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JL (Jieli) Bluetooth Test Box Comprehensive Guide: Key Steps & Practical Operation

As a leader in Bluetooth audio solutions, Zhuhai Jieli Technology's BluetoothTest Box is an essential tool for development and production. This guide provides complete operational instructions to streamline your Bluetooth chip testing.

Core Features Overview

The JL (Jieli) Bluetooth Test Box offers:

• Dual-device parallel testing capability
• A2DP audio playback testing
• HFP call function testing
• Frequency offset testing with auto-calibration
• Wireless firmware upgrade
• Rapid test mode

Step-by-Step Operation Guide

1. Power Connection & Initial Setup

• Use included 9V power adapter
• Verify "Searching" status on both channels upon startup
• Confirm correct Bluetooth name display for DUT (Device Under Test)

2. Critical DIP Switch Settings

(Requires reboot after adjustment)

Switch	Function	Recommended	Notes
1	Call test	As needed	Enable call testing
2	Mic loopback test	Critical	ON: Sound from DUT speaker
3	Quick test	Optional	Requires SDK2011+ support
4	Freq. offset test	Critical	Enable measurement
5	Auto-calibration	Recommended ON	Slower but more accurate

3. Button Functions

1. Reset: Typically unused
2. Device B Next: Cycles through music→call→disconnect
3. Device A Next: Same for second device
4. Disconnect: Hold while connecting PC cable for config mode

4. Frequency Offset Standards

• Real-time offset value displayed
• Pass Criteria: Must maintain ±20KHz range
• Auto-calibration (Switch 5) optimizes automatically

5. Configuration Tool Workflow

1. Enter config mode (Hold Button4 + PC cable)
2. Access CD drive in "My Computer"
3. Launch bt_test_box.exe
4. Key parameters:
   • Minimum detectable signal (adjust range)
   • Target device name (accelerates pairing)
   • Max TX power (connection stability)

6. Wireless Upgrade Methods

Method 1: SD Card

1. Pre-configure target device name
2. Insert SD card with .bfu file
3. Auto-upgrades upon connection

Method 2: PC Bluetooth

1. Navigate to "Device Upgrade" in config mode
2. Select device or specify Bluetooth name
3. Load .bfu file to initiate

Troubleshooting Guide

1. Upgrade Failures:

   • Resume interrupted upgrades (rename device to BT_UPDATA)
   • Host failures require Method 1 recovery

2. Display Issues:

   • "Initializing": Slave module error
   • No display: Host module error

3. Audio File Update:

   • Replace media1.sbc/media2.sbc
   • Reflash slave firmware

Pro Tips

1. Enable both Switch 4 & 5 for precision frequency tests
2. Maintain 4+ standby devices for batch testing efficiency
3. Quick test mode requires AC690x_SDK2011+ firmware

For complete technical documentation including:

• Detailed user manuals
• Schematics & reference designs
• Debugging guides
• FAQs

Visit our AliExpress store [BLE Voice Store] or contact our engineering team:

📧 [e-mail]
📱 [phone] (WhatsApp/WeChat)

BluetoothTechnology #AudioEngineering #HardwareTesting #JieliTech #EngineeringSolutions