Chapter 8 61
Power Statistics CCDF Measurements
Measurement Procedure
Measurement Procedure
Step 1. Press Mode, TD-SCDMA with HSPA/8PSK to enable the TD-SCDMA with
HSPA/8PSK mode measurements.
Step 2. Press
Mode Preset to preset the analyzer.
Step 3. Select the signal inputs for the measurement.
For BBIQ measurements this will be the I or I input and the Q or Q
input. Use the procedure in “Using Option BBA Baseband I/Q Inputs.“
Step 4. Press
Input/Output, External Gain, BTS and enter the number and −dB
according to the external attenuator connected to the analyzer.
Step 5. Press
Mode Setup, Radio, Device to toggle the device to BTS.
Step 6. Press Meas, Power Stat CCDF to initiate the power statistics CCDF
measurement.
Step 7. Press
Trigger to select the appropriate trigger source External 1.
If no measurement is performed and only a symbol of yellow ‘*’ displays
on the top right of the screen, you need to check the trigger settings.
You need the correct trigger signal to make the CCDF measurement.
Step 8. Press
FREQ Channel, 2, GHz to set the center frequency to 2 GHz.
Step 9. Press
Meas Setup to check the keys available to change the measurement
parameters from the default condition.
For more information about changing measurement parameters, see
N9079A TD-SCDMA with HSPA/8PSK User’s and Programmer’s
Reference.
If you have a problem, and get an error message, see the “Instrument
Messages Guide”.
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