Basic Test Procedure
3.6
ADC32J/34Jxx and TSW14J56 Setup Guide
Please reference the TSW14J56 User’s Guide for more detailed explanations of the TSW14J56 set-up
and operation. This document assumes the HSDC Pro software and the TSW14J56 hardware are
installed and functioning properly.
The ADC32/34xx EVM requires HSDC Pro software version 2.6 or
higher with TSW14J56 hardware of Rev D (or higher).
Single Tone FFT Test
1. The evaluation of the ADC32J/34Jxx EVM requires programming the LMK04828 clock source with the
correct PLL settings to provide a 160 Msps clock.
•
Connect a USB cable from the ADC32J/34Jxx EVM to the PC
•
Open the ADC3000 GUI, and connect to the ADC32Jxx or ADC34Jxx EVM
•
Go to the
Low Level
tab and click
Load Config
•
Browse and find the
ADC3xJxx_160MSPS_Operation_LMK_Setting.cfg
•
Check that the PLL2 LED D4 is lit – this indicates that the PLL is programmed properly and the
correct clocks are being generated
2. Start the HSDC Pro GUI program. When the program starts, select the
ADC
tab and then select
ADC32Jxx_LMF_222
or
ADC34Jxx_LMF_442
device in the
Select ADC
drop-down menu.
Figure 17. Select ADC32Jxx or 34Jxx in the HSDC Pro GUI Program
3. When prompted by
Load ADC Firmware?
, select YES
4. Select
Single Tone FFT Test
under
Test Selection
5. Select the number of sample points (and resulting number of FFT bins) to be used. The example
shown in
has 65536 samples.
6. Enter the ADC32J/34Jxx sampling rate. The example shown in
has the sample rate set at
160 Msps
7. Enter the input frequency desired. The example shown in
has the filtered input
frequency set at 10 MHz and around 10 dBm – adjust to achieve –1 dBFs on the HSDC Pro FFT plot
8. Select channel 1, 2, 3, 4 depending on the channel to which the signal generator is connected
9. Press the Capture button on the HSDC Pro GUI
10. Observe an FFT result similar to that of
26
ADC3xxx, ADC3xJxx EVM User’s Guide
SLAU579A – June 2014 – Revised September 2014
Copyright © 2014, Texas Instruments Incorporated
