Tx Control Tab; Tx Registers Tab - Analog Devices ADAR1000-EVALZ User Manual

UG-1283

Tx CONTROL TAB

The Tx Control tab (see Figure 9) allows the user to set the gain
and phase of each of the four transmit channels.
To use the Tx Control tab, take the following steps:
1. Click Tx Initalise.
2. Select the Attenuation check box for each channel to add
in or remove the 15 dB step attenuation.
3. Adjust the Gain Index and Phase Angle settings of each
channel using the corresponding dropdown menus.
4. After adjustments, click Load All to write the settings to
the device registers.

TX REGISTERS TAB

The TX Registers tab provides control for all the transmit
function registers in the device (see Figure 10).
In the Tx Gain Control section, the user sets the gain register
for each transmit channel.
In the Tx Phase Control section, the user sets the in-phase (I)
and quadrature phase (Q) gain registers, as well as polarity bits
for each channel in the corresponding vector modulator (VM).
In the Memory Index section, if the SPI Ctrl check box is
selected, the beam position settings for the corresponding
channel are recalled from memory into the channel work
registers, according to the value (the memory address) in the
RAM INDEX field for each channel. If the SPI Ctrl check box
under TX CHX RAM INDEX is checked, data for all four
channels are pulled according to the value in the TX CHX
RAM INDEX window.
In the Bias Current section, the user selects a bias setting for
each of the three transmit stages (the settings are common to all
four transmit channels).
Click Write Gain Values, Write Phase Values, and Write
Memory Values to send the corresponding bias register setting
to the ADAR1000-EVALZ evaluation board.
Figure 9. Tx Control Tab
Figure 10. TX Registers Tab
Rev. 0 | Page 10 of 18
ADAR1000-EVALZ User Guide