195
S:\Hp8960\E1962B CDMA 2000\Pi Release\Reference Guide\Chapters\cdma2000_gen_bse_rcvr_test.fm
Receiver Control
Analog (AMPS Cellular) receiver power
For Active Cell operating mode with AMPS selected as the system type, the expected power from the mobile
station is set manually using the “RFANalyzer:MANual:ANALog:POWer[:SELected]” commands
NOTE During manual receiver power control, make sure you are using the correct operating mode for
the type of measurement you are making. Trying to make a digital measurement while operating
in AVC Test operating mode, or making an analog measurement while operating in IS-2000 Test
mode, will result in an error. The error occurs because the test set uses the expected power
setting for the operating mode you are using, and uses different methods to measure analog and
digital signals. Using the analog method to measure a digital signal, or vice versa, results in the
error.
Also, it is recommended that you specify the expected power each time you perform a handoff to a
new band or system type during manual receiver control. This ensures that the correct expected
power is set for the new channel settings.
Measurement receiver frequency
Measurement receiver frequency commands are used to manually tune the test set’s measurement
downconverter input signal path (see “Block Diagram” ).
The commands are:
• “RFANalyzer:CONTrol:MEASurement:FREQuency:AUTO” (to turn manual mode on/off)
• “RFANalyzer:MANual:MEASurement[:MFRequency]” (to specify a frequency and turn manual mode on)
• “RFANalyzer:MANual:MEASurement:FREQuency” (to specify a frequency)
Demodulation receiver frequency
Demodulation receiver frequency commands are used to manually tune the test set’s demodulation
downconverter input signal path (see “Block Diagram” ). The demodulation downconverter signal path is part
of the function that demodulates information from the mobile station’s reverse channel transmissions. The
commands are:
• “RFANalyzer:CONTrol:UPLink:FREQuency:AUTO” (to turn manual mode on/off)
• “RFANalyzer:MANual:UPLink[:MFRequency]” (to specify a frequency and turn manual mode on)
• “RFANalyzer:MANual:UPLink:FREQuency” (to specify a frequency)
NOTE Manual control of the demodulation receiver frequency is rarely needed. Use the measurement
receiver when manual receiver frequency control is required.