Official Manual Jerry Test Box (AC690x_1T2 Test Box Instructions. pdf) FAQ: Q: What are the main functions of this Jerry Test Box? Q: Can the Jerry test box test other brands such as Jianrong and CSR Bluetooth? Q: Do I need to configure the Jerry test box after receiving it? Q: What are the specific standards for frequency offset testing? Q: Why do my batch of board frequency offset tests result in significant differences in values? Q: How many test boxes do you need to buy for PCBA in bulk? Q: After completing PCBA testing, do you still need to retest due to software upgrades required for the project? Q: If using the Jerry Test Box to upgrade the functionality, what else do you need to prepare? If you have any of the above questions, please refer to the article for answers.
A: The main functions are divided into two parts:
1. Bluetooth testing (limited to Jerry's solution only), commonly including testing Bluetooth frequency offset, audio channel, and call channel;
2. Wireless upgrade (after connecting the Bluetooth board to the test box, the program can be directly upgraded, and a TF card needs to be equipped. After transferring the upgrade file to the TF, insert it into the left test TF slot of the test box);
3. Frequency offset correction, correcting PCBA with abnormal frequency offset (calibration data permanently saved and effective);
Q: Can the Jerry test box test other brands such as Jianrong and CSR Bluetooth?
A: This test box can only be used for Jerry's solution, and other brands of Bluetooth will not be able to connect and use it.
Q: Do I need to configure the Jerry test box after receiving it?
A: For regular use, no configuration is required and can be directly powered on for use. If there are special needs, such as connecting the test box only to the specified Bluetooth name, or reducing the wireless coverage range of the test box to avoid mutual interference, etc., you can connect the cable to the computer and configure it. The connecting cable is available in our store;
Q: What are the specific standards for frequency offset testing?
A: Frequency deviation standard: -25~+25Khz, if it exceeds this range, it will be rejected as a defective product, and frequency deviation correction will be carried out uniformly at that time;
Q: Why do my batch of board frequency offset tests result in significant differences in values?
A: This is because the quality of the crystal oscillator used is poor, especially due to the poor consistency of the frequency difference, which can affect the distance and stability of Bluetooth, and even cause issues of disconnection. Although the calibration function of the test box can be partially corrected. However, as a key material, it is recommended to purchase our crystal oscillators. As a first-class solution provider for Jerry, our crystal oscillators have strict quality control and are higher than the general design standards (standard+/-10ppm, our company's+/-7ppm);
Q: How many test boxes do you need to buy for PCBA in bulk?
A: A test box can simultaneously test two PCBAs, with one for every 5000pcs as a reference. Flexible deployment and processing can be carried out based on the number of PCBAs and the testing period;
Q: After completing PCBA testing, do you still need to retest due to software upgrades required for the project?
A: On the one hand, it is necessary to test and verify the upgrade process. On the other hand, if the frequency offset correction function of the test box is used, this correction data will be lost after the software upgrade, and it needs to be corrected again during testing. Therefore, if software upgrades are required, please try to place the software upgrade process before the testing process as much as possible;
Q: If using the Jerry Test Box to upgrade the functionality, what else do you need to prepare?
A: One TF card and one TF card reader are required;
