User`s guide

274 Agilent X-Series Signal Generators User’s Guide
Digital Signal Interface Module (Option 003/004)
Operating the N5102A Module in Output Mode
selection should be used to avoid double filtering.
3. Select the data type that is appropriate for the test.
4. Press the Numeric Format softkey.
From this menu, select how the binary values are represented. Selecting 2’s complement allows
both positive and negative data values. Use the Offset Binary selection when components cannot
process negative values.
5. Select the numeric format required for the test.
6. Press the More (1 of 2) softkey.
From this softkey menu, select the bit order, swap I and Q, select the polarity of the transmitted
data, and access menus that provide data negation, scaling, gain, offset, and IQ rotation
adjustments.
7. Press the Data Negation softkey.
Negation differs from changing the I and Q polarity. Applied to a sample, negation changes the
affected sample by expressing it in the two's complement form, multiplying it by negative one, and
converting the sample back to the selected numeric format. This can be done for I samples, Q
samples, or both.
The choice to use negation is dependent on the device being tested and how it needs to receive
the data.
8. Press the Gain, Offset & Scaling softkey.
Use the softkeys in this menu for the following functions:
• reduce sample values for both I and Q using the Scaling softkey
• increase or decrease the sample values independently for I and Q using the I Gain and Q Gain
softkeys
• compensate for or add a DC offset using the I Offset and Q Offset softkeys
• rotate the data on the IQ plane using the Rotation softkey
9. Make any required scaling, gain, offset, or rotation adjustments to properly test the device.
10. Press Return > Return to return to the first- level softkey menu.
Configuring the Clock Signal
1. Refer to Figure 10- 14. Press the Clock Setup softkey.