

Which types of AP are you using?  Check if you see some behaviors in Logs (either controller or central whichever ur using). Also, if they are PoE Powered, check if you have AP Voltage set right. Additional, check where you position the APs. Might be a chance that you have EMI Source close by (such as Carestream Power Supply or any XRay generator) because EMI could cause RF issues.

Have you worked with HPE support team, and has the failing AP been submitted for root cause analysis?

Any extreme environmental conditions?

I agree that it seems unlikely that this is related to grounding issues.

Hi,

thanks for your replay.

there is no reboot or physical damage. Im using online ups so no voltes issue.

AP is far from xray power generator. 

AP model is 505. Not sure about controller.

FW: 8.7.1.5.

Is there any solution. Can this repairable i mean get back correct RF signal.

thanks for your help.

Shahriar

Well,  if grounding is bad, you would typically see random reboots or lockups (from ESD discharge or transient spikes). Also possibly you could expect Ethernet/PoE port damage (PHY failures) or a total device failure (broken AP and not just weak Wi-Fi).  A slow, progressive drop in RF output power while everything else keeps running is not a classic grounding symptom. Your 1–10 Ω reading is within standard limits (NEC, IEEE, Aruba all recommend <25 Ω, ideally <5 Ω). From my perspective, grounding alone is not a plausible root cause here.

Which types of AP are you using?  Check if you see some behaviors in Logs (either controller or central whichever ur using). Also, if they are PoE Powered, check if you have AP Voltage set right. Additional, check where you position the APs. Might be a chance that you have EMI Source close by (such as Carestream Power Supply or any XRay generator) because EMI could cause RF issues.

Hi Onno,

There is no direct HP support in my region. no, there is no extreme environment condition. i can login to AP gui only. is it possible to fine anything there?

appreciate your further help.

Thanks,

Shahriar

Have you worked with HPE support team, and has the failing AP been submitted for root cause analysis?

Any extreme environmental conditions?

I agree that it seems unlikely that this is related to grounding issues.

Hi,

thanks for your replay.

there is no reboot or physical damage. Im using online ups so no voltes issue.

AP is far from xray power generator. 

AP model is 505. Not sure about controller.

FW: 8.7.1.5.

Is there any solution. Can this repairable i mean get back correct RF signal.

thanks for your help.

Shahriar

There is no need for grounding of indoor APs, and unless your physical environment is very uncommon/extreme, you should not experience the problems you're describing.

Assuming there was no channel and/or transmit power level change (what is the reported transmit power level?) , and the low power is consistently observed by different client devices, it seems likely that the hardware failed, and it should be replaced under warranty.

I'm unfamiliar with the "Carestream Focus 32 FPD" device. Is there an independent way to verify the (drop in) RF signal level?

Hi Onno,

There is no direct HP support in my region. no, there is no extreme environment condition. i can login to AP gui only. is it possible to fine anything there?

appreciate your further help.

Thanks,

Shahriar

Have you worked with HPE support team, and has the failing AP been submitted for root cause analysis?

Any extreme environmental conditions?

I agree that it seems unlikely that this is related to grounding issues.

Hi,

thanks for your replay.

there is no reboot or physical damage. Im using online ups so no voltes issue.

AP is far from xray power generator. 

AP model is 505. Not sure about controller.

FW: 8.7.1.5.

Is there any solution. Can this repairable i mean get back correct RF signal.

thanks for your help.

Shahriar

Well,  if grounding is bad, you would typically see random reboots or lockups (from ESD discharge or transient spikes). Also possibly you could expect Ethernet/PoE port damage (PHY failures) or a total device failure (broken AP and not just weak Wi-Fi).  A slow, progressive drop in RF output power while everything else keeps running is not a classic grounding symptom. Your 1–10 Ω reading is within standard limits (NEC, IEEE, Aruba all recommend <25 Ω, ideally <5 Ω). From my perspective, grounding alone is not a plausible root cause here.

Which types of AP are you using?  Check if you see some behaviors in Logs (either controller or central whichever ur using). Also, if they are PoE Powered, check if you have AP Voltage set right. Additional, check where you position the APs. Might be a chance that you have EMI Source close by (such as Carestream Power Supply or any XRay generator) because EMI could cause RF issues.

Thanks for the clarification. The Aruba AP is only serving the Carestream Focus 32 FPD as a client, and from the AP GUI it shows this single client with very poor signal strength and low speed. Could you please advise the best method to independently verify the RF signal level - for example, would using a Wi-Fi analyzer app on a laptop/phone or a spectrum tool be appropriate in this case?

Supplier forcing me to buy new AP even its still under warranty. they saying that AP got faulty due to bad grounding.. :( 

is there any log available in AP find out the root cause? i have only GUI access.

Thanks,

Shahriar 

There is no need for grounding of indoor APs, and unless your physical environment is very uncommon/extreme, you should not experience the problems you're describing.

Assuming there was no channel and/or transmit power level change (what is the reported transmit power level?) , and the low power is consistently observed by different client devices, it seems likely that the hardware failed, and it should be replaced under warranty.

I'm unfamiliar with the "Carestream Focus 32 FPD" device. Is there an independent way to verify the (drop in) RF signal level?

Hi Onno,

There is no direct HP support in my region. no, there is no extreme environment condition. i can login to AP gui only. is it possible to fine anything there?

appreciate your further help.

Thanks,

Shahriar

Have you worked with HPE support team, and has the failing AP been submitted for root cause analysis?

Any extreme environmental conditions?

I agree that it seems unlikely that this is related to grounding issues.

Hi,

thanks for your replay.

there is no reboot or physical damage. Im using online ups so no voltes issue.

AP is far from xray power generator. 

AP model is 505. Not sure about controller.

FW: 8.7.1.5.

Is there any solution. Can this repairable i mean get back correct RF signal.

thanks for your help.

Shahriar

Thanks for the clarification. The Aruba AP is only serving the Carestream Focus 32 FPD as a client, and from the AP GUI it shows this single client with very poor signal strength and low speed. Could you please advise the best method to independently verify the RF signal level - for example, would using a Wi-Fi analyzer app on a laptop/phone or a spectrum tool be appropriate in this case?

Supplier forcing me to buy new AP even its still under warranty. they saying that AP got faulty due to bad grounding.. :( 

is there any log available in AP find out the root cause? i have only GUI access.

Thanks,

Shahriar 

There is no need for grounding of indoor APs, and unless your physical environment is very uncommon/extreme, you should not experience the problems you're describing.

Assuming there was no channel and/or transmit power level change (what is the reported transmit power level?) , and the low power is consistently observed by different client devices, it seems likely that the hardware failed, and it should be replaced under warranty.

I'm unfamiliar with the "Carestream Focus 32 FPD" device. Is there an independent way to verify the (drop in) RF signal level?

Hi Onno,

There is no direct HP support in my region. no, there is no extreme environment condition. i can login to AP gui only. is it possible to fine anything there?

appreciate your further help.

Thanks,

Shahriar

Have you worked with HPE support team, and has the failing AP been submitted for root cause analysis?

Any extreme environmental conditions?

I agree that it seems unlikely that this is related to grounding issues.

Hi,

thanks for your replay.

there is no reboot or physical damage. Im using online ups so no voltes issue.

AP is far from xray power generator. 

AP model is 505. Not sure about controller.

FW: 8.7.1.5.

Is there any solution. Can this repairable i mean get back correct RF signal.

thanks for your help.

Shahriar