Úvod
The Luqeeg Signal Generator is a versatile device designed for generating DC voltage and current outputs, as well as PWM pulse square waves. It also features input measurement capabilities, making it suitable for a wide range of applications including PLC controller testing, LED calibration, and general electronic circuit analysis. This manual provides detailed instructions for the proper setup, operation, and maintenance of your signal generator.
1. Nastavenie a prvé použitie
1.1 Rozbalenie
Carefully remove all components from the packaging. The package should contain:
- 1 x Signal Generator
- 4 x klipy
- 1 x USB kábel
- 1 x Používateľská príručka (tento dokument)

Obrázok 1.1: Included alligator clips for connections.
1.2 Koniec zariadeniaview
Familiarize yourself with the main components of the signal generator:

Obrázok 1.2: Signal Generator Component Diagram.
- Pluggable terminal block (3.81-9P)
- Symbol terminálu
- 2 inch TFT color display screen
- Kláves so šípkou nadol
- Digital encoder adjustment knob (with button, can be pressed)
- Ľavý kláves Shift
- Vypínač napájania
- Kontrolka nabíjania
- USB port
1.3 Možnosti napájania
The signal generator offers flexible power supply methods:
- External 24VDC Terminal: Connect a 24VDC power source to the designated terminals.
- USB Type-C: Use the provided USB Type-C cable to connect to a power adapter or computer.
- Rechargeable Li Battery: The device supports an internal rechargeable lithium battery (not included). When a battery is installed, it can be charged via USB Type-C or external 24VDC while in use.

Obrázok 1.3: Multiple power supply methods for the signal generator.
1.4 Schéma zapojenia
Refer to the following diagram for proper terminal connections. Terminal numbers are read from left to right (1-9).

Obrázok 1.4: Terminal Connection Diagram.
- Uzemnenie (1): Power supply negative (input). This is the same as 9-GND and can be arbitrarily connected.
- 24V (2): Power supply positive (input). External power input to power or charge the meter.
- mA i (3): Current signal input positive.
- Vi (4): Voltage signal input positive.
- LP+ (5): EXT 24V input (passive mode).
- mA o (6): Current signal output positive. The current output is commonly used in active mode. The output of the meter 6-mAo 9-GND corresponds to positive and negative current input of the PLC.
- Vo (7): Voltage signal output positive. The voltage výstup 7-Vo 9-GND corresponds to the positive and negative voltage input of the PLC, or it can be measured directly with a multimeter.
- PWM (8): PWM output positive.
- Uzemnenie (9): Signal common ground (internal connect to ①-GND).
Current Sink Two-Wire Output: Pripojte 24V + k 5-LP+ terminal of the meter head, and output from the 6-mAo terminal to control the current of the external 24V. The meter head is equivalent to a variable resistor, so it is called passive mode. Direct measurement cannot detect the current, and it can be directly replaced with a passive two-wire pressure/temperature sensor, etc.
2. Návod na obsluhu
2.1 Používateľské rozhranie a displej
The device features a 2.0-inch TFT color screen (320x240) that displays all values clearly on one screen. It supports both Chinese and English interface switching. The large digital encoder knob allows for easy and precise adjustments.

Obrázok 2.1: TFT Color Screen Display.

Obrázok 2.2: Digital Encoder Adjustment Knob.
2.2 DC svtage a prúdový výstup
- Voltage DC Analog Output Range: ±12V (with short circuit protection).
- Current DC Analog Output Range: 0-24mA (short circuit protected).
- Nastavenie výstupu: Users can freely set the output range, such as 0-20mA, 4-20mA, 0-10V, 0-5V, etc. The corresponding engineering display values can also be set.
2.3 PWM Pulse Square Wave Output
- Adjustable Frequency: 1-150kHz.
- Adjustable Duty Cycle: 0-100 %.
- Vysoký stupeň: 5 V.
- Aplikácia: PWM pulse output high level is 5V, low level is 0V. It can directly drive buzzers, LEDs, optocouplers, etc., or connect to 12V/24V systems through external level conversion modules.

Obrázok 2.3: Signal generator connected and operating.
2.4 Input Measurement
- Voltage Rozsah merania: ±50V.
- Aktuálny rozsah merania: ±50mA.
3. Údržba
To ensure the longevity and optimal performance of your Luqeeg Signal Generator, follow these maintenance guidelines:
- Čistenie: Use a soft, dry cloth to clean the device. Avoid using abrasive cleaners or solvents, which can damage the casing alebo obrazovka.
- Ukladací priestor: Zariadenie skladujte na chladnom a suchom mieste mimo dosahu priameho slnečného žiarenia, extrémnych teplôt a vysokej vlhkosti.
- Manipulácia: So zariadením manipulujte opatrne, aby ste predišli fyzickému poškodeniu. Nenechajte ho spadnúť ani ho nevystavujte silným nárazom.
- Battery Care (if installed): If using a rechargeable Li battery, ensure it is charged regularly, even if not in frequent use, to maintain battery health. Do not expose the battery to extreme heat or puncture it.
- Ochranná fólia: The surface protective film of the sticker can be peeled off for clearer viewing.
4. Riešenie problémov
This section addresses common issues you might encounter with your signal generator.
- Zariadenie sa nezapína:
- Skontrolujte, či je hlavný vypínač v polohe „ON“.
- Ensure the USB Type-C cable is securely connected and the power source is active.
- If using external 24VDC, verify the power supply is connected correctly to the terminals and is providing the correct voltage.
- If using a rechargeable battery, ensure it is charged.
- Žiadny výstupný signál:
- Verify that the output parameters (voltage, current, PWM frequency, duty cycle) are set correctly on the display.
- Check all connections to the output terminals for proper contact.
- Ensure the device is powered on and functioning.
- Incorrect Output Readings:
- Confirm that the measurement range is appropriate for the signal being measured.
- Check the calibration settings if custom ranges have been configured.
- Uistite sa, že všetky pripojenia sú bezpečné a bez rušenia.
- PWM Output Compatibility:
Poznámka: The PWM output of this device is not suitable for 12V or 2V systems, as 5V is regarded as a low level in these systems. For such applications, an external level conversion module is required.
5. Technické špecifikácie
| Funkcia | Špecifikácia |
|---|---|
| Materiál produktu | ABS |
| Voltage DC Analog Output Range | ±12V (with Short Circuit Protection) |
| Voltage Rozsah merania | ±50V |
| Current DC Analog Output Range | 0-24mA (Short Circuit Protected) |
| Aktuálny rozsah merania | ±50 mA |
| PWM Pulse Square Wave Output Frequency | 1-150kHz (Adjustable) |
| PWM Pulse Square Wave Output Duty Cycle | 0-100% (Adjustable) |
| PWM High Level | 5V |
| Displej | 2.0 inch TFT color screen (320x240), supports Chinese and English |
| kódovač | Digital encoder, large knob adjustment |
| Spôsoby napájania | Terminal external 24VDC / USB Type-C / 1 x Rechargeable Li Battery (not included) |
| Rozmery balenia | 5.91 x 3.54 x 1.97 palca |
| Hmotnosť položky | 7.8 uncí |
| Číslo modelu | Luqeegbnay3rfesc |
| ASIN | B0GDFZ67MF |
6. Informácie o záruke
Luqeeg products are manufactured to high quality standards. This product is covered by a manufacturer's warranty against defects in materials and workmanship. Please refer to the warranty card included with your product or contact Luqeeg customer support for specific warranty terms and conditions. Keep your purchase receipt as proof of purchase for warranty claims.
7. Zákaznícka podpora
For technical assistance, troubleshooting, or any questions regarding your Luqeeg Signal Generator, please visit the official Luqeeg store or contact their customer support. You can find more information and contact details at the Luqeeg Store on Amazon.