GAIN EXPRESS NF-838 User manual

NF -838
Multipurpose LCD Display Cable Test & Inspection Instrument
INSTRUCTION MANUAL

Find target wire required from numerous
telephone wires and LAN cables
Find target wire required from numerous
telephone wires and LAN cables
Example ⅠExample Ⅱ
Hunt cable in
telephone exchanger
Hunt cable in
distribution frame
Connect launcher and telephone
wire port to be hunted in right way
Hunt at the other end with receiver
Connect launcher and LAN cable
port to be hunted in right way
Hunt at the other end with receiver
Find target wire required from numerous
telephone wires and LAN cables
Find target wire required from numerous
telephone wires and LAN cables
Find target wire required from numerous
telephone wires and LAN cables

Please read and learn safety instructions
before use or maintain the equipment
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Never expose the equipment directly in the sun.
Never put the equipment in the place with much dust, humidity and
high temperature (over 40℃).
Please use battery according to the specification; otherwise, it
may result in damage to equipment.
Please never dismount the equipment arbitrarily. The maintenance
and care shall be conducted by professional personnel.
Please take out the battery in launcher and receiver if th e
equipment is not used for a long time so as to prevent that the
battery liquid is leaked in future.
Never use the equipment to detect power cord with electricity
(such as power supply circuit of 220V), other wise, it may r esult in
damage to equipment and personal injury.
Never conduct related operation of communication line in
thunderstorm weather so as to prevent lightning stroke and
impact on personal safety.

Contents
Brief Introduction..............................................1
Overview...............................................................1
Product features....................................................2
Technical indexes..................................................2
Product Interface and Keypad Functions.......3
Instrument panel and port........................................3
Instructions for LCD display.....................................3
Instructions for product......... .........................4
Wire order test.......................................................4
Test of different cable orders....................................7
Hunting test............................................................8
Other functions.....................................................9
Packing list............................................................9
After-sales service................................................10
Diagram of Series Products..........................11

NF -83 8-M
Cable Tester
Wire Tracker
&
EMITTER
WIREMAP
NF -83 8-S
Overview
NF-838 multipurpose LCD cable test & inspection instrument is the latest inspection
instruction with a number of new functions researched and developed by our company.
The product is composed of emitter (NF-838-M) briefly called launcher, receiver
(NF-838-R) called receiver and remote identifier (NF-838-S) called remote identifier.
The new instrument is provided with fluent appearance, excellent hand feel and
considerate human-centered design. It owns three great functions of hunting, wire
sorting and circuit status testing and the features of quickness and accuracy, thus,
it becomes available tool for technicians in installation and maintenance of weak
current system, such as, communication line, comprehensive wiring circuit,etc.It is
widely applicable to telephone system, computer network, other metal wire circuit
and other fields.
Brief Introduction
The service manual for user here covers all products of NF-838 (all instructions
are suitable for all products as shown in figure below unless there is another
regulation):
Emitter(NF-838-M) Receiver(NF-838-R)
Remo te identifier(NF-838-S)
PUSH TO TES T
Cable Tester
Wire Tra cker
&
RECEIV ER
POWER
NF -83 8-R
VOL
-01-
ON/OFF LIGH T
TEST SCAN

Product features:
LCD, the display effect is more direct, more visual and clearer.
The wire can be hunted directly in connection with Ethernet switch/ router
/PC terminal of different models in startup.
Test 5E, 6E, telephone wire, coaxial cable, USB cable, 1394 line and other
cables for troubleshooting.
Test 5E, 6E, telephone wire, coaxial cable, USB cable, 1394 line and other
cables for troubleshooting.
RJ45/RJ11/BNC/USB/1394 and other ports are included and the complex
switch is not required.
Select startup/shutdown function and backlight display function.
Sound hint function of different circuit status
9V battery for power supply and low-voltage hint function
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Technical indexes
Overall dimension
Emitter: 185x80x32mm; receiver: 218x46x29mm;
Remote identifier: 107x30x24mm
(2) Power
Two laminated batteries of 9V
(3) Display
Large screen LCD segmented display (effective visual area 54x26mm)
(4) Type of cable tested
RJ 45/RJ11/BNC/USB/1394 and other different types
(5) Type of cable detected
RJ 45/RJ11/BNC/USB/1394 and other metal wires
(6) Ambient temperature in work
-10℃~+60℃
(7) Signal transmission distance
More than 3 km
(8) Location of wire order and cable failure
Failure test, open circuit, short circuit, reversed position, crossing and
series winding
(1)
-02-

Product Interface and Keypad Introduction
Instructions for LCD Display
-03-
NF -83 8-M
Cable Tester
Wir e Tracker
&
EMITTE R
WIREMAP
NF- 838 -S
Emitter
Receiver
Remote identifier
PUS H TO TEST
Cable Test er
Wire Trac ker
&
REC EIVER
POWER
NF -838 -R
VOL
BNCRJ45
USB
RJ11
1394
RJ45
BNC
1394
USB RJ11
ON/OFF L IGHT
TEST SCA N

Instructions for product
Press “ON/OFF” key of emitter, the equipment is started with a long sound.
Meanwhile, the default of system is wire order test, LCD “TEST” will flashes for a
while and LCD display is as follows if the cable is not connected.
Wire order test (Take RJ45 as an example)
Test Result1: Short circuit (SHORT)
If there is short circuit of cable or terminal, the emittermay give three short “tick,
tick and tick” sound. Meanwhile, LCD display the picture below: (take 34-short
circuit as example)
At this moment, press “wire sorting” key to conduct test again. If the short circuit
still occurs, please conduct troubleshooting before measuring.
-04-
Open battery cover, install DC 9V battery in launcher, cover the battery cover, press
“ON/OFF” key, and the emitter is started up. One end of RJ45 wire to be tested of
which the plug is pressed shall be connected to RJ45 port of emitter and the other
end is connected to RJ45 port of remote identifier. Slightly touch “wire sorting” key to
test wire order. If the cable has shielding wire (or earthing wire), LCD will display
“STP”; if the cable never has shielding wire (or earthing wire), LCD will display
“UTP”; press “Backlight” key to make backlight source on in dim test environment.
Several test results as follows may occur.

Test Result 2: The remote identifier or cable is not inserted to the emitter,
the launcher gives a “tick” and LCD displays the picture below in the meanwhile:
Test Result 3: Normal wiring map (WIREMAP)
The instrument may conduct automatic detect emitter and remote identifier RJ45
cable. If the wiring is right, the launcher will give a long “tick” and LCD displays the
picture below in the meanwhile.
RJ45 cable without shielding wire
RJ45 cable with shielding wire
-05-

Test Result 4: When there is open circuit of cable
The emitter will give a long “tick” sound and LCD displays the picture below in the
meanwhile:
The picture indicates that “3” “6” line of RJ45 cable is in open circuit.
Test Result 5: When the cable is crossed /disorder
The emitter will give two short “tick, tick” sound and LCD displays the picture below
in the meanwhile:
The picture indicates that “3” “6” line of RJ45 cable is in crossing.
Test Result 6: When the cable is in crossing/disorder and in open circuit in
the meanwhile,The emitter will give two short “tick, tick” sound and LCD displays
picture below in the meanwhile:
The picture indicates that “3” “6” line of RJ 45 cable is in crossing and “2” “7” lines
are in open circuit.
-06-

The normal test result of RJ45 cable order is shown as below:
Test of different cable orders
The normal test result of RJ11 Cable order is shown as below:
The normal test result of 1394 line order is shown as below:
The normal test result of USB cable order is shown as below:
-07-

Normal test result of BNC line is shown as below:
Hunting test
Press “ON/OFF” key of the emitter, the equipment is started up with a long
sound. Slightly touch “hunting” key and enter hunting mode, LCD screen
displays the following in flashing:
-08-
Dismount battery cover of the emitter,install the battery of 9V,cover the battery cover
and press “ON/OFF” key, then the emitter will start working. Connect cable to be
hunted to corresponding port of the emitter (RJ45, RJ11, USB, BNC, 1394 and
others),slightly touch “SCAN” key,enter signal hunting mode and select corresponding
frequency according to the requirement (there are 9 kinds of frequency can be
selected, one kind of frequency signal will be changed when “SCAN” is pressed for
once and the signal frequency type is switched from 1~9 in circulation); then open
battery cover of the receiver, install battery of 9V, cover the battery cover and take
the receiver to hunt target wire (the usage of receiver is s hown in the following) .
Press “backlight” key to make backlight source is on when the test is conducted in
dim environment.
Usage of the receiver
Dismount the battery cover, install battery of 9V, take the receiver with thumb pressing
“PUSH” key, then approach the cable with probe and find target wire required in
numerous cables. When the probe is near target wire, the “beep, beep and beep”
sound may occur and the signal indicator light “POWER” will turn on.Compare volume
of “beep,beep and beep” and luminance of signal indicator light,the wire of which the
sound is the loudest and the signal indicator light is the brightest is target wire required.

-09-
Other functions
1. Emitter 1PCS
2. Receiver 1PCS
4. Laminated battery of 9V 2PCS
5. Earphone 1PCS
7. Alligator clip adaptation line 1PCS
8. RL45 adaptation line 1PCS
6. RJ11 Adapter line 1PCS
9. Service manual 1PCS
10. Kit 1PCS
11. Color box 1PCS
(1) Low-voltage hi nt function
When the battery voltage is low, the low-voltage hint sign“ ”on LCD wi ll
flash and the user shall have the battery replaced at this mo ment.
(2) Earphone function
The earphone can be worn in noisy environment for operation so as to avoid
external interference.
(3) Volume adjustment function
Turn volume adjustment switch on the receiver in hunting to adjust the
volume to the appropriate degree.
(4) Floodlight function
The side floodlight can be started at night or in darkness environment.The
floodlight turns on so as to facilitate your normal operation.
(5) Keypad sound start and stop function
If the user needs to stop keypad sound in test,the user can slightly touch “wire
sorting” and hunting key, the keypad sound is stopped; if the keypad sound is
about to started again, the operations above shall be repeated so that the
keypad sound is started.
3. Remote adapter 2PCS
12. Quality certificate 1PCS
Packing list

-10-

-11-
Diagram of Series Products
NF-308
NF-801RNF-806B
NF-838
NF-866
NF-902 NF-906A NF-3468
NF-8208

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