Network analyser Trendnet TC-NTP1

The TRENDnet TC-NTP1 Inline PoE Tester is a compact, battery-free network tester designed for inline PoE diagnostics. It connects between a Power Sourcing Equipment (PSE) and a Powered Device (PD) using its two Gigabit ports and displays real-time measurements such as voltage, amperage and wattage. The tester supports IEEE 802.3af/at/bt standards for active PoE up to 100 W and also detects non-standard passive PoE devices within an 11–60 V range. Its small size (approximately 100 mm x 36 mm x 26 mm) makes it convenient to carry for field use.

Advantages

The TC-NTP1 provides on-the-spot measurement of PoE parameters without needing batteries or additional equipment, offering a front-panel 4-digit LED display and LED indicators that show PoE type, source, polarity, and power. It offers three modes for flexible testing — T-mode for evaluating PSE ports and voltage output, N-mode for passive PoE devices, and I-mode for inline PD measurements — and includes a step button to cycle or lock readings and a toggle switch to change modes.

Suitable for (tasks / use cases)

• Field technicians verifying PoE voltage and power delivery to IP cameras, access points, and VoIP phones
• Network engineers testing PoE switches and injectors to determine supported standards and output
• Troubleshooting passive PoE installations and non-standard power supplies
• Inline monitoring of a PD’s real-time voltage, current, or wattage during installation or maintenance

Key specifications

• Model: TRENDnet TC-NTP1
• Ports: 1 x Gigabit PSE port, 1 x Gigabit PD port
• PoE support: IEEE 802.3af / 802.3at / 802.3bt (active) up to 100 W; passive PoE 11–60 V
• Display: Front-panel 4-digit seven-segment blue LED
• Testing modes: T-mode, N-mode, I-mode
• Controls: Step button for cycling/locking readings; bottom toggle switch to change modes
• Power: Battery-free operation (powered by the PoE connection)
• Dimensions: ~100 mm x 36 mm x 26 mm
• Certifications: CE, FCC

How to use

Connect the PSE (PoE switch or injector) to the PSE-labelled Gigabit port and connect the PD (device being powered) to the PD-labelled Gigabit port. Use the bottom toggle switch to select T-mode to test the PSE port and measure voltage output, N-mode for non-standard passive PoE devices, or I-mode for inline measurement of the connected PD. Press the step button to cycle through voltage, amperage and wattage readouts; press and hold if you want to lock a specific readout for continuous monitoring. Read the numeric values on the front-panel LED and refer to the LED indicators for PoE type, polarity and power status.

Recommendations

Use the TC-NTP1 inline between the PSE and PD when you need immediate, real-time power measurements. For best results, verify the mode matches the device type (T-mode for PSE testing, N-mode for passive PoE, I-mode for inline PD measurement) and avoid inserting the tester in environments with extreme temperatures or moisture.