Analog Devices ADRV9005 Reference Manual page 131

Reference Manual ADRV9001
FREQUENCY HOPPING
changed by 10 dB. This FH table was used to easily see the transition between two Tx frames. An ADRV9001 evaluation board and a Tektronix
RSA306B spectrum analyzer was used in this measurement. The transition time was measured to be 103.93 µs. From this, the t was
pllRetune
calculated to be 83.93 µs (103.93 µs – 20 µs) which closely matches the results given in Table 54 (83.5 µs).
Figure 122. PLL Retune Time—Time Overview
The time overview mode shows the end of frame N, the transition time, and start of frame N+1. Frame N power level is higher than frame N+1
as the Tx attenuation was defined as higher in the FH table.
Note: the markers don't accurately measure the transition time. These are only helpful to see the relationship between the two views.
Figure 123. PLL Retune Time—Frequency Settling
In the frequency settling view, the same frames can be seen. In this view, the time taken to for the frequency to settle can be measured. The
blue horizontal lines indicate the +/− 500Hz frequency limits. The settling time can be read directly as 103.93 µs.
analog.com Rev. A | 131 of 377