Takeaway: The FX120 and PX92 have similar feature sets and applications, however, the PX92 offers additional Wi-Fi capabilities while the FX120 has more advanced PON analysis features in OPM testing. If you don't need to test and power levels, just network verification, the MTX90 will do the trick.
With the rapid evolution of fiber networks and multi-gigabit services, selecting the right test equipment is critical for efficient deployment and troubleshooting. The FX120 family, PX92 series, and MTX90 PON analyzers and multi-gigabit test sets complement each other to address different stages of fiber deployment for complete coverage of the full lifecycle.
Before getting into each product, learning how to differentiate between pass-through and terminated meter is equally as important.
Pass-Through or Terminated PON Configuration?
VeEX PON test sets come in dual port and single port versions, for pass-through and terminated applications.
Pass-Through Meter
A pass-through PON meter measures both downstream and upstream signals by sitting in line, between the OLT and the ONT, without interrupting service. Depending on the use case, a pass-through PON meter could be used at the headend with an external attenuator or inserted downstream of the splitter for service activation and troubleshooting.
Terminated (T) Meter
A terminated PON meter measures only the downstream signal by directly connecting to the fiber from the OLT. A terminated PON meter with the appropriate interfaces could temporarily replace the ONT during the construction-phase testing to validate the network before customer equipment is installed.
FX120 Series: FX120/FX120T/FX120 Lite
PON Analyzer and Multi-Gig Service Test Set/PON Analyzer
- Primary Role: Dedicated PON analyzer for construction and activation workflows
- Strengths:
- Advanced PON analysis (GPON, XGS-PON, EPON, 10G EPON)
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- Displays downstream/upstream power levels, OLT/ONT IDs, rogue ONU detection
- Optional QoE tests (Speedtest®, V-PERF) up to 10G
- Optional end-of-fiber detection for drop cable length
- Best For: Technicians focused on PON validation and troubleshooting, especially during construction and activation
- Variants: FX120 Lite (simpler, no Multi-Gig QoE testing), FX120T (terminated PON analyzer)
PX92/PX92T
PON Analyzer & Multi-Gigabit Service QoE Test Set with Wi-Fi Testing
- Primary Role: Converged tool for PON analysis and multi-gigabit service testing
- Strengths:
- PX92: Pass-through PON analyzer for in-service activation and troubleshooting
- PX92T: Terminated version for construction-phase validation
- Supports GPON and XGS-PON
- Integrated Ethernet (up to 10G) and Wi-Fi QoE testing (2.4/5/6 GHz)
- ONT emulation for OLT provisioning checks
- Best For: Technicians needing end-to-end service turn-up and QoE validation in one device
MTX90
Multi-Gigabit Internet Services, Ethernet Speed, & Wi-Fi Testing
- Primary Role: Multi-gigabit Internet service test set optimized for QoE validation
- Strengths:
- Ethernet testing up to 10G (RJ45 and SFP+)
- Wi-Fi testing (2.4/5/6 GHz) with Speedtest® and V-PERF
- PON ONT emulation
- Designed for installation and commissioning of high-speed services
- Best For: Teams focused on multi-gigabit service verification and Wi-Fi performance, less on detailed PON troubleshooting
Related Test Solutions
- FX120 Series - PON Analyzer and Multi-Gig Service Test Set/PON Analyzer
- PX92/PX92T - PON Analyzer & Multi-Gigabit Service QoE Test Set with Wi-Fi Testing
- MTX90 - Multi-Gigabit Internet Services, Ethernet Speed & Wi-Fi