Preliminary Technical Data
UG-1828
Rev. PrC | Page 303 of 338
Carriers
The
Carriers
tab (see Figure 284) provides access to the settings that determine device LO configuration. This page allows the user to:
1.
RX1 Port Switching
allows the user to set up port switching depending on the Rx LO frequency. In this section the user can set the
max and min values to set up the switching for both the Rx channels. Note that this prevents the use of ORx channels
2.
Define Carrier Frequencies
(default selection in the Carrier Configuration Mode drop down)
•
Configure the LO
•
Set
PLL Retuning
to allow or disallow PLL retuning when switching between Tx and Rx
•
When Tx and Rx are using the same LO, but different frequency in the case of Low IF mode for example, when switching
between Tx and Rx, PLL must be retuned to lock. If Tx and Rx are using different LOs, there is no need to do PLL retuning.
•
In some configuration modes, such as TDD LTE, an Antenna Diversity checkbox appears here. This checkbox can be used
to change the routing of the LOs from Rx1/Tx1 and Rx/Tx2 to all on the same LO.
•
Set carrier frequency
•
Intermediate frequency is supported for RX. Enabled by ticking the NCO box. Recommended range from 490kHz to 20MHz.
•
Set Rx1/Rx2/Tx1/Tx2 carrier source (internal or external, options vary depending of selected setup).
•
If external LO is used then
•
Set the divisor value
•
TES informs the user about the external LO frequency that must be provided to the ADRV9001 transceiver at the External
LO input.
•
If Internal LO is used, user has the option to select
Best Phase Noise
and
Best Power Saving
for their application. Note only
Sub-1 GHz Tx frequencies are supported for
Best Phase Noise
option. This option changes some of the analog DC biases to
reduce the VCO voltage swing and as a result the power consumption. The PLL calibration can be set to normal or fast mode
and the PLL bandwidth can also be set from 50kHz to 1200kHz.
Figure 284. Carriers Configuration Tab
