Agilent Technologies 8960 Series 10, Справочное руководство

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S:\Hp8960\E1960A GSM Mobile Test Application\A.04 Release\Reference_Manual\Chapters\gen_bse_test.fm
Test Mode Operating Mode
CW Test Function Behavior
When the test set’s downlink function is set to CW the test set operates like a signal generator with level and
frequency controls. The Call Parms selections change from Cell Power to RF Gen Power, from Cell Band to RF
Gen Band, from Broadcast Chan to RF Gen Channel. The CW setting also gives the user the opportunity to set
output frequency using the RF Gen Freq parameter.
• The test set generates an unmodulated CW downlink signal.
• The RF generator’s power is set using the “CALL[:CELL]:RFGenerator:POWer[:SAMPLitude]” on page 280
command.
• The RF generator’s band is set using the “CALL[:CELL]:RFGenerator:BAND” on page 276 command.
• The downlink frequency is controlled by the RF Gen Channel and RF Gen Freq fields. The RF Gen Channel
field sets the generator to the frequency corresponding to the channel number in the current RF Gen Band
field using the
“CALL[:CELL]:RFGenerator:CHANnel[:SELected]” on page 277 command.
• The RF generator’s frequency is set using the “CALL[:CELL]:RFGenerator:FREQuency” on page 280
command, in this mode the user has direct control of the output frequency without making a channel
selection.
• By default, the test set’s receiver is configured to receive the mobile station’s signal at the current RF
generator channel setting. The test set’s receiver frequency can be set manually, which decouples the
automatic setting.
• No uplink demodulation or channel decoding is available. BER and uplink audio measurements will not
return any results.
When the user updates the RF Gen Channel parameter the RF Gen Freq parameter changes to indicate the
frequency for that channel. When RF Gen Freq is changed the RF Channel parameter does not change, this is
because the user may choose to select a frequency that is not a channel.
Example 12. CW Test Function Using RF Generator Frequency
The following example shows how to set up a test mode using the CW test function. In this example the test
set transmits a CW signal on DCS frequency 1805.4 mHz at an output power level of -80 dBm.
1. Set the RF generator output power to -80 dBm.
OUTPUT 714;”CALL:CELL:RFGENERATOR:POWER -80”
2. Select test mode.
OUTPUT 714;”CALL:OPERATING:MODE TEST”
3. Select PGSM as the RF generator band.
OUTPUT 714;”CALL:CELL:RFGENERATOR:BAND DCS”
4. Select CW as the test function.
OUTPUT 714;”CALL:FUNCTION:DOWNLINK CW”
5. Configure the test set’s output frequency to 1805.4 MHz.
OUTPUT 714;”CALL:CELL:RFGENERATOR:FREQUENCY 1805.4MHZ”