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

ADAR1000-EVALZ

Tx CONTROL TAB

The Tx Control tab (see Figure 28) 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
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. When adjustments are made, click Load All to write the
settings to the device registers.

TX REGISTERS TAB

The TX Registers tab provides control for all transmit function
registers in the device (see Figure 29).
In the Tx Gain Control section, set the gain register for each
transmit channel.
User Guide
In the Tx Phase Control section, set the I and 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
TX CH1 RAM INDEX to TX CH4 RAM INDEX fields for
each channel. If the SPI Ctrl check box under TX CHX RAM
INDEX is selected, data for all four channels are pulled
according to the value in the TX CHX RAM INDEX field.
In the Bias Current section, choose 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.
Figure 28. Tx Control Tab
Figure 29. TX Registers Tab
Rev. A | Page 15 of 24
UG-1283