PSE Test Solutions

Explore Power Over Ethernet PSE Test solutions from Sifos Technology. What type of testing does your PSE need?

Specification Conformance

PoE LLDP Emulation

System Test

Physical Layer Integrity

Manufacturing

Service Test

Specification Conformance

Assure every PSE port meets industry standard requirements for safety and interoperability.

Conformance to IEEE 802.3at or 802.3bt standards is necessary to assure PSE interoperability  with all PD’s in all connection environments while also assuring safe operation with non-PD’s.  PSE designers are challenged by the complexity of IEEE PoE standards and by the fact that PSE controller components, by themselves, do not assure a conforming PSE port.  Multi-port PSE’s add further challenges of power management that can also impact PSE specification conformance.

Product Recommendation
  • One click robust automated testing with pass/ fail results
  • Comprehensive and clear reporting of specification parameters and statistics across multiple PSE ports
  • Emulate all compliant PD Types including LLDP capable PD's
  • Adapts PSE Signaling and Powering behaviors
  • 2-Pair Suite for 802.3at and 2-Pair 802.3bt PSE's
  • 4-Pair Suite will Test 802.3bt 4-Pair PSE's

PoE LLDP Emulation

Assure PSE will properly interoperate with PD's to negotiate power budgets using LLDP

All PD’s that draw more than 13 watts are required to support PoE LLDP so that power budgets can be negotiated with 0.1 watt granularity at each PSE port.   PSE’s may optionally utilize this protocol to allocate power levels to all connected PD’s.

PSE’s that implement LLDP based power management must properly process protocol messages and meet protocol timing requirements specified in IEEE 802.3at and extended in 802.3bt.

Product Recommendation
  • Emulate all PD Power Requests
  • Assess PSE power ACK's and power grants
  • Assess timing of PSE protocol messages
  • Control message periodicity
  • Control other protocol fields including TTL, PD Type, and PD Class

System Test

Evaluate Multi-Port PSE behaviors related to power management and the presence of many PD's.

Whereas PSE Conformance Testing assesses compliance of each stand-alone PSE port to IEEE 802.3at or 802.3bt specifications, Multi-Port Testing assesses system-wide behaviors only observable when many PD’s are powered by a multi-port PSE.  Accordingly, testing PSE performance while powering a group of PDs is a critical component to any System Certification or System QA,  process. 

Product Recommendation
  • Flexibly emulate up to 192 802.3at (Type-1 or Type-2) PD's
  • Emulate PD's Using LLDP Negotiation
  • Test PSE power administration functions and simultaneous connections
  • One-click automated Multi-Port Test Suite automatically surveys multi-port performance
  • Assess class admits, group power-up and power-down timing, static power capacity, transient power reserve, and port-to-port repeatability
  • Colorful, graphical reporting of multi-port characteristics

Physical Layer Integrity

Assess 10/100/1000 Physical Layer Integrity while powering PDs.

PoE loading has the potential to disrupt or impair 10/100/1000Base-T data transmission performance.  More direct and efficient than traditional packet loss testing, physical layer measurements of signal distortion (SNR) and DC Unbalance Tolerance can be used to qualify 10/100/1000 PSE ports under all DC loading conditions.

Product Recommendation
  • Automed analysis of PoE induced signal impairments via mechanism of DC unbalance.
  • Measure Multi-pair SNR (uncorrectable distortion) with PoE loading
  • Measure low frequency Power Spectral Distortion with PoE Loading
  • Assess PSE tolerance of external DC Unbalance

Manufacturing

Avoid quality issues in the field by automating PoE acceptance tests for PSEs.

As a hardware intensive feature of any PSE, PoE service is vulnerable to component and process defects that can lead to safety and interoperability problems in the field.  Highly automated multi-port PSE testing can increase confidence in the integrity of every port shipped.

Product Recommendation
Intelligent Editor for PowerShell PSA
  • Intuitive and extensively documented PowerShell PSA development environment
  • High-throughput, multi-port PSA and PSL "Quick Test" suite included with PowerShell PSA
  • Low cost programmable load platform for 2-Pair and 4-Pair PSE testing
  • Intelligent PowerShell PSA editor package

Service Test

Thoroughly analyze PoE service available to a PD at a service outlet.

To fully qualify PoE service at any service outlet goes well beyond measuring service availability and voltage.  The more subtle PD powering issues in the field typically relate PSE-PD interactions that are challenging to assess. 

Product Recommendation
  • Assess integrity/safety of PD detection process
  • Assess PoE service static power capacity by 802.3at PD Class
  • Assess PoE service support of PD inrush and valid PD load transients
  • Assess PoE service response to PD disconnects
  • Assess PoE service response to PD overloads
  • Assess PoE service support of PoE LLDP power negotiations
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