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Zhuhai Kemet Electronics Co., Ltd
F900 cable length measurement | breakpoint/short-circuit point locator
NegotiableUpdate on 07/30
- Model
- Nature of the Manufacturer
- Producers
- Product Category
- Place of Origin
Overview
F900 Cable Length Measurement | Breakpoint/Short Circuit Point Locator Brand: Korea Yooyee FINEST Model: F900 Origin: Korea KOREA Korea Yooyee FINEST-F900 This precision TDR (Solid Time Domain Reflectance) cable tester uses the principle of solid-state time domain reflection technology (pulse wave echo) to measure cable length
Product Details
F900 cable length measurement | breakpoint/short-circuit point locator
Brand: Korean Youyi FINEST
Model: F900
Origin: KOREA, South Korea
The Korean FINEST-F900 precision TDR (Solid State Time Domain Reflectance) cable tester uses the principle of solid-state time domain reflection technology (pulse wave echo) to measure cable length and find the distance from the test point to the breakpoint or short-circuit point. The F900 is economical and easy to use, and has many functions that are only available in expensive high-end instruments.
The Korean FINEST-F900 automatic matching output impedance (25, 50, 75, 100, 125, 150 Ω) is suitable for comprehensive cabling applications such as power cables, coaxial cables, telephone lines, television lines, and network cables. Users only need to press buttons to select the matching cable type, adjust the VOP propagation rate value of the measured cable (VOP value directly affects the accuracy of the measurement result), and set the length display unit themselves. The F900 is equipped with a VOP database for 39 sets of standard cables, with 20 memory units. Users can customize the testing mode and store VOP values for 20 sets of cables.
The Korean Youyi FINEST-F900 has built-in overvoltage safety protection (with a maximum effective voltage of 250V, which can effectively prevent accidental damage to the instrument) and online voltage monitoring function. When the online voltage of the test cable exceeds 6.5V, the instrument LCD will display the overvoltage indicator "OUCH" and terminate the test.
The Korean Youyi FINEST-F900 has a threaded ABS shell (anti slip), dust and splash proof functions (up to IP42 standard), and uses 4 AA batteries (NEDA 15A or NR 6). The batteries are installed in the rear battery compartment for easy replacement. F900 is mainly suitable for cable production and wholesalers, retailers, electricians, on-site engineers, as well as comprehensive wiring installation personnel who need to measure cable length and detect cable open circuits and short circuits.
Product Features
- Large LCD backlit display;
- Accuracy up to 50cm, maximum measurement length up to 3000 meters;
- Automatic output impedance control, automatic range, automatic zeroing, and automatic sensitivity adjustment;
- Compatible with multiple cable types, simply set the propagation rate V.O.P value of the tested cable;
- 250V overvoltage safety protection, online voltage monitoring;
- User friendly menu interface design, easy to set up and operate;
- On site measurement scale conversion function (meter value and imperial system);
- Quickly search for the V.O.P value of the sample cable;
- 20 sets of user-defined storage memory units;
- Built in database of 39 standard cables;
- CE certification.
TDR testing technology is suitable for all coaxial, communication, network, and power cables composed of two metal cables
Directly connect one end of the cable to quickly and accurately measure the length
Accurately feedback the correct location of the fault point through the fault reflection state
Online voltage monitoring and safety warning information prompt (250V rms)
Built in database of 39 commonly used international cables, 20 non-standard custom sampling modes, suitable for all specifications of metal cables
Can detect faults such as short circuit, open circuit, reverse connection, crossover, and series winding in network twisted pair cables (corresponding to model F901)
- Technical Parameter
- attachment
- Product Diagram
- Cable Type
- FAQs
- model selection
| Applicable objects | Coaxial cable, shielded cable, twisted pair cable, multi strand cable Power cables, comprehensive wiring cables, etc |
| Measurement range | Depends on the V.O.P value of the measuring cable 3.7km @V.O.P≤99.9% 3.0km @V.O.P≤80.0% 2.4km @V.O.P≤66.0% 1.9km @V.O.P≤50.0% |
| Range selection | automatic range control |
| Resolution | 50cm |
| accuracy | ± (2% reading+50cm)<100m ± 2% reading ≥ 100m The above accuracy corresponds to the following cables: 1. Coaxial cable with a length less than 2.4km 2. Telephone lines with a length less than 2km 3. Wires with a length less than 1km |
| blind area | 5m |
| Output Impedance | 25, 50, 75, 100, 125 or 150 Ω |
| Impedance selection | Automatic output impedance control |
| VOP value | Adjustable from 1.0% to 99.9% |
| Built in database | 39 sets of standard cables |
| Memory unit | 20 sets of user-defined cable types |
| cable joint | BNC |
| Online voltage detection | 6.5V |
| Overvoltage protection | 250V effective value (via BNC connector) |
| display | Icon type 7-segment LCD with backlight (automatically turns off after 1 minute without operation) |
| Dustproof and Waterproof | IP42 |
| model No | 4 1.5V (AA, LR6) |
| BATTERY LIFE | About 5000 tests |
| operation temperature | -18 ℃ to 60 ℃ |
| storage temperature | -20 ℃ to 70 ℃ |
| relative humidity | 85% at 35 ℃ |
| External dimensions | 235H x 100W x 44D mm |
| weight | About 450 grams |
| Overvoltage protection standard | EN 60950: Chapter 1999 2.3 (Communication Network Overvoltage Protection Standard) |
| Safety standard | Compliant with IEC1010-1: 2001 |
| EMC | EN 61326: 1997+A1: 1998/CE certification |
| Standard accessories | - Battery (1.5V AA x 4 cells) Crocodile clip test stick (AC9) - Soft portable bag (S2C) - User manual |
BT9 (battery (1.5VAA x 4 cells))
AC9 (Crocodile Clamp Test Stick)
User’s manual
S2C (front of soft portable bag)
Back of soft portable bag
(Can be worn on the shoulder or attached to the belt)
(Can be worn on the shoulder or attached to the belt)
blister pack
Large LCD backlit display
Icon type 7-segment LCD with backlight,
(Automatic shutdown after 1 minute of inactivity)
LCD size: 60mm x 45mm.
(Automatic shutdown after 1 minute of inactivity)
LCD size: 60mm x 45mm.
Easy operation
Four main buttons and four function keys,
Simplify the operation of complex TDR principle instruments,
User friendly menu interface design.
Simplify the operation of complex TDR principle instruments,
User friendly menu interface design.
Ergonomic anti slip design
Handheld part with anti slip design.
Originating from Korea
Origin, product serial number, and production date information.
Twisted pair cable
Separate a pair of wires to connect the red crocodile clip and the black crocodile clip respectively
coaxial cable
The red crocodile clip connects the cable core,
Black crocodile clip connected to shielding layer
Black crocodile clip connected to shielding layer
shielded cable
The red crocodile clip connects the wires near the shielding layer,
Black crocodile clip connected to shielding layer
Black crocodile clip connected to shielding layer
Multi strand line
Connect any adjacent two cores
Sampling mode?
1. Power on ->Press function key 1 (SELECT) ->
2. When VOP flashes, press function key 4 (OK) ->
3. Press function keys 2 or 3 to activate SPL mode (SPL flashing) ->
4. Press function key 4 (OK) ->Connect the sample cable and manually enter the actual length ->
5. Press function key 4 (OK) ->Press the TEST test key ->
6. The screen displays the VOP value of the sample cable measured by the machine [xx. x%] -
7. Press the Memory key ->Select STORE ->Enter storage location [01~20] ->Press function key 4 [OK] ->Press function key 1 [STORE] to store this measurement result.
Retrieve the VOP data of the sample cable?
1. Press the Memory key -
2. Press function key 2 [RECALL] ->Enter storage location [01-20] ->
3. Press function key 4 [OK] ->Press function key 2 [RECALL] to confirm
Regarding cable types and sampling lengths?
1. The instrument is suitable for coaxial cables, shielded cables, twisted pair cables, multi strand cables, power cables, comprehensive cabling cables, etc;
2. The instrument is not suitable for testing single core wires and cannot guarantee the correctness and stability of free combination cable testing, such as multiple single core cables already installed in cable trays;
3. Based on experience, it is not recommended to test high-voltage cables. The ideal testing range for power cables is within 240mm ²;
4. For non-standard or cable types other than the 39 sets of cable data embedded in the instrument (such as power cables, power cables, etc.), the VOP data of this type of cable needs to be known in advance for actual use. If the specific data is not clear, the VOP value needs to be sampled and tested in advance (with a sampling length of at least 10 meters, and the longer the actual sampling length, the higher the accuracy). Please be sure to understand this in advance to avoid inconvenience in actual use and on-site situations.
Online voltage detection?
The F900 online voltage detection is 6.5V, which complies with EN 60950:1999 section 2.2.3 (communication network overvoltage protection standard). If the voltage is higher than this, the instrument will self protect, stop testing, and prompt an error message. When the overvoltage protection is 250V and the live line does not exceed 250V, the instrument is safe and will not be damaged. F900 is mainly designed for testing low voltage lines below 6.5V or non live cable types.
Selection reference
| model | CLM33 | F900 |
| measuring principle | Four wire resistive type | TDR solid-state time-domain reflection |
| range | 30000 meters | 3000 meters |
| accuracy | 1% | 2% |
| function | Cross sectional area ranging from 0.15mm ² to 240mm ² 20 standard gears 8 user-defined gears Ohmic gear |
AUTO 39 sets of standard cables 20 groups of user customization Automatic output impedance control VOP value adjustable from 1.0% to 99.9% |
| Test blind spots | not have | 5 meters |
| Sampling value | Standard 5 meters | Any length greater than 10 meters The longer the sampling length, the higher the measurement accuracy |
| resolution | 0.1 meters (length)/1 meter Ω (resistance value) | 50cm |
| On-line Voltage | Cannot be used for testing live circuits | Effective overvoltage protection within 6.5V/250V |
| Measurement conditions | Both ends of the cable must be clamped; If the end of a multi strand wire can be found, the end can be short circuited and measured at one end | Test at one end, clamp two adjacent wires |
| Cable material | Standard mode: Pure copper or pure aluminum national standard Custom mode: Any metal conductor |
Any metal conductor with two or more cores |
| Applicable objects | Single core wire (or a single strand of multi-core wire) National standard power cables, non-standard cables, and special cables |
Twisted pair cable, coaxial cable, shielded cable, multi strand cable |
F900 vs F901
| Model/Function |
F901
|
F900
|
| Display resolution/accuracy |
5cm / <1%
|
50cm / <2%
|
| Length range (Ethernet cable, telephone cable, coaxial cable, communication cable, power cable, etc.) |
600 meters
|
3000 meters
|
| Network mapping: short circuit, open circuit, misconnection, reverse connection, crosstalk |
V
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| Configure remote identifier |
V
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| Audio generator |
V
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| Large LCD backlit display |
V
|
V
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| Automatic output impedance control AUTO Automatic zeroing Automatically adjust sensitivity |
V
|
V
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| Simple front panel design for easy setup and operation |
V
|
V
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| 39 sets of standard cable databases |
V
|
V
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| 20 sets of user-defined cable types |
V
|
V
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| Online voltage detection of 6.5V (exceeding it will prompt overvoltage "OUCH" and terminate the test) |
V
|
V
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| 250V effective value overvoltage protection |
V
|
V
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| Dustproof and waterproof IP42 |
V
|
V
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| CE certification |
V
|
V
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