FNRSI DPOS350P 4-in-1 Portable Lab Analyzer User Manual

1. Product Overview

The FNRSI DPOS350P is a versatile 4-in-1 portable lab analyzer designed for various electronic testing and measurement applications. It integrates a digital phosphor oscilloscope, a signal generator, a spectrum analyzer, and a frequency response analyzer into a single compact device.

This device features a 350MHz bandwidth, 1GSa/s real-time sampling rate, and a 7-inch IPS touchscreen for intuitive operation. It is suitable for laboratory, production, and field diagnostic environments.

Figure 1.1: FNRSI DPOS350P device with probes, USB cable, and power adapter.

Figure 1.2: The DPOS350P functions as a 350MHz Oscilloscope, 50MHz Signal Generator, 200K-350MHz Spectrum Analyzer, and 100K-50MHz Frequency Response Analyzer.

2. Package Contents

Before using the device, please verify that all items listed below are present in the package:

• DPOS350P Host Unit (x1)
• 350MHz Probe (x2)
• USB Data Cable (x1)
• Alligator Clip (x1)
• QC18W Fast Charger (x1)
• User Manual (x1)

Figure 2.1: Visual representation of the DPOS350P packing list.

3. Setup and Initial Use

3.1 Charging the Device

The DPOS350P features an integrated 3.7V/8000mAh lithium battery with QC 2.0 technology for fast charging. Use the provided QC18W fast charger and USB data cable to charge the device. A full charge typically takes approximately 3 hours.

Figure 3.1: Dual channel input and fast charging capability.

3.2 Connecting Probes

Connect the 350MHz probes to the CH1 and CH2 input channels on the device. Ensure a secure connection for accurate measurements. The device supports dual 1MΩ (18pF) input channels for simultaneous signal measurement.

3.3 Powering On and Initial Configuration

Press and hold the power button to turn on the device. The 7-inch IPS touchscreen will display the main interface. The device supports multiple languages and offers 5 preset power-on items. It features a capacitive touch screen for interaction.

4. Operating Instructions

4.1 Digital Phosphor Oscilloscope (DPO)

The DPOS350P functions as a 350MHz digital phosphor oscilloscope with 1GSa/s real-time sampling and a 50,000 wfm/s refresh rate. It captures elusive signal anomalies with a 1ns rise time.

• High-Resolution Mode: Supports 8-bit to 16-bit high-resolution mode for improved signal detection and display.
• Display Features: Utilizes digital fluorescent grayscale and color temperature display for superior signal clarity.
• Overvoltage Protection: Features 400V overvoltage protection.
• Modes: Includes XY, Zoom, and Roll modes for precise debugging.

Figure 4.1: Digital Fluorescent Grayscale & Color Temperature Display.

Figure 4.2: Next-Level 8~16-bit Technology for improved signal analysis.

Figure 4.3: Zoom Time Base Expansion and Hardware Bandwidth Limiter.

Figure 4.4: Ultra-Sensitive 2mV/Div and Adaptive High-Frequency Suppression.

Figure 4.5: Long Time Base Flow Mode and Digital Fluorescence X-Y Mode.

Figure 4.6: Comprehensive Trigger Functions and One-Key Auto Adjustment.

Figure 4.7: Manual Cursor Measurement and FFT Spectrum Analysis.

4.2 Signal Generator

The built-in 50MHz signal generator can output 14 standard waveforms and custom signals (up to 500 storage slots). It supports sine waves up to 50MHz and square waves up to 10MHz.

• Amplitude: Adjustable from 0-5Vpp.
• Offset: Adjustable from ±2.5V.
• Duty Cycle: Adjustable from 0.1%-99.9%.
• Resolution: 1mV/1Hz resolution for versatile stimulus generation.

4.3 Spectrum Analyzer

The 350MHz spectrum analyzer performs 200kHz-350MHz FFT analysis with 32K points. It is ideal for EMI/RF troubleshooting.

• Display: Features a 3D waterfall display.
• Dynamic Range: -60dBmV to +260dBmV.
• Features: Includes max harmonic marker and auto-calibration.

Figure 4.8: Advanced Spectrum Analyzer with 3D waterfall display.

4.4 Frequency Response Analyzer (FRA)

The 50MHz frequency response analyzer allows for sweep tests from 100Hz-50MHz with 20-500 excitation points. It is used to measure gain/phase response for filters, amplifiers, or system validation.

• Analysis: Performs Bode Plot Analysis.
• Adjustments: Adjustable frequency, excitation amplitude, and offset.
• Measurement: Supports cursor tracking for measurements.

Figure 4.9: Built-in 50M Frequency Response Analyzer.

4.5 Data Storage and Export

The device is equipped with 1GB storage, capable of saving up to 90 images (screenshots) and 500 waveforms for secondary analysis. You can connect the device to a PC via USB to view or copy screenshots.

Figure 4.10: Efficient Data Storage & Viewing interface.

Figure 4.11: USB Data Export and High Voltage Protection.

5. Maintenance

5.1 General Care

Keep the device clean and free from dust. Use a soft, dry cloth for cleaning the exterior and the touchscreen. Avoid using abrasive cleaners or solvents.

5.2 Firmware Updates

The device supports firmware upgrades via .iso image files. Connect the device to a PC and follow the instructions provided on the manufacturer's website for the update process.

5.3 Battery Care

To prolong battery life, avoid fully discharging the device frequently. Store the device in a cool, dry place when not in use for extended periods.

6. Troubleshooting

This section provides solutions to common issues you might encounter with the DPOS350P.

7. Specifications

7.1 Basic Parameters

7.2 Oscilloscope Parameters

7.3 Signal Generator Parameters

7.4 Frequency Response Analyzer Parameters

7.5 Spectrum Analyzer Parameters

8. Support Information

For further assistance, technical support, or warranty inquiries, please refer to the official WESTOBiG brand store or contact their customer service. The manufacturer is FNIRSI.

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