
User Manual
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Last change: 19 September 2019
v1.0
PCE-CLT 10 Electrical Tester
© PCE Instruments

Contents
1 Safety notes ........................................................................................... 1
2 Characteristics ...................................................................................... 2
3 Technical specifications ...................................................................... 2
4 Delivery contents .................................................................................. 2
5 Device description ................................................................................ 3
6 Operation ............................................................................................... 3
6.1 Preparation / inserting the batteries .................................................................................. 3
6.2 Turn on/off cable length tester .......................................................................................... 4
6.3 Main menu ....................................................................................................................... 4
6.4 Cable length measurement .............................................................................................. 4
6.5 VOP library ....................................................................................................................... 6
6.6 Showing the history .........................................................................................................11
6.7 Settings ...........................................................................................................................12
7 Contact ............................................................................................... 13
8 Disposal ............................................................................................... 13
© PCE Instruments

© PCE Instruments
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1 Safety notes
Please read this manual carefully and completely before you use the device for the first time. The
device may only be used by qualified personnel and repaired by PCE Instruments personnel.
Damage or injuries caused by non-observance of the manual are excluded from our liability and
not covered by our warranty.
• The device must only be used as described in this instruction manual. If used otherwise,
this can cause dangerous situations for the user and damage to the meter.
• The instrument may only be used if the environmental conditions (temperature, relative
humidity, …) are within the ranges stated in the technical specifications. Do not expose
the device to extreme temperatures, direct sunlight, extreme humidity or moisture.
• Do not expose the device to shocks or strong vibrations.
• The case should only be opened by qualified PCE Instruments personnel.
• Never use the instrument when your hands are wet.
• You must not make any technical changes to the device.
• The appliance should only be cleaned with a damp cloth. Use only pH-neutral cleaner,
no abrasives or solvents.
• The device must only be used with accessories from PCE Instruments or equivalent.
• Before each use, inspect the case for visible damage. If any damage is visible, do not
use the device.
• Do not use the instrument in explosive atmospheres.
• The measurement range as stated in the specifications must not be exceeded under
any circumstances.
• Non-observance of the safety notes can cause damage to the device and injuries to
the user.
We do not assume liability for printing errors or any other mistakes in this manual.
We expressly point to our general guarantee terms which can be found in our general terms of
business.
If you have any questions please contact PCE Instruments. The contact details can be found at
the end of this manual.

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2 Characteristics
- Precise and quick cable length measurement
- Easy operation
- 2.4“ LCD
- Auto zero and auto range
- 20 pre-set cable types
- Auto power off
- Automatic setting of sensitivity for more accurate cable length measurement
- Up to 99 individual cable types can be set
3 Technical specifications
Measuring range cable length
Depending on the propagation speed of the tested
cables
5 ... 3000 m / 16.4 ... 9842.5 ft
with shortening factor ≤99.9%
5 ... 2400 m / 16.4 ... 7874.0 ft
with shortening factor ≤80.0%
5 ... 2000 m / 16.4 ... 6561.7 ft
with shortening factor ≤66.0%
5 ... 1500 m / 16.4 ... 4921.3 ft
with shortening factor ≤50.0%
Time domain reflectometer
± [2% of reading ± 0.2 m] <100 m
± [2% of reading ± 0.5 m] ≤100 m
Automatic output of the impedance control
Shortening factor / propagation
speed
Adjustable from 1.0 ... 99.9%
Cable types
99 memory slots for individual cables
Adjustable between 10 and 60 minutes
0 ... 40°C / 32 ... 104°F
-10 ... 50°C / 14 ... 122°F
4 Delivery contents
1 x Cable fault meter PCE-CLT 10
2 x Test leads
2 x Crocodile clip
2 x AA battery 1.5V
1 x Transport bag
1 x User manual

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5 Device description
1. BNC socket – to measure cable length
via Coax option
2. RJ45 socket - to measure cable length
via network option
3. LCD
4. OK / measuring key
5. Coax-netzwork switch key
6. Set key
7. key (up / increase value)
8. key (down / decrease value)
9. key (On/off / in menu: back)
6 Operation
6.1 Preparation / inserting the batteries
To run the cable length meter, the included batteries must be inserted first. To do so, turn around
the meter and open the battery compartment cover at the rear side. Insert the batteries as marked
in the battery compartment. Then close the battery compartment cover.
Note:
Replace the batteries as soon as the battery icon in the display glows in red. Only use 1.5 V AA
Alkaline batteries. If you will not use the cable fault tester for a longer period of time, remove the
batteries.

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6.2 Turn on/off cable length tester
Press and hold the key for approx. 3 seconds to turn on the meter. To turn off the meter,
press and hold the key for approx. 3 seconds again.
Note:
The meter has an automatic power off function to save battery power. The cable length meter will
turn off automatically after 10 minutes of inactivity.
6.3 Main menu
After powering on, the cable fault meter will be in the mode to measure network cables. To enter
the main menu, short-press the key. To return to measuring mode, short-press again.
When you are in the main menu, you can use the and keys to select one of the following
functions which you can confirm with .
Setting the velocity
of propagation
History of past
measurements
Confirm selection
with key
6.4 Cable length measurement
6.4.1 Preparing the measurement
Connect the cable to be measured to the meter. If you wish to measure a network cable with
RJ45, use the RJ45 socket. If you wish to measure a coaxial cable or measure a cable via the
coaxial adaptors, use the BNC socket. Now use the key to enter the relevant mode,
depending on the connected cable.
It is also possible to make a cable length measurement via the main menu. To do so, select the
upper menu item and confirm your selection with the key.
Now select in the following screen whether you wish to use the RJ45 or the BNC socket to
measure a cable.

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Confirm your selection with the key. As soon as you have entered the mode for cable
length measurements, the screen will look as follows after making a selection:
Measuring mode for coaxial cables and
cables connected to the meter with a
measuring adaptor
Measuring mode for the length
measurement of cables connected to the
RJ45 socket
Important:
Do not measure any current-carrying cables.

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6.4.2 Selecting the cable type
To measure the cable length accurately, it is necessary to select the correct cable type and
propagation velocity of the measuring signal (VOP) prior to the measurement.
1. Press the key to be able to select the cable type from the database of the cable length
tester with the key.
2. The velocity of propagation of the selected cable can only be changed manually for this
measurement. To do so, press and hold the key in measuring mode. In the upper right
part of the display, the VOP value will now be displayed with a black background. This VOP
value can now be changed via the and keys. To confirm the change, short-press the
key.
6.4.3 Cable length measurement
If you have selected the correct cable as described in 6.4.2, you can now make a measurement
by pressing the key. After the cable length measurement, the reading will be displayed. To
leave measuring mode, short-press the key.
6.5 VOP library
To open the VOP library, first go to the menu. Select the menu item “Velocity of propagation“.
Then select “VOP Library“. Then select the library you wish to open. You can select either the
library “Coaxial Cable“ or “Data Cable“.

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As a last step, select your cable with the key.
You can go back to the library by pressing the key. With the key, you can delete the
current cable. To confirm the deletion, press . To cancel the deletion, press the key.

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6.5.1 Pre-set cable types
The cable types pre-set in the PCE-CLT 10 are:
6.5.2 Adding cables of known lengths
Each cable has its own VOP. If the VOP of the cable is unknown, it can be determined by making
a measurement. To do so, the cable length must be know.
To make a measurement, follow these steps:
First connect the cable to be measured. It is recommended to use a cable that is longer than 10
m. Now enter the menu. Select “Velocity of propagation“. Then select “VOP Test“.

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Under “length“, enter the length of the connected cable. You can select a value between 5 …
999 m. To change the value, first press the key to select the box. The value can then be
changed with the keys / . Press to confirm the entered value. The VOP value will
be displayed directly.
In the “Name“ box, you can assign a name to the cable, for instance “NYM 1.5“. Up to six digits
are possible. To select the input field, press the key. With the / keys you can select
the number or letter. You can go to the next digit with the key. Confirm your entry with the
key.
In the “Type“ box, you can select the type of cable. You can choose “Coaxial cable“ or “Network
cable“. To change the value, press the key to select the box. The value can then be
changed with the keys / . Press to confirm the entered value.
In the “Producer“ box, you can enter the manufacturer of the cable. Up to six digits are possible.
To select the input field, press the key. With the / keys you can select the number
or letter. You can go to the next digit with the key. Confirm your entry with the key.
In the “Impedance“ box, you can select the impedance of the cable. You can choose either 51
Ω, 75 Ω or 100 Ω. To change the value, press the key to select the box. The value can then
be changed with the keys / . Press to confirm the entered value.
After making all desired settings, press to save the entered cable to the library.

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6.5.3 Adding cables with known VOP values
If the VOP value of the cable is known, you can add it without making a reference
measurement. First enter the menu. Then select “Velocity of Propagation“ and “VOP Set“.
In the “Name“ box, you can assign a name to the cable, for instance “NYM 1.5“. Up to six digits
are possible. To select the input field, press the key. With the / keys you can select
the number or letter. You can go to the next digit with the key. Confirm your entry with the
key.
In the “Type“ box, you can select the type of cable. You can choose “Coaxial cable“ or “Network
cable“. To change the value, press the key to select the box. The value can then be
changed with the keys / . Press to confirm the entered value.
In the “Producer“ box, you can enter the manufacturer of the cable. Up to six digits are possible.
To select the input field, press the key. With the / keys you can select the number
or letter. You can go to the next digit with the key. Confirm your entry with the key.
In the “VOP“ box, you can enter the known VOP value. To select the input field, press the
key. With the / keys you can select the number or letter. You can go to the next digit
with the key. Confirm your entry with the key.
After making all desired settings, press to save the entered cable to the library.

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6.6 Showing the history
To view the history of the cables last used, first enter the menu. Then select “History“. The
cables last used will be displayed directly for your selection. You can select the desired cable
with the / keys. To confirm your selection, press .
Note: Measured values will not be saved.

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6.7 Settings
Enter the menu to make settings. Select “Setting“.
In this menu, the following settings can be made:
Here you can set the unit. You can select metres “m“ or feet „ft“.
Here you can set the time. Format HH:MM
Here you can set the date. Format JJJJ/MM/TT
Here you can set the time of inactivity after which the meter turns off
automatically. Possible options: 10,20,30,40,50 or 60 minutes
Here you can set the language. Possible options: English or German
With the / keys, you can select an item from the Setting menu. The input field can be
selected with the key. The parameter can now be changed with the / keys. Press
again to go to the next parameter or to confirm your setting. Press the key to confirm
the setting directly.

7 Contact
If you have any questions, suggestions or technical problems, please do not hesitate to contact
us. You will find the relevant contact information at the end of this user manual.
8 Disposal
For the disposal of batteries in the EU, the 2006/66/EC directive of the European Parliament
applies. Due to the contained pollutants, batteries must not be disposed of as household waste.
They must be given to collection points designed for that purpose.
In order to comply with the EU directive 2012/19/EU we take our devices back. We either re-use
them or give them to a recycling company which disposes of the devices in line with law.
For countries outside the EU, batteries and devices should be disposed of in accordance with
your local waste regulations.
If you have any questions, please contact PCE Instruments.
© PCE Instruments
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© PCE Instruments
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PCE Instruments contact information
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