Dc Test/Nco Mode; Configure The Spectrum Analyzer; Configure The Evaluation Board - Analog Devices AD9166-FMC-EBZ User Manual

UG-1698

DC TEST/NCO MODE

CONFIGURE THE SPECTRUM ANALYZER

Configure the spectrum analyzer as follows:

Start frequency = 50 MHz.

Stop frequency = 5 GHz.

Resolution bandwidth = 300 kHz. Use the average rms
detector setting.

Choose an input attenuation of 6 dB. This value can be
adjusted later if there are indications that the analyzer is
causing degradations (warnings on the analyzer itself, or
third-order products appearing on the output spectrum).

CONFIGURE THE EVALUATION BOARD

Complete the following steps to configure the evaluation board
to output a single tone at 1 GHz:
1. Ensure that the AD9166-FMC-EBZ evaluation board is
configured and powered up according to the Hardware
Setup section.
2. Open the ACE software from Start > Programs > Analog
Devices > ACE. A window appears similar to Figure 5.
3. Open the evaluation board view by double clicking the
AD9166-FMC-EBZ evaluation board icon, as shown in
Figure 5.
4. In the AD9166 STARTUP WIZARD, under Board
Clocking Schemes, select All internal clocking from the
Board Clock Scheme dropdown box, as shown in Figure 4.
Figure 4. Select All internal clocking as the Board Clock Scheme
5. Using the AD9166 STARTUP WIZARD on the left side of
the window, replace the default values shown in Figure 6
with the following:
a. For Operation Mode, select DC Test Mode.
b. Set FDAC to 4.9152 GHz.
c. Select the NCO Enable box.
d. Set the Frequency Shift to 1 GHz.
e. Set DC Back-Off(dB) to −0.1 dB.
f. Click the Apply button.
A 1 GHz single tone appears on the spectrum analyzer, as
shown in Figure 8.
After clicking Apply, the Apply button changes to Change. To
change the parameters in Step 5, click the Change button and
enter new values. The Change button reverts to Apply when
new values are entered. Click Apply again after making all
necessary changes.
Figure 5. ACE Software Window
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AD9166-FMC-EBZ User Guide