1. Introduction
The VICTOR 71C is a compact, mini handheld process signal generator designed for a wide range of industrial and laboratory applications. It is capable of generating and measuring various electrical signals, including voltage and current, and features thermocouple simulation and measurement capabilities. Its user-friendly design, high-definition LCD, and robust construction make it an essential tool for debugging and maintenance tasks.
Figure 1: VICTOR 71C Signal Generator Overview
2. Package Contents
Please check the package contents upon receipt to ensure all items are present and undamaged:
- VICTOR 71C Signal Generator (Main Unit)
- Test Leads (Red and Black)
- Carrying Pouch
- User Manual
- Batteries (3x AAA, not included)
Figure 2: Packaging and Accessories
3. Setup
3.1 Battery Installation
- Ensure the device is powered off.
- Locate the battery compartment on the back of the unit.
- Carefully open the battery compartment cover.
- Insert three (3) AAA (LR03) batteries, observing the correct polarity (+/-) as indicated inside the compartment.
- Close the battery compartment cover securely.
WARNING: To avoid electrical shock, remove test leads before opening the case or battery door. Do not operate with the battery door open.
Figure 3: Battery Compartment Location
3.2 Connecting Test Leads
Insert the red test lead into the 'V' or 'mA' input jack and the black test lead into the 'COM' (common) jack, depending on the measurement or output function you intend to use.
4. Operating Instructions
The VICTOR 71C features a high-definition LCD display, intuitive buttons, and a rotary switch for mode selection. It also includes an independent backlight button and a flashlight function for enhanced usability in various environments.
Figure 4: Detailed Product Features
4.1 General Operation
- Power On/Off: Press and hold the power button (usually marked with a circle and a line) to turn the device on or off.
- Backlight/Flashlight: Use the dedicated backlight button (often marked with a sun icon) to activate the display backlight or the integrated flashlight for low-light conditions.
- Mode Selection: Rotate the central knob to select the desired measurement or output function (e.g., mV, V, mA, SOURCE, SIMULATE).
- Function Buttons: The buttons below the display are used for specific functions within each mode, such as adjusting values, starting/stopping output, or selecting units.
4.2 Measurement and Output Functions
The VICTOR 71C supports a variety of measurement and signal generation tasks. Refer to the video demonstration for visual guidance on these operations.
Video 1: VICTOR 71C Signal Generator Demonstration
4.2.1 DC Millivolt Measurement
Set the rotary switch to the 'mV' position. Connect the test leads to the circuit under test. The display will show the measured DC millivoltage. The device can measure up to 110mV DC.
4.2.2 Thermocouple Measurement
Select the 'TC' (Thermocouple) mode. Connect the thermocouple probe to the appropriate input terminals. The device will display the temperature. The video demonstrates K-type thermocouple measurements at 100°C and 500°C.
4.2.3 DC Voltage Measurement
Set the rotary switch to the 'V' position. Connect the test leads to the circuit. The display will show the measured DC voltage. The device can measure up to 10V DC.
4.2.4 DC Current Measurement
Set the rotary switch to the 'mA' position. Connect the device in series with the circuit. The display will show the measured DC current. The device can measure up to 22mA DC.
4.2.5 DC Current Output (Source)
Select the 'SOURCE mA' mode. Use the function buttons to set the desired current output (e.g., 4mA, 20mA). Connect the device to the input of the receiving instrument. The device will output the set current. This function can be used for active current sourcing.
4.2.6 DC Current Output (Simulate)
Select the 'SIMULATE mA' mode. This function is used to simulate a 4-20mA signal for devices that provide loop power. Use the function buttons to set the desired current output (e.g., 4mA, 20mA). Connect the device to the input of the receiving instrument. The device will simulate the set current by drawing power from the loop.
4.2.7 DC Voltage Output
Select the 'SOURCE V' mode. Use the function buttons to set the desired voltage output (e.g., 5V, 10V). Connect the device to the input of the receiving instrument. The device will output the set voltage.
4.2.8 DC Millivolt Output
Select the 'SOURCE mV' mode. Use the function buttons to set the desired millivoltage output (e.g., 40mV). Connect the device to the input of the receiving instrument. The device will output the set millivoltage.
4.2.9 Thermocouple Output (Simulation)
Select the 'SIMULATE TC' mode. Use the function buttons to set the desired temperature for simulation (e.g., K-type 100°C, 500°C). Connect the device to a temperature display or controller to simulate a thermocouple input.
Figure 5: Application Examples
5. Specifications
| Project | Parameter | VICTOR 71C Value |
|---|---|---|
| Output (SOURCE) DC Voltage (DCmV) | Range | 0 ~ 110mV |
| Accuracy | 0.2%+4 | |
| Resolution | 100uV | |
| Output (SOURCE) DC Voltage (DCV) | Range | 0 ~ 10V |
| Accuracy | 0.2%+4 | |
| Resolution | 10mV | |
| Output (SOURCE) DC Current (DCmA) | Range | 0 ~ 22mA |
| Accuracy | 0.2%+4 | |
| Resolution | 0.01mA | |
| Load | 20mA/600Ω | |
| Inhalation Current (SINK) | Range | 0 ~ 22mA |
| Accuracy | 0.2%+4 | |
| Resolution | 0.01mA | |
| External Power Supply | 5 ~ 28V | |
| Other Functions | Manual Ladder Output | Yes |
| Automatic Waveform Output | Yes |
General Specifications:
- Operating Mode: Auto Range
- Operating Temperature: 0 - 50 ℃
- DIY Supplies: Electrical
- Certification: CE
- Origin: Mainland China
- Dimensions: 20.5 x 16 x 6.5 cm (approximate package dimensions)
- Weight: 0.501 kg (approximate package weight)
Figure 6: Device Dimensions
6. Maintenance
Proper maintenance ensures the longevity and accuracy of your VICTOR 71C Signal Generator.
- Cleaning: Use a soft, dry cloth to clean the exterior of the device. Do not use abrasive cleaners or solvents.
- Storage: Store the device in a cool, dry place, away from direct sunlight and extreme temperatures. If storing for extended periods, remove the batteries to prevent leakage.
- Battery Replacement: Replace batteries promptly when the low battery indicator appears on the display. Always use new, high-quality AAA batteries.
- Safety: Always ensure the device is powered off and test leads are disconnected before performing any maintenance or opening the battery compartment.
7. Troubleshooting
If you encounter issues with your VICTOR 71C, try the following basic troubleshooting steps:
- No Power: Check battery installation and ensure batteries are fresh.
- Incorrect Readings: Verify test lead connections, ensure the correct mode is selected, and check for any damage to the test leads or input jacks.
- Output Malfunction: Confirm the correct output mode is selected and the output value is set appropriately. Check connections to the receiving instrument.
- Display Issues: If the display is dim, replace batteries. If segments are missing or the display is erratic, power cycle the device.
For persistent issues, contact customer support or a qualified technician.
8. User Tips
- When performing current measurements, always connect the calibrator in series with the circuit.
- For voltage measurements, connect the calibrator in parallel with the component or circuit.
- Utilize the backlight function in dimly lit environments for better readability.
- Keep the device and accessories clean and free from dust and moisture to ensure optimal performance.
9. Warranty and Support
For detailed warranty information, please refer to the documentation provided by your seller or contact the manufacturer directly. This product typically includes a manufacturer's warranty against defects in materials and workmanship.
For technical support or service inquiries, please contact your point of purchase or the official VICTOR customer service channels.
