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Testing the EVM Data Capture with LVDS Interface
4
Testing the EVM Data Capture with LVDS Interface
This section outlines (1) the external connections required to test the AFE5832 EVM using the LVDS
interface, (2) how to setup the GUIs for testing, and (3) how to capture an analog input signal.
4.1
EVM Hardware Setup
Make the connections shown in
Figure 4. TSW1400EVM and AFE5832 EVM Hardware Setup for LVDS Capture
1. Board Mating: For LVDS data, mate the TSW1400 EVM at connector J3 to the AFE5832 EVM at
connector J48 through the high-speed ADC interface connector.
2. Power Supply: Connect a 5-V (2-A) power supply using the provided power cable to J12 (+5V_IN) of
the TSW1400 EVM or J11 (+5V_IN) of the TSW14J50 EVM . See the TSW manual for more
information, if needed.
Next, connect a 5-V (2-A) power supply using the provided power cable to J61 of the AFE5832 EVM.
Connect the white-striped side of this cable to the positive side of the 5-V power supply.
Optionally, connect a –5-V (1-A) supply at J63 or TP54 if using the CW circuit. No cable is provided for
this.
Turn on the TSW1400 at the SW7 switch.
3. USB: After installing the GUIs as shown in
(USB) located on the top side of the AFE5832 EVM. Connect the USB cable from PC to J5 (USB_IF)
of the TSW1400 EVM.
NOTE: TI recommends that the PC USB port be able to support USB2.0. If unsure, always choose
the USB ports at the back of the PC chassis over ones located on the front or sides.
4. Equipment: Connect a sine wave generator to SMA J1, INP1. Set the frequency to 5 MHz and the
amplitude to –20 dBm. For best performance, a 5-MHz band-pass filter (BPF) is recommended on the
analog input signal to attenuate the harmonics and noise from the signal.
5. CPLD Switches: Ensure that all 4 switches in S5 are in the 'off' position. LEDs D5–D8 should be lit up.
8
AFE5832 32-Channel Analog Front-End Evaluation Module (EVM Rev. A)
Figure 4
for proper hardware setup.
Appendix
A, connect the USB cable from the PC to J65
Copyright © 2017, Texas Instruments Incorporated
www.ti.com
SLOU489 – August 2017
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