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5. In the EVM GUI, enable High Resolution Burst Mode of the channels under evaluation. Set the desired
high- and low-resolution samples. The example shown in
samples set to maximum. This ensures that the entire FFT is analyzed with 14-bit capture for accurate
SNR and SFDR calculations.
6. ADS58H40 Trigger Options
•
If the ADS58H40 has auto-trigger enabled, set the J12 jumper to the 2-3 position. Start the auto-
trigger process by pressing the SW2 pushbutton.
•
TSW1400 Trigger Generation (External Trigger)
– On the EVM, remove the jumper at J12, ensuring the ADS58H40 TRIG_EN (pin G3) is floating.
– Using an SMA to grabber cable, connect SYNC1 SMA connector at J14 of the TSW1400 to
jumper J2, pin 2 header of the EVM.
– Using an SMA to SMA cable, connect SYNC3 SMA connector at J16 to EXT_TRIG_INPUT
SMA connector at J11 of the TSW1400.
7. Press the Capture button on the High Speed Data Converter Pro GUI.
8. Observe an FFT result similar to that of
SLAU455 – August 2012
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Figure 13. TSW1400 Trigger Option
Figure
14.
Copyright © 2012, Texas Instruments Incorporated
Figure 14
has both high samples and low
Basic Test Procedure
15
ADS58H40 EVM
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