LT-300 Series Multi Function Network Cable Tester
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Specifications
- Cable Tracing: Anti-interference digital cable tracer, supports
UTP/STP shielded cable modes. - UTP/Continuity Test: Tests network cable sequence, detects open
circuits, short circuits, and cross-connections. Checks RJ45
connector crimping. - Cable Length Measurement: Measures open/short-circuited network
cables from 1 to 600 meters. - Port Flashing: Locates ports on switches or routers, identifies
port speeds. - PoE Testing: Detects PoE power supply protocols, voltage, Line
pair, pair polarity, and real-time power. - Optical Power Meter: Wavelength (nm):
850/980/1270/1300/1310/1490/1550/1577/1625/1650nm. Power range
(dBm): -70 to +6dBm. - Visual Fault Locator: 10mW power output, wavelength of 650nm,
stable and pulse modes.
Product Usage Instructions
Safety Precautions
Always follow safety precautions mentioned in the user manual to
ensure safe usage of the network cable tester.
Features
- Cable Tracing: Use the digital cable tracer
for UTP/STP shielded cables. - UTP/Continuity Test: Test network cable
sequence, detect open circuits, short circuits, and
cross-connections. Check RJ45 connector crimping. - Cable Length Measurement: Measure the length
of network cables from 1 to 600 meters. - Port Flashing: Quickly locate ports on
switches or routers and identify port speeds. - PoE Testing: Detect PoE power supply
protocols, voltage, Line pair, pair polarity, and real-time power
when connected to a PD load device. - Optical Power Meter: Optional feature with
specific wavelengths and power range. - Visual Fault Locator: Optional feature with
specific power output and wavelength.
Accessories
- Emitter
- Cable Tracer (Receiver)
- RJ45 Cable
- RJ11 Cable
- Alligator Clip Cable
- Screw, Screwdriver
- RJ45 to BNC Connector (only for models with VFL and OPM)
Interface and Function Introduction
Emitter Interfaces and functions:
- Detailed description of emitter interfaces and functions as per
the user manual.
Cable Tracer (Receiver) Interfaces and
functions:
- Detailed description of receiver interfaces and functions as
per the user manual.
Instructions
Power On/Off
This product contains rechargeable lithium-ion batteries. Press
and hold the power button for 2 seconds to turn on or off the
device. If the battery is low, recharge it accordingly.
FAQ
Q: How do I know if the battery needs charging?
A: If the Emitter displays “Lo” or the battery icon indicates
low battery, it’s time to recharge. For the receiver, if the signal
indicators keep flashing or the power indicator is red, it needs
charging.
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Multi-function Network Cable Tester User Manual
· Thank you for purchasing the multi-function cable tracer. Please read the user manual carefully before use and operate it correctly.
· To ensure the safe use of this instrument, please read the “Safety Precautions” section in the user manual carefully.
· After reading the manual, please keep it in a safe place for future reference. · Do not damage the warranty certificate or the warranty seal on the device. · If you encounter any issues during use or if the device is damaged, please contact our
technical support department.
Contents 1. Safety Precautions ……………………………………………………………………………………………………..1 2. Features ……………………………………………………………………………………………………………………2 3. Accessories ……………………………………………………………………………………………………………….2 4. Interface and Function Introduction………………………………………………………………………………3 5 Instructions ………………………………………………………………………………………………………………..9
5.1 Power On/Off……………………………………………………………………………………………………9 5.2 Setting Backlight Time and Auto Shutdown………………………………………………………..10 5.3 Cable Tracing………………………………………………………………………………………………….11 5.4 NCV Mode …………………………………………………………………………………………………….12 5.5 UTP/Continuity Test ………………………………………………………………………………………..14 5.6 Length Measurement ……………………………………………………………………………………….17 5.7 Port Flashing…………………………………………………………………………………………………..19 5.8 PoE Detection …………………………………………………………………………………………………20 5.9 Optical Power Meter*optional ……………………………………………………………………22 5.10 Visual fault locator*optional …………………………………………………………………….24 6.Technical Specifications …………………………………………………………………………………………….25
1. Safety Precautions
· When using this device, please comply with local electrical regulations. Avoid using it in places where electrical devices are prohibited, such as hospitals and gas stations.
· Use only the accessories provided by the manufacturer to avoid damage caused by uncertified accessories.
· Do not place the device in humid, dusty, or high-temperature (above 50°C) environments.
· Use batteries that meet the specifications; otherwise, the device may be damaged. · Do not use this device to detect live power lines (e.g., 220V power lines), as it may
damage the device or pose a safety risk. · Avoid operating communication lines during thunderstorms to prevent lightning strikes
and ensure personal safety. · The accessories provided with this device are only for use with this device. Do not use
them for other purposes to avoid accidents. · Avoid severe collisions or shaking during transportation and use to prevent damage to
the components. · Do not use the device in environments containing flammable gases. · When using the red laser source, do not look directly into the light, as it may cause
permanent eye damage. When not in use, turn off the red laser source and cover it with a protective cap. · Do not disassemble or repair the device by yourself. If disassembly is necessary, please contact our technical support team
2. Features
1. Cable Tracing: Anti-interference digital cable tracer, supports UTP/STP shielded cable modes.
2. UTP/Continuity Test: Tests network cable sequence, and detects open circuits, short circuits, and cross-connections. Also check if the RJ45 connector is properly crimped.
3. Cable Length Measurement: Measures the length of open/short-circuited network cables from 1 to 600 meters.
4. Port Flashing: Quickly locates ports on switches or routers and identifies port speeds.
5. PoE Testing: Detects PoE power supply protocols (802.3BT/AT/AF/Non-standard), power supply voltage, Line pair, pair polarity, and real-time power when connected to a PD load device.
6. Optical Power Meter: Wavelength (nm): 850/980/1270/1300/1310/1490/1550/1577/1625/1650nm. Power range (dBm): -70 to +6dBm. *optional
7. Visual fault locator: 10mW power output, wavelength of 650nm, stable and pulse modes. *optional
3. Accessories
1. Emitter 2. Cable tracer 3. RJ45 Cable 4. RJ11 Cable 5. Alligator Clip cable 6. Screw, Screwdriver
7. RJ45 to BNC connector (only for the model with VFL and OPM))
4. Interface and Function Introduction
(1) Emitter Interfaces and functions:
1 Port Indicators 2 Power On/Off 3 Left Direction Key
4 Settings Key: Sets backlight timeout and auto shutdown; calibrates optical power. 5 REF: Optical Power Difference Key 6 Main Function Switch Key 7 LED Light Key 8 Right Direction Key 9 Confirm Key 10 HOLD: Optical Power Lock Key
Top interface
11 Optical Power Meter *optional 12 LED Light 13 Visual fault locator *optional
14 USB Type-C charging port Left interface
Right interface
15 UTP/Continuity Test/Cable Tracing 16 Port Flashing/Length Test 17 PoE Input 18 PoE Output (It’s the PoE input interface loopback output, not powered by the
device. No output if the connected PoE switch is off) (2)Cable tracer (Receiver) Interfaces and functions
1 LED light 2 Power Indicator 3 Earphone jack 4 PD Powered test port (Flashing is the standard PoE, Constant brightness is
non-standard PoE.) 5 USB 5V charging port 6 Power: Long press to turn on/off (Red light when charging, turns off when fully
charged) 7 Long press to silent mode, short press SNCV (Only effective in SCAN+NCV
mode) 8 100M /1000M indicator 9 UTP cable sequence/signal strength indicator 10 Shielded layer continuity indicator 11 Mode indicator 12 Sensitivity knob 13 MODE (1. Short press to switch: SCAN mode/NCV mode/UTP mode 2. Set
automatic shutdown time) 14 LED switch 15 UTP cable type indicator: straight /cross /other 16 SNCV indicator
Bottom interface
17 UTP cable test port Note: Receiver port continuity detection only supports the local end, and does not support the remote end. Emitter can support near-end, middle-end end, and far-end port detection.
5 Instructions 5.1 Power On/Off
This product contains rechargeable lithium-ion batteries. Press and hold the power button
for 2 seconds to turn on or off the device. Attention: If the Emitter displays “Lo” and the battery icon is low battery, the battery needs to be charged; After the receiver is turned on, the 1-8 signal indicators light keeps flashing, or the power indicator light is red, indicating that the Receiver needs to be charged.
5.2 Setting Backlight Time and Auto Shutdown
The Emitter automatic shutdown setting
In the power-on state, press the settings key to enable and switch between auto shutdown or backlight timeout options. Use the left and right keys to set the time. Auto shutdown can be set from 0 to 240 minutes (0 means auto shutdown is off). Backlight timeout can be set from 0 to 60 seconds (0 means the backlight stays on).
Press the confirm key to save settings. Press the menu key to exit without saving.
press auto shutdown setting backlight timeout setting
the
switch between auto shutdown or backlight timeout options
to set the time
The Receiver automatic shutdown setting
In the shutdown state, press and hold the receiver MODE
key, then press the power
key to turn on and enter the shutdown time setting mode. In this mode, the “straight,
Cross, Other” and sequence indicator lights flash.
Press the MODE
key to modify the shutdown time. One line sequence indicator
light represents 10 minutes. If the 1-3 indicator lights are on, it indicates that the current
automatic shutdown time is set to 30 minutes, which can be set to 10-90 minutes. If all
indicator lights are not on, it means automatic shutdown is turned off.
After setting up, press the power
key to save and exit the setting mode.
5.3 Cable Tracing
Connect the network or telephone cable to the “Wire Mapping/Continuity Test/Cable Tracing” port on the Emitter. Press the menu key to switch to the cable tracing function (default on startup). The receiver can be used for cable tracing.
Adjust the sensitivity knob on the receiver. When scanning the target cable, the closer the receiver’s probe, the stronger the signal and the louder the sound. Press and hold the “SNCV” key on the receiver to enter or exit silent mode. Use the left and right keys to switch between UTP and STP modes. UTP is for unshielded network cables, and STP is for shielded network cables.
Use the left and right keys to switch between UTP and STP modes. Quickly verify the tracking result: After finding the cable, connect the network cable to the wire receiver “UTP” port for pair line detection. For example, When the “Straight/Cross/Other” indicator is on, indicates the verification of the matching cable. Note: The UTP port of the emitter and receiver can max 60V withstand voltage, and the wire can be traced directly in connection with the PoE switch.
5.4 NCV Mode
(1) NCV Turn on the receiver, press the “Mode” button, “NCV” indicators is red, allowing simultaneous cable tracing and NCV scan. When the probe detects nearby AC voltage, the “NCV” indicator will flash on the receiver and emit a beeping alarm. The 1-5 indicators on the panel will flash to indicate the current NCV scan signal strength. Different signal strengths will result in different beeping frequencies and light flashing frequencies.
Inductive NCV Scan (2) SNCV Strength Signal Scan
Line interruption test
When the receiver is in “SCAN + NCV” mode, press the “SNCV/Silent” key to increase sca n sensitivity. This can be used to trace plastic water pipes or high-voltage wires inside walls (not effective for iron pipes)
Note: This function only works in ” SCAN + NCV ” mode. For safety, before working with
wires, always verify that they are De-energized with an additional voltage tester (3) Live/Neutral Wire Detection Mode Touch the receiver’s probe to the live/neutral wires in the electrical box or the live/neutral holes in wall sockets or power strips. The indicator lights and beeping alarm will help distinguish between live and neutral wires.
· Live Wire: The indicator flashes quickly, and the beep is rapid. · Neutral Wire: The indicator does not light up or
flashes slowly, with no beep or a slow beep.
5.5 UTP/Continuity Test
(1) UTP test Connect the network or telephone cable to the “CONT/SCAN” port on the Emitter, and the other end to the UTP port on the receiver (the receiver must be powered on).
On the Emitter, press the menu key to switch to the “CONT” (continuity) function mode to perform the wire mapping test.
The 1-8 and S sequence indicators on the screen will display the network cable sequence.
· 1Gbps/100Mbps: Indicates whether the cable can be used for 1000M or 100M Ethernet networks. A straight-through connection will be displayed with a “|”, and a crossed connection will be displayed with a jumping indicator. The receiver can also display this information.
· 255: Receiver number, which can be customized.
The receiver’s network cable type indicator can quickly determine if the cable is normal. If it shows “Straight” or “Cross”, the cable is normal. When testing the sequence, a “beep” indicates a connected pair, and a “buzz” indicates a short-circuit pair (all short-circuit pairs will light up simultaneously).
After the 8 indicators stop flashing, the receiver will beep to indicate the cable type: one “buzz” sound is for straight-through, two “buzz” sounds is for cross, and three “buzz” sounds is for other or incorrect connections.
shielded wire
4 5 short circuit 1 8 open circuit test result
1 8 cross
(2) Continuity Test
The continuity test checks the connection of the RJ45 connector or the cable within 10cm of the port (note: the receiver tests up to 1 meter).
In Continuity test mode, connect the network cable to the “CONT/SCAN” port on the Emitter. The “1-8, S” indicators will show the continuity test results. If the indicators light is on, the RJ45 connector is properly crimped. If an indicator light is off, the corresponding pin is not properly crimped.
Normal RJ45 connector
Pin 5 of the RJ45 connector is abnormal.
The continuity test on the receiver: Turn on the receiver, press “Mode” key until the “RJ45” indicator light is on, and connect the network cable to the wire receiver “UTP” port, The “1-8, S” indicator light being on indicates that the RJ45 connector is properly crimped. The indicator light being off means that the corresponding pin of RJ45 connector is abnormal. Note: In Wire Pairing/Crimping or cable tracing function, if a wire pairing short circuit or abnormal detection occurs without physical connections, press setting key in continuity test interface, then press power key to reset the continuity test function.
5.6 Length Measurement
Measure the length of open/short-circuited network cables from 1 to 600 meters. Note that the other end of the cable should not be connected to any device or powered on. Insert the cable into the “Length/Flash” port on the left side of the Emitter.
On the Emitter, press the menu key to switch to the “Length” function mode, then press the confirm key to start the length measurement.
Press the Confirm Key to test During the test, wait for the test progress to complete
1 2 cable pairs pairs
3 6 cable pairs
4 5 cable pairs
7 8 cable
Test result
After the testing is completed, the results for each twisted pair will be displayed on the screen.
Switch the numerical unit:
Press setting
key to switch the numerical unit
Flashing
Flashing
Press
key to switch the unit, the unit can be switched between m(meter)
or Ft (feet) in turn, flashing unit indicate the current selection, press confirm key to save the
unit.
5.7 Port Flashing
Connect the network cable to the “Flash” port on the Emitter, and the other end to a switch or router.
On the Emitter, press the menu key to switch to the “Flash” function mode. The device will automatically start the test.
The device will send a flashing signal. If the connection is normal, the switch port icon on the screen will flash at a certain frequency. If the connection is not normal (e.g., the cable is not properly connected), the switch port will not change. The switch or router port will flash
at a fixed frequency, making it easy to identify the target port and avoid unplugging the wrong cable.
Port Rate Detection: The port rate is automatically detected simultaneously when the port flashing.
1Gbps
100Mpbs
abnormal results
The possible reasons for abnormal results are as follows: 1. The wrong port was connected
to the Emitter. 2. The network cable is faulty or not properly connected. 3. The ports of the
switch or router are faulty. 4. The instrument is faulty.
5.8 PoE Detection
The PoE detection function is used to detect the PoE power supply protocol, line pairs, voltage, and real-time power when connected to a PD load device. It supports IEEE802.3bt/at/af and non-standard protocols.
Connect the network cable to the “PoE Input” port on the Emitter, and the other end to a PoE switch or power supply.
On the Emitter, press the menu key to switch to the “PoE” function mode. The device will automatically start the test.
voltage
The real-time PoE power from from Power Sourcing Equipment (PSE ) to IP video surveillance camera and a ny other Powered Devices (PD) (PoE input connected to a switch, PoE output connected to POE camera, etc. load testing)
Protocol
The vertical line above represents the positive pole, and the group of 1236 is one set, while the group of 4578 is another set. As shown in Figure, 1 2 are the positive poles, 3 6 are the negative poles
802.3 bt pin1/2+3/6-
802.3 at pin1/2-3/6+
802.3 af pin1/2-3/6+
non-standard PoE pin4/5+7/8-
4/5+7/8-
4/5+7/8-
PD powered detection: The PD interface at the bottom of the receiver is connected to the
POE switch or the power supply device, and the indicator light is on indicates that there is POE voltage output. 1236,4578 two indicator lights indicate that the cable pair is powered. When both indicators are on, it indicates that both pairs are powered.
5.9 Optical Power Meter*optional
Connect the fiber optic cable to the “OPM” port on the Emitter, and the other end to an optical terminal or fiber optic transceiver.
(1) Function key description Lock display
Difference measurement
wavelength choice (2) Operating instructions
: Switch the unit
1. When detected the optical signal, the optical power detection value of the meter will
change
2.Press
to Select the wavelength, if the measurement wavelength is not at
the calibration wavelength point, select a similar calibration wavelength point
Lock display function
When measuring, press
, then the display content is locked and will not change.
The HOLD button light is on. Easy reading. Press the lock button again to cancel the lock.
Difference measurement function (optical fiber loss measurement)
When measuring, press
, and the “REF” button lights up. The
instrument automatically stores the current value and then displays the
difference between the new measurement value and that value.
Press the difference display button again to cancel the difference display
and return to the real measurement display state
User self-calibrated optical power values
When measuring, first select the current laser wavelength, hold down
for 2
seconds, the optical power value flashes, indicating that the user enters the self-calibration
mode, the user can press
to select the new optical power
value. Press the Confirm key to save the changes and exit, press the menu
key not to save the changes and exit. In user self-calibration mode, press
and hold the setting key again for 2 seconds to restore the factory
calibrated optical power value and exit the calibration mode.
5.10 Visual fault locator*optional
Connect the fiber optic cable to the “VFL” universal connector on the top of the device. On the Emitter, press the menu key to switch to the “VFL” function mode.
By default, the red laser source outputs 10mW at a wavelength of 650nm.
Press the key
to turn on/off and switch between stable and pulse modes.
Press the device key 2Hz to turn the red light on/off and toggle mode
Steady on mode
flicker 1Hz
flicker
Note: The emission laser source is a high-intensity laser light source. Do not look at the laser emission port with your eyes or aim at your eyes, which may cause eye damage.
6.Technical Specifications
Product Model Display
Cable
Multi-function Network Cable Tester
3.0-inch HD display
Transmit Signal
Digital signal (decisively rejects noise and false signals)
Tracing/Wire Cable Types
Mapping/Con tinuity Test
UTP Cable Test
Supports RJ45 twisted pair, RJ11 telephone cable, BNC video cable, and low-voltage metal cables.
Tests any two or more wires in a network cable. The screen displays the connection sequence, Gigabit/100M, and cable number. The receiver identifies through indicator lights.
Continuity Test
Emitter: Minimum recognition length of 10cm Receiver: Minimum recognition length of 1m
Short Circuit Detection
Supports network cable short circuit detection
Length
Measures open/short-circuited network cables from 1 to 600 meters. Accuracy:
Measurement Cable length x 3% ± 1m
Port Flashing Quickly locates ports connected to Ethernet switches and other devices.
Supports IEEE802.3BT/AT/AF and non-standard protocol detection. Displays
PoE Testing
power supply voltage, power supply pins, and pin polarity. Supports PoE input voltage loop-through output. Real-time power can be detected when connected
to a load. Online power range: 0~90W.
PD Power Detection
Detects standard or non-standard PoE, supports 24V and 48V PoE.
Optical Power Meter (*optional)
Wavelength (nm): 850/980/1270/1300/1310/1490/1550/1577/1625/1650nm. Power range (dBm): -70 to +6dBm
Visual fault locator (*optional)
Emits visible red laser to detect fiber optic breaks, cracks, bends, and other faults.
Power
Battery Power
Emitter Receiver
3.7V 2000mAh lithium-ion rechargeable battery 3.7V 2000mAh lithium-ion rechargeable battery
Working Environment and Specifications
Operating Temperature
-10—+50
Operating Humidity
30%-90%
Dimensions Emitter
142mm x 64mm x 30mm / 0.2Kg
Receiver
218mm x 48mm x 32mm / 0.15Kg
The above data is for reference only. Changes may be made without prior notice. For detailed technical inquiries, please contact our technical support team.
Documents / Resources
 | WANLUTECH LT-300 Series Multi Function Network Cable Tester [pdf] User Manual 300-series, LT-300 Series Multi Function Network Cable Tester, LT-300 Series, Multi Function Network Cable Tester, Function Network Cable Tester, Network Cable Tester, Cable Tester, Tester |