UG-1698
Rev. 0 | Page 8 of 23
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
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.
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324
-0
04
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.
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5
Software Window
