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3.4
Connect the Power Supplies to the Boards (Power Off)
1. Confirm that the power switch on the TSW14J56EVM is in the off position. Connect the +5-V power
supply adapter to the TSW14J56EVM.
2. Confirm that the +4-V power supply for the EVM is turned off. Connect the +4-V power supply to the
green power connector (closest to the USB connector).
Do not turn on the power to any board. Powering up the boards in the incorrect
order could potentially cause damage to one of the boards.
3.5
Connect the Signal Generators to the EVM (RF Signal Off)
1. Connect a signal generator to the CLK input of the EVM through a bandpass filter. This must be a low-
noise signal generator. TI recommends a Trilithic™ tunable bandpass filter to filter the signal coming
from the generator. Configure the signal generator for 370 MHz. When using an RF signal generator,
the power input to the CLK SMA connector should be +11 dBm (2.2 Vpp into 50 Ω) for best
performance and must be at least +4 dBm to function. Therefore, the signal generator should be
increased above +11 dB by an amount equal to any additional attenuation in the clock signal path,
such as the insertion loss of the bandpass filter. For example, if the filter insertion loss is 2 dB, the
signal generator should be set to +11 dBm + 2 dB = +13 dBm.
2. Connect a signal generator to the VINA+ input of the EVM through a bandpass filter and attenuator at
the SMA connector. This must be a low-noise signal generator. TI recommends a Trilithic™ tunable
bandpass filter to filter the signal from the generator. Configure the signal generator for 70 MHz, +0
dBm.
3. It is important to frequency lock the input signal generator to the clock signal generator using the 10-
MHz reference. This is required to achieve coherent sampling of the input signal and is recommended,
if possible. Frequency locking this signal generator is not required for non-coherent sampling.
NOTE:
Do not turn on the RF output of any signal generator.
3.6
Turn the TSW14J56EVM Power on and Connect to the PC
1. Turn the power switch of the TSW14J56EVM on.
2. Connect a mini-USB cable from the PC to the TSW14J56EVM.
3. If this is the first time connecting the TSW14J56EVM to the PC, then follow the on-screen instructions
to automatically install the device drivers. See the TSW14J56EVM
instructions.
3.7
Turn the EVM Power Supplies on and Connect to the PC
1. Turn the +4-V power supply on to power up the EVM.
2. Connect the EVM to the PC with the mini-USB cable.
3.8
Turn the Signal Generator RF Outputs on
Turn on the RF signal outputs of the signal generators connector to CLK and VINA+.
3.9
Open the HSDP Software and Load the FPGA Image to the TSW14J56EVM
1. Open the HSDP software.
2. Press OK to confirm the serial number of the TSW14J56EVM device.
3. Select the 'LM97937EVM_222' device from the ADC select drop-down in the top left corner and press
'Yes' to update the firmware.
SLAU542 – December 2013
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CAUTION
Copyright © 2013, Texas Instruments Incorporated
Setup Procedure
User's Guide
for more specific
List of Tables
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