Datasheet
www.ti.com
Basic Test Procedure
Figure 13. TSW1400 Trigger Option
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 Figure 14 has both high samples and low
samples set to maximum. This ensures that the entire FFT is analyzed with 14-bit capture for accurate
SNR and SFDR calculations.
6. ADS58H4x Trigger Options
• If the ADS58H4x 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 ADS58H4x 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 Figure 14.
15
SLAU455A–August 2012–Revised October 2012 ADS58H4x (ADS58H40/ADS58H43) EVM
Submit Documentation Feedback
Copyright © 2012, Texas Instruments Incorporated