Quick Start Guide
6
SLAU630A – August 2015 – Revised August 2016
Copyright © 2015–2016, Texas Instruments Incorporated
ADC31JB68 Evaluation Module
2.2.2
ADC31JB68EVM Setup
Next, setup the ADC31JB68EVM using the following:
CAUTION
Ensure that the power cable is connected to the bench power supply and
EVM with the correct polarity.
Connecting the cable with an incorrect polarity
may damage the EVM. Testing the voltage at the output of the power cable (at
the barrel connector) is recommended before connecting the power cable to the
EVM.
1. Connect the flying leads of the power cable to the +5V bench power supply
2. Test the voltage at the output of the power cable to verify correct polarity. The center core of the barrel
connector must have +5V relative to the outside ground shield.
3. Connect the included power cable to connector MAIN PWR connector of the EVM
4. Connect the included mini-USB cable to the USB connector
5. Connect the 6-dB, 50-
Ω
attenuator to the VIN– input
6. Set the analog input signal generator for 70 MHz, +10 dBm
7. Connect the Signal generator to the VIN– input. Place the bandpass filter between the analog signal
generator and the attenuator input to remove noise and harmonics from the signal generator.
8. Set the analog input signal generator for 500 MHz, +12 dBm
9. Connect the Signal generator to the CLK input. Place the bandpass filter between the clock signal
generator and the CLK input to remove noise and harmonics from the signal generator.
2.3
Software Setup Procedure
The software can be opened and configured once the hardware is properly setup.
2.3.1
ADC31JB68 GUI Configuration
1. Open the ADC31JB68 GUI by going to
Start Menu
→
All Programs
→
Texas Instruments ADCs
→
ADC31JB68 GUI
2. Verify that the green
USB Status
indicator is lit in the top right corner of the GUI
3. Press the
Program LMK04828
button
4. Press the
Calibrate ADC31JB68
button