Texas Instruments ADC16DX370EVM, Руководство пользователя

Страница: 16 / 25

Evaluation Troubleshooting
www.ti.com
5 Evaluation Troubleshooting
Table 5. Troubleshooting
Issue Troubleshoot
• Verify the test setup shown in Figure 2 , and repeat the setup procedure as described in this
document.
• Check power supply to EVM and TSW14J56EVM. Verify that the power switches are in the on
position.
• Check signal and clock connections to EVM.
General problems
• Visually check the top and bottom layers of the board to verify that nothing looks discolored or
damaged.
• Check the connection of all boards together.
• Try pressing the CPU_RESET button on the TSW14J56EVM.
• Try power-cycling the external power supply to the EVM, and reprogram the LMK and ADC
devices.
• Verify the settings of the configuration switches on the TSW14J56EVM.
• Verify that the clock going to the CLK input is connected and the appropriate LEDs are blinking.
TSW14J56 LEDs are not • Verify that the ADC device internal registers are configured properly.
correct
• If LEDs are not blinking, reprogram the LMK device.
• Try pressing the CPU_RESET button on the TSW14J56EVM.
• Try capturing data in HSDC Pro to force an LED status update
• Verify that the USB cable is plugged into the EVM and the PC.
• Check the computer device manager and verify that a ‘USB serial device’ is recognized when
Configuration GUI is not the EVM is connected to the PC.
working properly
• Verify that the green ‘USB Status’ LED light in the top right corner of the GUI is lit. If it is not lit,
press ‘Reconnect FTDI’ button.
• Try restarting the configuration GUI.
Configuration GUI is not
• Use the free FT_PROG software from FTDI chip and verify that the on-board FTDI chip is
able to connect to the EVM
programmed with the product description ‘ADC16DX370EVM’.
• Verify that the TSW14J56EVM is properly connected to the PC with a mini-USB cable and that
HSDP software is not
the board serial number is properly identified by the HSDP software.
capturing good data or
• Check that the proper ADC device is selected. In default conditions, ‘ADC16DX370_LMF_222’
analysis results are
should be selected.
incorrect.
• Check that the analysis parameters are properly configured.
HSDP software gives a time-
• Try to reprogram the LMK device and reset the JESD204 link.
out error when capturing
• Verify that the ADC sampling rate is correctly set in the HSDP software.
data
• Try pressing the ‘Calibrate ADC’ button on the Intro tab of the configuration GUI to recalibrate
the ADC.
Sub-optimal measured
• Check that the spectral analysis parameters are properly configured.
performance
• Verify that bandpass filters are used in the clock and input signal paths and that low-noise
signal sources are used.
6 References
• ADC16DX370 data sheet , TI literature number SNVS990
• TSW14J56EVM User’s Guide , TI literature number SLWU086
• High Speed Data Converter Pro Software User’s Guide , also available in the help menu of the software
• LMK04828 data sheet
• FTD245 Driver Installation Manual
16 ADC16DX370EVM User's Guide SLAU529A – February 2014 – Revised December 2014
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated