Evaluation Board User Guide
UG-002
Rev. 0 | Page 11 of 12
7.
The
Calculator
window, shown in Figure 21, appears.
0812
9-
02
2
Figure 21. Calculator Window
8.
Type 122.88 into the
Ref A Base Frequency:
box and
122.88 into the
Output 1 Base Frequency:
box.
9.
Click
Calculate Settings
, and then click
Apply Settings
.
You should now be able to measure 122.88 MHz at the
OUT1 SMA connector.
ROUTING 26 MHz TO TEST PORT
The following procedure explains how to route the 26 MHz
crystal oscillator to the AD9551 test port. The test port is SMA
J7 and is labeled output PLL locked.
In this example, the input frequency is 122.88 MHz on REF A,
and the output frequency is 122.88 MHz.
1.
Ensure that Jumper JMP3 is positioned for PC control.
2.
Verify that all five jumpers are in place on Connector P2.
3.
Set the positions of the S1, S2, and S3 dip switches to high.
4.
Click
Calculate Device Settings
in the main window of the
evaluation board software.
08
12
9-
0
23
Figure 22. Calculate Device Settings Button (in Main Window)
5.
The
Enable Control?
window, shown in Figure 23,
appears.
08
129-
024
Figure 23. AD9551 Serial Port Programming Warning
6.
Click
Yes
to enable serial port register programming.
7.
The
Calculator
window, shown in Figure 24, appears.
08
12
9-
0
25
Figure 24. Calculator Window
8.
Type 122.88 into the
Ref A Base Frequency:
box and
122.88 into the
Output 1 Base Frequency:
box.
9.
Click
Calculate Settings
, and then click
Apply Settings
.
You should now be able to measure 122.88 MHz at the
OUT1 SMA connector.
10.
From the
View
menu in the main window, select
Register
Debug Window
. The window shown in Figure 25 appears.
