Psiber LM26 LanMaster 26 Gigabit, VoIP, PoE Link Tester

The most advanced Link Tester available, the new LanMaster 26 features Gigabit over copper Link testing capability and VoIP/PoE detection. The Model 26 even measures the voltage supplied by the VoIP or PoE port with typical loading to ensure that the voltage level is adequate. The LanMaster 26 tests 10/100/1000Base TX, VoIP or PoE port to determine the speed and duplex mode. The port ID feature identifies which port on a hub or switch that a wall outlet is connected by flashing the Link light on the connected port. The LanMaster 26 provides critical network connectivity and configuration information needed to maintain and troubleshoot a LAN at an affordable price .


The IEEE 802.3 Standards require 10/100/1000 BaseTX LAN equipment to use a signaling system to establish a Link between two devices called Link Partners. 10BaseT Ethernet devices typically use a Normal Link Pulse to establish the Link. 100/1000 BaseT Ethernet equipment (and some 10BaseT products) use a burst of Fast Link Pulses (FLPs) to transmit a Link Code Word defining the capabilities of the device. If both Link Partners have Auto-negotiation capability, a Link is established based on the following priority:
1. 1000BaseTX Full Duplex
2. 1000BaseTX Half Duplex
3. 100BaseTX Full Duplex
4. 100BaseTX Half Duplex
5. 10BaseT Full Duplex
5. 10BaseT Half Duplex

The IEEE 802.3 Standards do not require Ethernet equipment to support Auto-negotiation or more than one speed or duplex mode. A second type of signaling called Parallel Detection (a continuous MLT-3 waveform) can also be used to establish a 100BaseT Ethernet Link. Parallel Detection signaling does not differentiate between half duplex and full duplex mode which can lead to poor network performance if both Link Partners are not properly configured. Ethernet LAN equipment that has been manually configured to a specific speed and duplex mode may establish a Link with a Link Code Word, an NLP or a Parallel Detection (MLT-3) signal. Knowing the type of signaling used on a Link is essential to optimizing system performance.The LanMaster 26 detects and decodes the different Link signals on 10/100/1000BaseT Ethernet networks and displays the equipment configuration signaling type.

The LanMaster 26 also tests Power over Ethernet (PoE) as defined by IEEE Standard 802.3af and VoIP ports for voltage levels.


LanMaster 26 Link Tester
RJ-45 Female-Female Coupler
9 Volt Alkaline Battery
User Guide