APPA 103N Digital Multimeter User Manual
- October 30, 2023
- APPA
Table of Contents
APPA 103N Digital Multimeter
WARNING
THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY.
TO AVOID ELECTRIC SHOCK, DO NOT PERFORM ANY SERVICING OTHER THAN THAT
CONTAINED IN THE OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO.
INTRODUCTION
Unpacking and Inspection
Upon removing your new Digital Multimeter from its packing, you should have the following items:
- Digital Multimeter.
- Test lead set (one black, one red).
- Instruction manual.
- Protective holster.
- K Type Temperature Sensor. (106 only)
- Sensor Adaptor. (106 only)
Meter Safety
Terms as Marked on Equipment.
ATTENTION — Refer to manual.
DOUBLE INSULATION — Protection Class II.
DANGER — Risk of electric shock
Symbols in this Manual.
This symbol indicates where cautionary or other information is found in the
manual.
FUSE
Battery
Front Panel
Refer to Figure 1 and to the following numbered steps to familiarize yourself with the meter’s front panel controls and connector.
- Digital Display — The digital display has a 4000 counts LCD readout with 82 segments analog bar graph, auto polarity, decimal point, “ “ AC, DC, , , RANGE,
**H**, APO, REL, MAX, MIN, PMAX, PMIN and unit annunciators. (PMAX, PMIN, REL are 105N / 106 only). - Rotary Switch — Select the Function and Range desired.
- COM Input Terminal — Ground input connector.
- °C °F VΩ Hz Input Terminal — Positive input connector for Volts, Ohms Capacitance, Frequency and Temperature.
- mA Input Terminal — Positive input connector for Amp measurements (up to 400mA).
- A Input Terminal — Positive input connector for Amp measurements (up to 10A).
Push Switch Functions ( “MIN/MAX” and “PeakH” and “Rel “ switch are for 105N / 106 only)
Push switch functions control the special measurement modes of the meter. Some special modes can be nested in other special modes, while some push functions reset all existing special mode. The following table summarizes the push functions in each special mode.Active mode| Push Switch Functions
---|---
RANGE1| BLUE KEY1| HOLD H| REL| MIN/ MAX| PEAK**H**| ∿ Hz2
HOLD| | | | ?|
?
|
?
|
?
REL| | | | | |
?
|
?
MIN/MAX HOLD| | | |
?
| |
?
|
?
PEAK HOLD| | | |
?
|
?
| |
?
∿ HZ| |
?
| |
?
|
?
|
?
|
Note :
1. BLUE KEY switch and RANGE Switch resets all special modes other than ∿ HZ
mode .
2. ∿ HZ switch is only used to toggle between frequency measurement mode
and voltage or current measurement mode, and thus can not be nested in any
other special modes.
3. The bar graph always shows the current value, regardless of special
mode.
-
Light switch — Press the switch to turn on or turn off the back-light.
-
8. ∿ HZ — If “ ∿ HZ” switch is pushed in voltage or current measurement mode, the meter enters frequency counter mode with automatic range selection. Therefore, pressing “RANGE” switch in HZ mode does not change the frequency range.
However, “RANGE” switch changes the sensitivity of frequency detection. If the input signal has a small amplitude, the user shall increase the sensitivity.
Note : Since HZ mode is treated as a temporary frequency measurement in voltage or current mode, pressing
“RANGE” switch in HZ mode also changes the full scale range of the original voltage or current mode after VAHZ mode is cancelled. -
PEAK
H— The precision of PEAK hold mode measurement can be enhanced by calibration. Calibration for PEAK hold mode is invoked by pressing “PEAK**H**” switch for more than 2 seconds until the “caL” is displayed. Pressing the “ Peak**H**” switch to toggle between PMAX and PMIN. Pressing “Peak H ” switch and held for longer than one second to release the peak hold mode. -
. Range Switch, (Manual Range) — “Range” switch is pressed to select manual ranging and to change ranges. When “Range” switch is pressed on “RANGE” annunciator on the LCD appears.
Press “RANGE” switch to select appropriate range to be used.
Press “RANGE” switch and hold for 2 seconds to return to Autoranging. In “ ∿ HZ” mode “RANGE” is not used to change the full scale frequency range, but change the sensitivity of frequency measurement. -
Blue Switch — Press the switch to measure AC Voltage / Current or DC Voltage / Current in the voltage / Current mode, or to measure Resistance or continuity or diode in mode or to measure Frequency or RPM in RPM in Hz / PRM mode.
-
MIN MAX — The meter displays the maximum or minimum value of the input in MAX / MIN mode. When “MIN MAX “ switch is pressed for the first time, the meter displays the maximum value. When “MIN MAX” switch is pressed again, the meter displays the minimum value.
When “MIN MAX” switch is pressed for the third time, the meter displays current input value and the “MAX” “MIN” annunciator are blink. The meter returns to normal
operation if “MIN MAX” switch is pressed and held for longer than one second. Pressing HOLD in MAX/MIN mode makes the meter stop updating the maximum or the minimum value. -
REL — In REL mode, the LCD panel displays D(current) – D(relative), where D(relative) is the last value before “REL ” switch is pressed, and D(current) is the current value. If “REL ” switch is pressed again in REL mode, the meter displays the reference value and the “REL” annunciator is blink. The meter returns to normal operation if “REL ” switch is pressed and held for longer than one second. Pressing “HOLD
H” switch in REL mode makes the meter stop updating the LCD panel. REL with MIN MAX — MAX / MIN mode can be nested in REL mode. The “MIN MAX’ meter displays the maximum or the minimum value relative to the reference when “MIN MAX” is pressed in REL mode. Before release the REL function, the MAX/MIN function is needed to release first. -
HOLD — HOLD mode makes the meter stop updating the LCD panel. This mode can be nested in most of the special modes. Enabling HOLD function in automatic mode makes the meter switch to manual mode, but the full scale range remains the same. HOLD function can be released by changing the measurement mode, pressing “RANGE” or “BLUE KEY” or push HOLD again. When HOLD mode is nested in Peak
Hor MIN / MAX or REL mode to release the Peak**H**or MIN / MAX or REL function is needed to release HOLD function first.
SPECIFICATIONS
General Specifications
Display : The Liquid Crystal Display (LCD) with a maximum reading of 4000
and 82 segments bar graph.
Polarity Indication : Automatic, positive implied, negative indicated.
Overrange Indication : “OL” or “-OL”.
Low Battery Indication : “ “ is displayed when the battery voltage drops
below operating voltage.
Sampling : 2 times/sec for digit. 12 times/sec for analog bargraph.
Auto Power Off : Approx 30 minutes.
Operating Ambient : 0°C to 30°C (≤ 80%R.H),
30°C to 40°C (≤ 75%R.H),
40°C to 50°C (≤ 45%R.H).
Storage Temperature : -20°C to 60°C , 0 to 80% R.H.
when battery removed from meter.
Temperature Coefficient :
0.15 x (Spec.Acc’y) / °C , <18°C or > 28°C.
Power Requirements :
IEC LR03, AM4 or AAA size 1.5V x 2. (103N / 105N)
Standard 9V battery NEDA 1604, IEC6F22, JIS 006P.(106N)
Battery Life : Alkaline 500 hours. (103N / 105N), Alkaline 300 hours.
(106)
Dimensions (W x H x D) : 90mm x 200mm x 42mm , without holster. 100mm
x 212mm x 55mm , with holster
Accessories : Protective Holster , battery, instruction manual, test lead
Environmental Conditions
Indoor use.
Maximum Altitude : 2000 Meter.
Pollution Degree : 2
Installation Category : EN61010-1,EN61010-2-033, 1000V Cat.II, 600V
Cat.III.
| CAT Application Field | Application Field |
|---|---|
| I | The circuits not connected to mains. |
| II | The circuits directly connected to Low-voltage installation. |
| III | The building installation. |
| IV | The source of the Low-voltage installation. |
Electrical Specifications
Accuracy is ± (% reading + number of digits) at 23°C ± 5°C , less than 80% R.H.
- DC Volts
** Input Impedance :** 10MΩ . (over 1000MΩ in 400mV range).Range| Resolution| Accuracy| Over voltage protection
---|---|---|---
400mV| 100μV| ±(0.3%reading + 2digits)| 2digits) 400mV 100μV 40V 10mV 4V 1mV 400V 100mV 1000V 1V ±(0.3%reading + 2digits)| 1000V rms
4V| 1mV| ±(0.4%reading + 2digits)| ±(0.1%reading + 2digits)
40V| 10mV| ±(0.25%reading + 2digits)
400V| 100mV
1000V| 1V - AC Volts**
**Range| Resolution| Accuracy| Over voltage protection
---|---|---|---
N 105N / 106 ±| 105N / 106
400mV| 0.1mV| ±(2.0%reading + 8digits)| ±(2.0%reading + 8digits| 1000V rms
4V| 1mV| ±(1.3%reading + 5digits)**|
40V| 10mV| ±(1.5%reading + 5digits) 40Hz to 60Hz ±(1.3%reading + 5digits) 60Hz to 1KH| *** ±(1.5%reading + 5digits) 40Hz to 60Hz ±(1.0%reading + 5digits) 60Hz to 1K
400V| 100mV
750V| 1V
AC Conversion Type :
103N / 105N : Average sensing rms indication.
106 : AC conversions are ac-coupled, true rms responding, calibrated to the
rms value sine wave input.
The specified accuracy is for since wave at full scale and non-sine wave at
half scale below 500Hz with crest factor up to 2.
Input impedance : 10MΩ // less than 100PF.
* Frequency Response : 50Hz to 60Hz. ** Frequency Response :** 40Hz to
300Hz.
*** Frequency Response : 40Hz to 500Hz for 4V Range.
AC Conversion Type :** AC conversions are average sensing , calibrated to
the rms value sine wave input.
- DC Current
Range| Resolution| Accuracy| Voltage Burden
---|---|---|---
103N| 105N / 106
40mA| 10μA| ±(0.6%reading + 2digits)| ±(0.4%reading + 2digits)| 300mV max
400mA| 0.1mA| ±(0.7%reading + 2digits)| ±(0.5%reading + 2digits)| 3V max
10A| 10mA| ±(1.2%reading + 3digits)| ±(1.0%reading + 3digits)| 3V max
Overload Protection : 1A , 600V IR 10KA fuse (Bussmann BBS-1 or
equivaknt) for
mA input. (Size 10.3mm x 34.9mm)
15A , 600V IR 100KA fuse (Bussman KTK 15 or equivalent)
for A input. (Size 10.3mm x 38.1mm
- AC Current
**** Range| Resolution| Accuracy| Voltage Burden
---|---|---|---
103N| 105N / 106
40mA| 1μA| ±(1.5%reading + 5digits)| ±(1.5%reading + 5digits)| 300mV max
400mA| 0.1mA| 3V max
10A| 10mA| ±(2.5%reading + 5digits)| (2.0%reading + 5digits)| 3V max
Frequency Response : 40Hz to 1KHz.
AC Conversion Type :
103N / 105N : Average sensing rms indication.
106 : AC conversions are ac-coupled, true rms responding, calibrated to
the rms value sine wave input.
The specified accuracy is for since wave at full scale and non-sine wave at
half scale below 500Hz with crest factor up to 2.
Overload Protection : 1A , 600V IR 10KA fuse (Bussmann
BBS-1 or equivaknt) for mA input. (Size 10.3mm x 34.9mm)
15A , 600V IR 100KA fuse (Bussman KTK 15 or equivalent)
for A input. (Size 10.3mm x 38.1mm)
AC Conversion Type : AC conversions are average sensing, calibrated to
the rms value sine wave input.
- Resistance
**** Range| Resolution| Accuracy| Over voltage protection
---|---|---|---
103N| 105N / 106
400Ω| 0.1Ω| ±(0.7%reading + 3digits)| ±(0.7%reading +
3digits)
| 600V rms
4KΩ| 1Ω| ±(0.6%reading +3digits)| ±(0.4%reading +
2digits)
40KΩ| 10Ω
400KΩ| 100Ω
4MΩ| 1KΩ| ±(0.7%reading + 3digits)| ±(0.6%reading + 3digits)
40MΩ| 10KΩ| ±(1.5%reading + 5digits)| ±(1.5%reading + 5digits)
Open circuit Voltage : -1.3V approx. **
- Diode Check and Continuity
Range| Resolution| Accuracy| Max. Test Current Current| Max. Open Circuit Circuit Voltage
---|---|---|---|---
| 1mV| ±(1.5%reading + 5digits)*| 1.5mA| 3V
For 0.4V — 0.8V.
Overload Protection : 600V rms max.
Continuity : The internal sounder operates when resistance is less than
30Ω approximately
-
Frequency **/ RPM
**
| Range | Resolution | Sensitivity | Accuracy | Over voltage protection |
|---|---|---|---|---|
| 4.0KHz/40KRPM | 1Hz/30RPM | 600V rms | ||
| 40KHz/400KRPM | 10Hz/300RPM | 150mV rms ≥ 20Hz 1.5V rms ≤ 20Hz | Frequency : |
±(0.01%reading + 1digit)
400KHz/4MRPM| 100Hz/3KRPM
4MHz/40MRPM| 1KHz/30KRPM| 300mV rms| RPM : ±(0.01%reading + 10digits)
40MHz/
400MRPM
| 10KHz/
300KRPM
| 1V rms
- 400MHz/ 4000MRPM| 100KHz/
3MRPM
| |
-
For 105N / 106 only.
-
- The spec is not guaran
- Capacitance
** Range| Resolution| Accuracy| Overload Protection*
---|---|---|---
4nF| 1pF| ±(3%reading + 10digits)| 600V rms
40nF| 10pF| ±(2%reading + 8digits)
400nF| 100pF
4μF| 1nF
40μF| 10nF
400μF| 100nF
4mF| 1μF| * ±(5%reading + 20digits)
40mF| 10μF
-
In these two ranges the reading maybe rolling within specification.
** Specify reading < half of full scale range .- Temperature (°C )
- Temperature (°C )
| Temperature | Accuracy | Overload Protection |
|---|---|---|
| -20°C — 0°C | ±(2%reading + 4°C ) | 600V rms |
| 1°C — 100°C | ±(2%reading + 4°C ) | |
| 1°C — 100°C | ±(2%reading + 3°C ) | |
| 1°C — 100°C | ±(3%reading + 2°C ) |
For 106 only.
- Temperature (°F )
Temperature| Accuracy| Overload Protection
---|---|---
-4°F — 32°F| ±(2%reading + 8°F)| 600V rms
33°F — 212°F| ±(1%reading + 6°F)
213°F — 932°F| ±(2%reading + 6°F)
933°F — 1472°F| ±(3%reading + 4°F)
For 106 only.
- PEAK HOLD
Function| Range| Accuracy| Function| Range| Accuracy
---|---|---|---|---|---
DCV| 400mV| Unspecified| DCV| 40mA 3| ±(3%reading +60digits)
4V| ±(1.5%reading +300digits) 2| 400mA 3*
40V| ±(1.5%reading
+60digits)
| 10A 3| ±(1.5%reading +60digits)
400V
1000V
ACV| 400mV| Unspecified| ACV| 40mA 3| ±(3%reading +60digits)
4V| ±(1.5%reading
+300digits) 2*
| 400mA 3*
40V| ±(1.5%reading
+60digits)
| 10A 3*| ±(1.5%reading
+60digits)
400V
750V
Note :
1. With zero calibrated before measurement.
2. * 4V range specifies readings above 10% of full scale of range.
3. * Amp ranges specify reading <90% of full scale of range.
4. In the noise generating field, may affect intervals.-
Auto Power Off (APO)
The APO sign on the LCD panel indicates the meter is working in the Auto Power Off mode. If the meter idles for more than 30 minutes, the meter automatically turns the power off. When this happens, the state (non-logic measurement) of the meter is saved, the meter can be turned back on by pushing any key switch, except back light switch, or changing the rotary switch. If the meter is Re- Powered on by pushing key switch, the LCD displays the saved state when meter auto power off itself, pushing Hold key switch to disable the hold state. The meter will give periodic alarm in 15 seconds before automatically turns power off by itself, any key press or rotary change reset Auto-Power-off. -
Disable Auto Power Off
In order to disable auto power off function, power on the meter with pressing anyone of switches, except HOLD switch, back light switch or BLUE switch (for function change) is pressed down. -
RS232
Sent a single command string “H” ( Hex code “48” ) to the multimeter or shine the flashlight on the RS232 socket of the meter to enable or disable the RS232. When enable the RS232 the LCD display shows the RS232 annunciator.
The serial data is send from RS232 cable twice every A/D conversion cycle. The data format complies with JIS 7BIT transmission code with a baud rate of 2400. The user can use RS232 interface to read the data. A single dada packet includes a start bit (always 0), 7 data bits, an odd parity check bit, and a stop bit (always 1). The following figure shows
One data block consists of 11 packets, or 110 bits. The following figure shows the format of a data block. The range packet indicates the full scale range of the meter. Digit 3 through digit 0 is just the digits on the LCD panel. The function packet indicates the measurement mode of the meter. Status, option 1 and option 2 gives the status of the meter. CR and LF are delimiters used to separate the blocks.
The meter always outputs the current input value to the serial port.
Each block is repeated twice in one conversion cycle. The detailed data format of each packet is listed below -
FUNCTION
This packet indicates the measurement mode of the meter.
The following table summaizes the transmitted code for each mode.Code| Measurement Mode
---|---
0111011| Voltage
0111101| μA Current
0111001| mA Current
0111111| A Current
0110011| Ω
0110101| Continuity
0110001| Diode
0110010| Frequency / RPM1
0110110| Capacitance
0110100| Temperature2
Note :
1. The Judge bit in the Status packet determines whether it is frequency
mode or RPM mode.
2. The Judge bit in the Status packet determines whether the unit is
Celsius or Fahrenheit.
2. **RANGE This packet indicates the full scale range of the meter.
When the meter operates in continuity mode, diode mode, or current (A) mode,
this packet is always 0110000 since the full scale range in these modes are
fixed. The following table lists the code for each range in each measurement
mode. Code| V| mA| Ω| Frequency| RPM|
Capacitance
---|---|---|---|---|---|---
0110000| 400.0mV| 40.00mA| 400.0Ω| 4.000KHz| 40.00KRPM| 4.000nF
0110001| 4.000V| 400.0mA| 4.000KΩ| 40.00KHz| 400.0KRPM| 40.00nF
0110010| 40.00V| | 40.00KΩ| 400.0KHz| 4.000MRPM| 400.0nF
0110011| 400.0V| | 400.0KΩ| 4.000MHz| 40.00MRPM| 4.000μF
0110100| 4000V| | 4.000MΩ| 40.00MHz| 400.0MRPM| 40.00μF
0110101| | | 40.00MΩ| 400.0MHz| 4000MRPM| 400.0μF
0110110| | | | | | 4.000mF
0110111| | | | | | 40.00mF
3. DIGIT 3 — DIGIT 0
Digit 3 is the most significant digit on the LCD panel, and digit 0 is the
least significant digit. When the LCD panel shows OL, the serial port outputs
4000. Digit| Code
---|---
0| 0110000
1| 0110001
2| 0110010
3| 0110011
4| 0110100
5| 0110101
6| 0110110
7| 0110111
8| 0111000
9| 0111001
4. STATUS
The format of this packet is shown below. The Judge field is meaningful
only when the Function packet indicates Frequency / RPM mode .
In Frequency / RPM mode, judge is 0 if the meter operates in Frequency mode;
otherwise, it is 1. Sign field indicates whether the minus sign on the LCD
panel is on or off. BATT field is 1 if battery low condition is true. OL
indicates input overflow0| 1| 1| Judge| Sign| BATT| OL
---|---|---|---|---|---|---
Bit 6| Bit 5| Bit 4| Bit 3| Bit 2| Bit 1| Bit 0
5. OPTION 1
This packet contains information on special measurement modes. The format
of this packet is shown below. The three non-constant fields is set to one
when the meter operates in the corresponding special modes.0| 1| 1| PMAX|
PMIX| 0| VAHZ
---|---|---|---|---|---|---
Bit 6| Bit 5| Bit 4| Bit 3| Bit 2| Bit 1| Bit 0
6. OPTION 2
This packet contains information on the operation mode of the meter. The
format is shown below. The DC field indicates that the meter operates in DC
measurement mode, either voltage or current. The AC field indicates that the
meter operates in AC measurement mode. The AUTO field is set to 1 if the meter
operates in automatic mode, and is set to 0 when the meter operates in manual
mode. The APO field indicates whether auto power off function is enabled or
not.0| 1| 1| DC| AC| AUTO| APO
---|---|---|---|---|---|---
Bit 6| Bit 5| Bit 4| Bit 3| Bit 2| Bit 1| Bit 0
7. CR
** Carriage return. The transmitted code is 0001101.
8. **LF** Line feed. The transmitted code is 0001010.
- ∼ Hz Sensitivity
The sensitivity in the Hz mode is 1/10 of full scale range.
The accuracy is same as Frequency mode. The measuring frequency is from 40Hz up to 1KHz.
OPERATION
This instrument has been designed and tested in accordance with IEC Publication 1010, Safety Requirements for Electronic Measuring Apparatus and has been supplied in a safe condition. This instruction manual contains some Information and warnings which have to be followed by the user to ensure safe operation and to retain the instrument in safe condition.
Preparation and Caution before Measurement
- Before measurement, warm up for at least 60 seconds.
- When the rotary function selector is changed during measurement, be sure do so only after removing the test leads from the equipment.
- If the equipment is used near noise generating equipment, be aware that may become unstable or indicate large errors.
- Maximum rated voltage to earth for voltage and current measurements terminals is 1000V CAT.II, 600V C , 600V CAT.III .
Voltage Measurements
- Connect the red test lead to the “ VΩHz” input terminal and the other (black) test lead to the “COM” terminal.
- Set the rotary function to the VA position.
- Measurement of AC voltage can be performed by pushing the “BLUE” key switch.
WARNING
TO AVIOD ELECTRICAL SHOCK, HAZARD OR DAMAGE TO METER, DO NOT A ATTEMPT TO MEASURE VOLTAGE THAT MIGHT EXCEED 1000V ms. DO NOT APPLY MORE THAN 1000V rms BETWEEN THE COMMON INPUT TERMINAL AND EARTH GROUND.
NOTICE
UNSTABLE DISPLAY MAY OCCUR ESPECIALLY AT 400mV RANGE, EVEN THOUGH YOU DON’T PUT TESTED LEADS INTO INPUT TERMINALS. IN THIS CASE, IF AN ERRONEOUS READING IS SUSPECTED, SHORT THE “ VΩHz” TERMINAL AND THE “COM” TERMINAL, AND MAKE SURE THE ZERO DISPLAY.
Current Measurements
- Connect the red test lead to “mA” terminal and the other (back) test lead to “COM” terminal, or use the “A” and “COM” terminal in the 10A range.
- Set function selector rotary switch to “ mA “ or “ A ” .
- Measurement of AC current can be performed by pushing the “BLUE” switch.
- Connect the test leads to the circuit to be measured.
Resistance Measurement
- Connect the red test lead to the “ ” terminal and the other (black) test lead to the “COM” terminal.
- Set the rotary function selector to “ ” position to measure the resistance.
- For correct reading, ensure that the device being tested contains no voltage.
- Connect the test leads across the resistor to be measured.
In order to ensure the best accuracy in measurement of low resistance, short the test leads before measurement and memorize the test probe resistance in mind. This is necessary to subtract for the resistance of the test leads themselves.
Continuity Check by Buzzer
- Connect the red test lead to the “ ” terminal and the other (black) test lead to the “COM” terminal.
- Set the rotary function selector to “ ” position.
- Connect the test leads to the circuit to be measured. The internal sounder operates if the resistance of the circuit measured is lower than 30Ω approximately.
Diode Check
- Set the rotary switch at “ ” position.
- Connect black test lead to “COM” terminal and red lead to “ VΩHz ” input terminal.
- Connect test leads to the diode normally the forward voltage drop of good silicon diode is shown between. 400V to 0.900V.
If the diode under test is defective. “0.000” (short circuit) or “OL” (non- conductance) is displayed. Reverse check of diode if the diode under test is defective “0.000” or other value are to be displayed.
Hz / RPM Measurements
- Connect the red test lead to the “ VΩHz ” terminal and the other (black) test lead to the “COM” terminal.
- Set the rotary function selector to “Hz RPM” position to measure the frequency or RPM with the blue switch.
- Connect the test leads to the circuit to be measured.
Capacitance Measurement
- Connect the red test lead to the “ ” terminal and the other (black) test lead to the “COM” terminal.
- Set the rotary function selector to “ ” position to measure capacitance.
- Connect the test leads to the circuit to be measured.
- In order to ensure the best accuracy in measurement of low capacitance, open the test leads before measurement and memorize the test probe capacitance in mind. This is necessary to subtract for the capacitance of the test probe themselves or use the relative mode for 105N.
MAINTENANCE
WARNING :
TO AVOID ELECTRICAL SHOCK REMOVE TEST LEAD BEFORE OPENING THE COVER
Maintenance and Cleaning
- Do not attempt to repair this Tester. It contains no user-serviceable parts. Repair or serving should only be performed by qualified personnel.
- Periodically wipe the case with a dry cloth and detergent do not use abrasives or solvents.
Battery Installation or Replacement
The meter is powered by 1.5V x 2 battery. Refer to Figure 2 and use the following procedure to replace the battery:
- Disconnect the test leads and turn the meter off. Remove the test leads from the front terminals.
- Position the meter face down. Remove the screws from the battery case bottom.
- Lift the end of the battery case bottom until it gently unsnaps from the case bottom.
- Lift the batteries from the battery case top and carefully disconnect the battery connector leads.
- Snap the battery connector leads to the terminals of a new battery and reinsert the battery into the case top. Make sure that the battery leads do not become pinched between the case bottom and case top.
- Replace the case top and battery case.
Fuse Replacement
Refer to Figure 3 and the following procedure to examine or replace the meter’s fuse:
- Perform steps 1 though 3 of the battery replacement procedure.
- Than remove the two screws from the case bottom and lift the case bottom until it gently unsnaps from the case top.
- Remove the defective fuse by gently prying one end of the fuse loose and sliding the fuse out of the fuse holder.
- Install a new fuse of same size and rating. Make sure the new fuse is centered in the fuse holder.
- Replace the case top and case bottom and battery case bottom. Make sure that the battery leads do not be come pinched between the case halves. Reinstall the three screws.
HOW TO USE THE PROBE HOLDER
-
Clip one probe on the holder for one handed meter operation.
-
Wrap the test leads around the holster to store the test probes.
HOW TO USE THE TILT STAND AND HOLSTER
-
Swing the stand out for easier meter reading.
-
Swing the upper holder out and hook it over a door.
-
Meter in holster face down.
-
Hang on nail at workbench. **
**
Limited Warranty
This Meter is warranted to the original purchaser against defects in material
and workmanship for 3 year from the date of purchase. During this warranty
period, manufacturer will, at its option, replace or repair the defective
unit, subject to verification of the defect or malfunction.
This warranty does not cover fuses, disposable batteries, or damage from
abuse, neglect, accident, unauthorized repair, alteration, contamination, or
abnormal conditions of operation or handling.
Any implied warranties arising out of the sale of this product, including but
not limited to implied warranties of merchantability and fitness for a
particular purpose, are limited to the above. The manufacturer shall not be
liable for loss of use of the instrument or other incidental or consequential
damages, expenses, or economic loss, or for any claim or claims for such
damage, expense or economic loss. Some states or countries laws vary, so the
above limitations or exclusions may not apply to you.
Customer Service
www.appatech.com
APAC
MGL APPA Corporation
[email protected]
Flat 4-1, 4/F, No. 35,
Section 3 Minquan East Road,
Taipei, Taiwan
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700019907 JULY 2021 Vl
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