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SDG7000A User Manual
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9.6.2 I/Q Adjustment
In baseband I/Q mode, the SDG7000A provides the option of I/Q adjustment to suppress the
image caused by the imbalance of I/Q channels to the greatest extent.
Table 9-17 Description of I / Q waveform data source
I/Q Adjustment
Description
Gain Balance
Amplitude gain balance, the amplitude difference between the two I/Q
channels is adjustable, the unit is dB
I Offset
The I-channel DC offset is jointly adjusted with the Q-channel DC offset
to compensate for the offset imbalance of the I/Q channels
Q Offset
Q-channel DC offset
Q Angle
The phase angle of the Q-channel is adjusted to compensate for the
phase imbalance of the I / Q channels
9.6.3 EasyIQ
The I/Q signal editing PC software EasyIQ supports the generation of I/Q data of various
modulation types such as 2ASK, 4ASK, 8ASK, BPSK, QPSK, 8PSK, DBPSK, DQPSK, D8PSK,
8QAM, 16QAM, 32QAM, 64QAM, 128QAM, 256QAM, 2FSK, 4FSK, 8FSK, 16FSK, MSK, multi-
tone, etc., and can directly download the data to the device for output.
Figure 9.7 EasyIQ operation interface
For detailed instructions on the use of EasyIQ, please refer to the help of the software itself.
Application example: Use EasyIQ to generate a pair of I/Q signals, download it
to the SDG7000A, modulate the I/Q signals to 100 MHz carrier, and observe the
IF output. The parameters of the I/Q signals are as follows:
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