Agilent Technologies ESG Specifikace Strana 31

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Fully Coded 3GPP W-CDMA Personality Users and Programming Guide 2-15
ESG Family Signal Generators Using Functions
Option 200 Two ESG Downlink Measurement Setup
3. The individual ESG voltage adjustments are made to align the channel voltages
between the signal generators by making adjustments to the I/Q voltage scale. While
this scales the channels relative to each other, the total sum may be greater or less than
0 dB. To adjust total voltage:
a. On ESG 1, highlight the Voltage Other ESG: data field and enter the Voltage
This ESG value from ESG 2. Press
Enter to terminate the entry.
b. On ESG 2, highlight the Voltage Other ESG: data field and enter the Voltage
This ESG value from ESG 1 into the Voltage Other ESG: data field on ESG 2.
Press
Enter to terminate the entry. The resulting I/Q voltage scale is displayed on the
ESGs.
4. To scale the overall code domain power to 0 dB, press
Scale to 0dB on both ESGs. The
voltage and power values may change to reflect the power scaling. Press
Return on both
ESGs to open the W-CDMA menu.
NOTE Pressing Scale To 0 dB on both ESGs scales the individual channel power
levels so that the sum of the code domain power generated by both ESGs
equals 0 dB.This does not change the total, as set by the amplitude key.
a. Enter this value here.
b. Enter this
value here.
Resulting I/Q Voltage Scale
ESG 2
ESG 1
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