Texas Instruments ADS127L11EVM, User Manual, Page: 15 / 35

6 EVM Operation
6.1 Connecting the Hardware
After installing the software, connect the EVM as shown in Figure 6-1 :
1. Physically connect P2 of the PHI to J1 of the ADS127L11EVM. Install the screws to assure a robust
connection.
2. Connect USB on PHI to the computer first.
a. LED D5 on the PHI lights up, indicating that the PHI is powered up.
b. LEDs D1 and D2 on the PHI start blinking to indicate that the PHI is booted up and communicating with
the PC; Figure 6-1 shows the resulting LED indicators.
3. Start the software GUI as shown in Figure 6-2 . You will notice that the LEDs blink slowly as the FPGA
firmware is loaded on the PHI. This loading takes a few seconds then the AVDD and DVDD power supplies
will turn on.
4. Connect the signal generator. The input range is 0 V to 5 V. A common input signal applied is a 4.9-V
PP
signal with a 2.5-V offset. This signal is adjusted just below the full-scale range to avoid clipping.
5. Connect input
4. Connect op onal
signals as needed.
ADS127L11EVM
PHI
Controler
2. Connect USB power before
applying signal source.
3. Start so
ware GUI.
1. Connect PHI to
ADS127L11EVM and
install screws.
4. Connect op onal
signals as needed.
Figure 6-1. Connecting the Hardware to the ADS127L11
Select EVM GUI from
start menu, or
associated shortcut.
Figure 6-2. Launch the EVM GUI Software
www.ti.com EVM Operation
SBAU351 – APRIL 2021
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ADS127L11EVM-PDK Evaluation Module 15
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