AD9959/PCB
Rev. 0 | Page 20 of 28
The
Chip Level Control
window (Figure 41) from this particular setup shows that a 500 MHz
System Clock
is running, and that a 16-
level modulation-no RU/RD is being performed. Notice the
Level
box located in the
Modulation Configuration
section. The PPC Bit
pattern in the
Profile Pin Config
subsection of the
Modulation Configuration
is <010>. Referring to the table in the
16-Level
Modulation-No RU/R
D section of the AD9959 data sheet, we see that this bit pattern sets up 16-level modulation on Channel 2.
05698-041
Figure 41.
In the
Channel Control
window (Figure 42), Channel 2 has
Frequency
selected as its modulation output as shown in the
Modulation
Output Type
box. As discussed in the Channel Constraint Guidelines
section of the AD9959 data sheet, when performing 16-level
modulation on a selected channel, all other channels are available only for the single tone mode of operation.
05698-042
Figure 42.
