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S:\Hp8960\E1962B CDMA 2000\Pi Release\Reference Guide\Chapters\cdma2000_gen_bse_rcvr_test.fm
Receiver Control
Receiver Control
The test set normally sets all receiver parameters automatically using call control settings. You may want to
control the test set’s receiver parameters manually rather than allowing the test set to control them. This
ability is referred to as manual receiver control.
Refer to the “Block Diagram” for a description of the “Signal Downconversion” paths.
Manual Receiver Control Parameters
The following parameters manually control the test set’s receiver:
• Digital receiver power (Rcvr Power Ctrl)
• CW receiver power
• Measurement receiver frequency (Meas Frequency)
• Demodulation receiver frequency
Manual vs. Automatic Receiver Control
• Auto mode is the default for all operating modes except CW (which defaults to manual mode). The receiver’s
expected power and frequency settings are set automatically according to the call control settings you
specify (Channel number, AVC Channel, Anl MS TX Level, Cell Band, Cell Power, and amplitude offset).
• Manual mode allows you to override some or all of the automatic settings by first selecting the manual
mode for the setting and then specifying the desired value. You can set the receiver’s expected power by
pressing the Call Parms, More key until 3 of 3 is displayed. Then, select Manual in the Rcvr Power Ctrl
field. You can set the receiver’s measurement downconverter tune frequency manually by pressing the
Manual key with the Meas Frequency field. A full or partial preset of the test set, including cycling power,
returns the test set back to auto mode.
Manual Receiver Control
The following parameters manually control the test set’s receiver:
Digital receiver power
For all operating modes except for CW and Active Cell with AMPS system type selected, the expected power
from the mobile station is set manually using the “RFANalyzer:MANual:POWer[:SELected]” command. If a
call is connected, and reverse power control (Rvs Power Ctrl) is set to active bits, closed loop power control will
immediately control the mobile station’s power level to the value entered in the Receiver Power field. To
control the mobile station’s power level using open loop power control, specify alternating bits in the Rvs
Power Ctrl field and adjust the Cell Power level.
CW receiver power
For CW operating mode, the expected power from the mobile station is set manually using the
“RFANalyzer:CW:EXPected:POWer” commands.
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