7. OPERATING INSTRUCTIONS
7-1 Attention before operation
7-1-1 Check battery. When the battery voltage drop below proper operation range, the “
” symbol
will appear on the LCD display and the battery need to changed.
7-1-2 Pay attention to the “
” besides the input jack which shows that the input voltage or current
should be within the specified value.
7-1-3 The range switch should be positioned to desired range for measurement before operation.
7-2 Measuring DC Voltage
7-2-1 Set the rotary switch at the desired “
V
” range position.
7-2-2 Connect the black test lead to
COM
jack and the red to
VΩ
jack.
7-2-3 Connect test leads across the source or load under measurement.
7-2-4 You can get reading from LCD. The polarity of the red lead connection will be indicated along
with the DC voltage value.
NOTE:
1. When the value scale to be measured is unknown beforehand, set the range selector at the highest position.
2. When only the figure “1” or “-1” is displayed, it indicates over-range situation and the higher range has to be selected.
3. “
” means you can’t input the voltage more than 1000V, it’s possible to show higher voltage, but it
may destroy the inner circuit or pose a shock.
4. Be cautious against shock when measuring high Voltage.
7-3 Measuring AC Voltage
7-3-1 Set the rotary switch at the desired “
V
” range position.
7-3-2 Connect the black test lead to
COM
jack and the red to
VΩ
jack.
7-3-3 Connect test leads across the source or load under measurement.
7-3-4 You can get reading from LCD.
NOTE:
1. When the value scale to be measured is unknown beforehand, set the range selector at the highest position.
2. When only the figure “1” or “-1” is displayed, it indicates over-range situation and the higher range has to be selected.
3. “
” means you can’t input the voltage more than 750V, it’s possible to show higher voltage, but it
may destroy the inner circuit or pose a shock.
4. Be cautious against shock when measuring high Voltage.
7-4 Measuring DC Current
7-4-1 Set the rotary switch at the desired “
A
” range position.
7-4-2 Connect the black test lead to
COM
jack and the red to the
mA
jack for a maximum 200mA
current , for a 200mA to 10A current, move the red lead to the
10A
jack.
7-4-3 Connect test leads in series with the load under measurement.
7-4-4 You can get reading from LCD. The polarity of the red lead connection will be indicated along
with the DC current value.
NOTE:
1. When the value scale to be measured is unknown beforehand, set the range selector at the highest
position.
2. When only the figure “1” or “-1” is displayed, it indicates over-range situation and the higher range has
to be selected.
3. “
” means the socket mA’s maximum current is 200mA and 10A’s maximum current is 10A, over
200mA or 10A current can be protected by the fast fuse.
4. On the 10A range, the measuring time should be less than 10 seconds to prevent precision from
affecting by circuit heating.
7-5 Measuring AC Current
7-5-1 Set the rotary switch at the desired “
A
” range position.
7-5-2 Connect the black test lead to
COM
jack and the red to the
mA
jack for a maximum 200mA
current , for a 200mA to 10A current, move the red lead to the
10A
jack.
7-5-3 Connect test leads in series with the load under measurement.
7-5-4 You can get reading from LCD.
NOTE:
1. When the value scale to be measured is unknown beforehand, set the range selector at the highest
position.
2. When only the figure “1” or “-1” is displayed, it indicates over-range situation and the higher range has
to be selected.
3. “
” means the socket mA’s maximum current is 200mA and 10A’s maximum current is 10A, over
200mA or 10A current can be protected by the fast fuse.
4. On the 10A range, the measuring time should be less than 10 seconds to prevent precision from
affecting by circuit heating.
7-6 Measuring Resistance
7-6-1 Set the rotary switch at the desired “
Ω
” range position.
7-6-2 Connect the black test lead to
COM
jack and the red to
VΩ
jack.
7-6-3 Connect test leads across the resistance under measurement.
7-6-4 You can get reading from LCD.
NOTE:
Max. input overload: 500V rms
＜
10sec
1. When only the figure “1” or “-1” is displayed, it indicates over-range situation and the higher range
has to be selected.
2. For measuring resistance above 10MΩ, the mete may take a few seconds to get stable reading.
3. When the input is not connected, i.e. at open circuit, the figure “1” or “-1” will be displayed for the
over-range condition.
4. When checking in-circuit resistance, be sure the circuit under test has all power removed and that
all capacitors have been discharged fully.
7-7 Diode & Audible continuity Testing
7-8-1 Set the rotary switch at the “
” range position.
7-8-2 Connect the black test lead to
COM
jack and the red to
VΩ
jack.
7-8-3 On
diode
range, connect the test leads across the diode under measurement, display shows
the approx. forward voltage of this diode.
7-8-4 On
Audible continuity
range, connect the test leads to two point
of circuit, if the resistance is lower than approx. 50Ω, the buzzer sounds.
NOTE:
Make sure the power is cut off and all capacitors need to be discharged under this
measurement.
7-8 Battery Testing
7-8-1 Set the rotary switch at the desired “
” range position.
7-8-2 Connect the black test lead to
COM
jack and the red to
mA
jack.
7-8-3 Connect test leads across the source or load under measurement.
7-8-4 You can get reading from LCD.
7-9 Telephone Line (RJ11) Testing
7-9-1 Open the cover of the network test on the top of the instrument by a screwdriver, take out the
test cover, and keep the screw well as we need the screw on after finish checking.
7-9-2
Set the rotary switch at the “
” range position,
the
“
” symbol will display on the LCD
screen.
7-9-3 Connect the telephone line with the test hole (RJ11) on the top of the instrument and make sure
it is good connection.
7-9-4 Connect the other side of the telephone line with SPC telephone exchange.
7-9-5 Press “
TEST
” key, if shows “
PASS
”, then the telephone line working normally, if shows “
FAULT
”,
the telephone line is abnormal.
7-10 Network Cable (RJ45) Testing
Warning
：
Please do not use this function in the condition of alive circuit, or it will damage the
instrument.
Network cable testing function is suitable for network cable which is T168A, T568B, 10Base-T and
Token Ring. It can find out the error cables and show on the cables symbol and their problem. If few
cables have error, all the error and cables symbol will display on the screen first, and press “TEST”
key one by one, cables symbol and its error detail will show on the screen one by one. You should
eliminate the error connections one by one until all the cable connection is correct.
Open Circuit:
There is no indicating symbol for
open circuit in this instrument. Normally there is 2
～
4
pair of twisted pair on a typical network, the symbol of cable which is open circuit will not display on
the screen, user should identify which symbol should be or should not be displayed on the screen
according to the true situation. If the cables symbol should be display but it did not, then means this
cables are open Circuit.
Short Circuit:
There is short connection among cables (Figure 1).
Miswire:
One side of two cables are wrong (Figure 2).
Reversed:
One side of cable is reverse (Figure 3).
Split pairs:
As wrong operation, a line of cable twine to other cable line
while
pressing the line
(Figure 4).
7-10-1 Open the cover of the network test on the top of the instrument by a screwdriver, take out the
test cover, and keep the screw well as we need the screw on after finish checking.
7-10-2
Set the rotary switch at the “
” range position,
the
“
” symbol will display on the
LCD screen.
7-10-3 Connect the network cable with the test hole (RJ45) on the top of the instrument and make
sure it is good connection.
7-10-4 Connect the other side of the network cable with network cable remote.
7-10-5 Press “
TEST
” key. For example: a network cable error conditions as follows:
1-2
、
3-6
are
short
circuit,
“
1-2
”
、
“
3-6
”
、
“
4-5
”
、
“
7-8
”
、
“
SHIELD
” and “
SHO.
” will display on the screen.
7-10-6 Press “
TEST
” key again, “
1-2
”
、
“
3-6
” and “
SHO.
”
will display on the screen, keep press “
TEST
”
key, the result of next pair of cable will display on the screen.
8. Battery replacement
8-1 When the battery voltage drop below proper operation range the "
" symbol will appear on the
LCD display and the battery need to changed.
8-2 Before changing the battery, power off the meter and remove the test leads from the terminals.
Open the cover of the battery cabinet by a screwdriver.
8-3 Replace the old battery with the same type battery (9V 6F22 or NEDA 1604).
8-4 Close the cover of the battery cabinet and fasten the screw.
9. Fuse replacement
9-1 This meter is provided with a 200mA/500V fast fuse to protect the battery test and the current
measuring circuits which measure up to 200mA, with a 10A/500V fuse to protect the 10A range.
9-2 Ensure the meter is not connected to any external circuit, power off the meter and remove the test
leads from the terminals. Open the bottom case by a screwdriver.
9-3 Replace the old fuse with the same type and rating: 6× 30mm 200mA/500V fast fuse or 6× 30mm
10A/500V fast fuse.
9-4 Close the bottom case and fasten the screw.
10. Maintenance
10-1 Before attempting to remove the battery door or open the case, be sure that test leads have been
disconnected from measurement circuit top avoid electric shock hazard.
10-2 You must replace the test leads if the lead is exposed, and should adopt the leads with the same
specifications as origin.
10-3 Use only moist fabric or small amount of detergent but not chemical solution for cleaning.
10-4 Do not use the meter before the back cover is properly closed and screw secured. Upon any
abnormality, stop operation immediately and send the meter for maintenance.
10-5 Please take out the battery when not using for a long time.
11. Accessories
[1] Test Leads: electric rating 1000V 10A
[2] Operator’s Manual
[3] Network Cable Remote
Above picture and content just for your reference. Please be subject to the
actual products if anything different or updated. Please pardon for not
informing in advance.
