Haoqi LCR-T7H Multifunction Tester

Model: LCR-T7H (V1.1E)

Overviews

160*128 TFT Display
Multifunction key
Transistor test area
Zener Diode test area
IR receiver window
Micro USB Charging Interface
Charge indicator LED
IR RC Detector

Features

The Haoqi LCR-T7H is a TFT graphic display Multifunction Tester.

Transistor Tester

Automatic detection of NPN and PNP bipolar transistors, N-channel and P-channel MOSFETs, JFETs, diodes (including double diodes), N-and P-IGBTs, resistors (including potentiometers), inductors, capacitors, thyristors, triacs, and battery (0.1-4.5V).

IR RC Detector / Decoder and Transmitter

Supported protocols

Kaseikyo, JVC, NEC extended, Motorola, Samsung, SIRC_12, SIRC_15, SIRC_20, RC5, RC6, NEC standard, Thomson, Sharp, Proton.

Operating Instructions

The multifunction key has Three actions:

Short press: Press the key and not less than 10ms, release key within 500ms.
Long press: Press the key more than 500ms.
Double-Press: Press the test key twice quickly.

Power on & Measurement Interface

In the power off state, short press the multifunction key; the tester is turned on and automatically measured.

Example Display: "浩祺® LCR-T7H V1.1E", "No, unknown, or damaged part", "?" followed by pin indicators "1 2 3 1 2 3 2", "KAA 1233".

Detect Transistor

In the power off state or after the test is completed, put the test element into the transistor test area of the test seat, and press the locking handle. Short press the multifunction key; the tester automatically measures and graphically displays the measurement results.

⚠️ Warning: Always be sure to DISCHARGE capacitors before connecting them to the tester! The tester may be damaged before you have switched it on!

⚠️ Warning: We do not recommend using the tester to measure the battery! The battery voltage must be less than 4.5V, otherwise the tester may be damaged!

Component Placement

The test seat is divided into transistors and zener diode test areas.

Example Display: "浩祺® LCR-T7H V1.1E", "No, unknown, or damaged part", "?" followed by pin indicators "1 2 3 1 2 3 2", "KAA 1233".

Component Measurement Examples

Resistor

Example 1: "浩祺® LCR-T7H V1.1E", "Resistor", "150kΩ", pins "1", "2", "3".
Example 2: "浩祺® LCR-T7H V1.1E", "Resistor", "100.4kΩ", pins "1", "2", "3".
Example 3: "浩祺® LCR-T7H V1.1E", "Resistor", "688Ω", pins "1", "2", "3".
Example 4: "浩祺® LCR-T7H V1.1E", "Resistor", "58.6Ω", "50.4Ω", pins "1", "2", "3".

Diode

Example 1: "浩祺® LCR-T7H V1.1E", "Diode", "C=35pF", "Uf=27732mV", "I_R=15.7uA", pins "1", "2", "3".
Example 2 (2 Diodes): "浩祺® LCR-T7H V1.1E", "2 Diode", "Uf=1857mV", "Uf=1858mV", pins "1", "2", "3".
Example 3 (2 Diodes): "浩祺® LCR-T7H V1.1E", "2 Diode", "Uf=18110mV", "Uf=1862mV", "C=OpF", pins "1", "2", "3".
Example 4 (2 Diodes): "浩祺® LCR-T7H V1.1E", "2 Diode", "Uf=1859mV", "C=OpF", pins "1", "2", "3".
Example 5 (2 Diodes): "浩祺® LCR-T7H V1.1E", "2 Diode", "Uf=1889mV", "Uf=1858mV", pins "1", "2", "3".

Capacitor

Example 1: "浩祺® LCR-T7H V1.1E", "Capacitor", "1108pF", pins "1", "2", "3".
Example 2: "浩祺® LCR-T7H V1.1E", "Capacitor", "2168uF", "ESR=12.50Ω", "I_I=28.18uA", pins "1", "2", "3".
Example 3: "浩祺® LCR-T7H V1.1E", "Capacitor", "1045uF", "I_I=15.448uA", pins "1", "2", "3".
Example 4: "浩祺® LCR-T7H V1.1E", "Capacitor", "1045uF", "ESR=31.50Ω", pins "1", "2", "3".

Inductor

Example 1: "浩祺® LCR-T7H V1.1E", "Inductor", "49.5uH", "0.16Ω", pins "1", "2", "3".
Example 2: "浩祺® LCR-T7H V1.1E", "Inductor", "51.35uH", "20.4Ω", pins "1", "2", "3".
Example 3: "浩祺® LCR-T7H V1.1E", "Inductor", "47.2uH", "0.14Ω", pins "1", "2", "3".

TRICA / SCR

Example 1 (Trica): "浩祺® LCR-T7H V1.1E", "Trica", "V_GT=825mV", pins "3", "G", "A", "1", "2".
Example 2 (SCR): "浩祺® LCR-T7H V1.1E", "SCR", "V_GT=699mV", pins "A", "G", "C", "2", "3", "1".

Battery

Example 1: "浩祺® LCR-T7H V1.1E", "Battery?", "3960mV", pins "1", "2", "3".
Example 2: "浩祺® LCR-T7H V1.1E", "Battery?", "3512mV", pins "1", "2", "3".
Example 3: "浩祺® LCR-T7H V1.1E", "Battery?", "3868mV", pins "1", "2", "3".

Transistor Type Detection

BJT

BJT-NPN: "浩祺® LCR-T7H V1.1E", Pinout C, B, E. Parameters: hFE=189, Vbe=719mV, Iceo=5.46uA.
BJT-PNP: "浩祺® LCR-T7H V1.1E", Pinout C, B, E. Parameters: hFE=169, Vbe=719mV, Iceo=5.46uA.
BJT-NPN: "浩祺® LCR-T7H V1.1E", Pinout C, B, E. Parameters: hFE=120, Vbe=719mV, Iceo=8.46uA.
BJT-PNP: "浩祺® LCR-T7H V1.1E", Pinout C, B, E. Parameters: hFE=120, Vbe=919mV, Iceo=8.46uA, Ices=8.0nA.

MOSFET / IGBT

P-IGBT: "浩祺® LCR-T7H V1.1E", Pinout C, G, E. Parameters: Id=5.60uA, Vg=3.56V.
N-IGBT: "浩祺® LCR-T7H V1.1E", Pinout C, G, E. Parameters: Id=5.63uA, Vg=3.78V.
P-MOS: "浩祺® LCR-T7H V1.1E", Pinout D, G, S. Parameters: Cp=12pF, Id=5.65uA, Vg=3.55V.
N-MOS: "浩祺® LCR-T7H V1.1E", Pinout D, G, S. Parameters: Cp=12pF, Id=5.65uA, Vg=3.55V.
P-JFET: "浩祺® LCR-T7H V1.1E", Pinout D, G, S. Parameters: Id=5.63uA, Vg=3.65V.
N-JFET: "浩祺® LCR-T7H V1.1E", Pinout D, G, S. Parameters: Id=5.63uA, Vg=3.65V.
P-E-MOSFET: "浩祺® LCR-T7H V1.1E", Pinout D, G, S. Parameters: Vth=1468mV, Cgs=842pF, Rds=0.08Ω.
N-E-MOSFET: "浩祺® LCR-T7H V1.1E", Pinout D, G, S. Parameters: Vth=960mV, Cgs=4127pF, Rds=0.23Ω.

Thyristor / Triac

Thyristor/Triac: "浩祺® LCR-T7H V1.1E", Parameters: Igt (Gate trigger current)<6mA.

Detect Zener Diode

In the power off state or when detection is completed, put the Zener diode into the Zener diode test area of the test seat, and press the locking handle. Short press the multifunction key; the tester automatically measures and graphically displays the measurement results.

Example Display: "浩祺® LCR-T7H V1.1E", "Zener", "Vf=5.00V", pins "K", "A".

⚠️ Warning: Otherwise it is impossible to test zener diode!

IR RC Detector

After component detection is completed, double click the test button to enter the IR RC Detector. Press the remote control key at the tester's "IR" test hole; the tester will display the user code & data code.

Example Display: "浩祺® LCR-T7H V1.1E", "IR detector", "Protocol: NEC", "Pulses: 75", "FirstPulse: 7 ms", "FirstPause: 9 ms".

Switch on / off Interface

After the component detection is completed, double click the test button to enter the IR RC Detector. Short press the key twice to exit the transistor test interface and shutdown interface.

Example Display: "浩祺® LCR-T7H V1.1E", "Probing...", "[Vbat = 4.21V]", "1 2 3 1 2 3 2", "KAA 1233".

Example Display: "浩祺® LCR-T7H V1.1E", "Power off, bye."

Automatic Shutdown

When the component detection is completed and after reaching the automatically shutdown time, the tester automatically shuts down. Automatic shutdown time can be set by hardware jumpers: timeout support for 10s, 20s, 30s, and 50s. Factory set to 20s.

Charging the Battery

Built-in Li-ion Battery voltage measurement. The built-in Li-ion Battery voltage is measured before detection. When the battery voltage is less than 3.0V, it will force shutdown, then please charging.

The tester has a standard Micro USB interface; please use an external 5V power supply or USB power charging.

Example Display: "浩祺® LCR-T7H V1.1E", "Charge the battery!", "[Vbat = 3.08V]", "Power off, bye."

Forced Shutdown

When the tester crashes, push the switch at the lower left corner of the tester with a needle to force a shutdown!

Visual Description: A small switch labeled "OFF" is visible on the tester's side.

FAQ

Question	Cause	Solution
Cannot power on	Built-in Li-ion Battery is dead	Charging the Li-ion Battery, charging methods is dead

Note: Not all components can be tested, especially power components.

Performance Parameters

The Multifunction Tester can automatically identify elements and automatic detection of pin layout, and automatic switching range.

Component	Range	Parameter Description
BJT	-	hFE (DC Current Gain), Ube (Base-Emitter Voltage), Ic (Collector Current), Iceo (Collector Cut-off Current (IB=0)), Ices (Collector short Current), Uf (Forward Voltage of protecting diode) ?
Diode	Forward Voltage <4.50V	Forward Voltage, Diode Capacitance, In (Reverse Current) ?
Double Diodes	-	Forward Voltage ?
Zener Diode	0.01-4.50V (Transistor test area) / 0.01-20V (Zener Diode test area)	Forward Voltage, Reverse Voltage ?
JFET	-	Cg (Gate Capacitance), Id (Drain Current) at Vgs (Gate to Source Threshold Voltage), Uf (Forward Voltage of protecting diode) ?
MOSFET	-	Id (Drain Current) at Vgs (Gate to Source Threshold Voltage), Uf (Forward Voltage of protecting diode) ?
IGBT	-	Vt (Gate to Source Threshold Voltage), Cg (Gate Capacitance), Rds (Drain to Source On Resistance), Uf (Forward Voltage of protecting diode) ?
Thyristor / Triac	Igt (Gate trigger current)<6mA	Gate trigger voltage ?
Capacitor	25pF-100mF	Capacitance, ESR (Equivalent Series Resistance), Vloss ?
Resistor	0.01-50MΩ	Resistance, Inductance, DC Resistance ?
Inductor	0.01mH-20H	Inductance, DC Resistance, Voltage, Battery Polarity ?
Battery	0.1-4.5V	Voltage, Battery Polarity ?

Notes:

① Iceo, Ices, Uf displayed only when effective.
② Diode Capacitance, Ir (Reverse Current) displayed only when effective.
③ Displayed only when has protecting diode.
④ ESR, Vloss displayed only when effective.
⑤ Measurement of inductors with resistance below 2100Ω.

Other Features

Measurement results using TFT graphic display (160x128).
One key operation.
Auto Power Off (Timeout Settable).
Built-in high capacity rechargeable Li-ion Battery.
Li-ion Battery voltage detection.

Warning

Built-in Li-ion Battery: it is strictly prohibited the tester immersed in water, or near a heat source! For your personal safety, please strictly comply with the use of Li-ion Battery specifications and precautions!

⚡ Please do ESD protection!

Authenticity & Contact

Please recognize the 浩祺® trademark, buy authentic products, refuse fakes and enjoy better quality!

Supports consumers to take LCR-T7H photos (exterior and interior) and send to this e-mail for authenticity verification. If the products are counterfeit, we suggest you appeal to the platform where the seller is located to safeguard your rights and interests!

E-mail: haoqidianzi@163.com

If you have any suggestions, please contact us. Thank you!

Packing List

Tester x1
Debug accessories x1
Micro USB charging line x1