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S:\Hp8960\E1962B CDMA 2000\Pi Release\Reference Guide\Chapters\cdma2000_gen_bse_avctest.fm
AVC Test Operating Mode
AVC Test Mode Operation Using Manual Receiver Control
Note: Changing the operating mode affects manual receiver control parameters. See “Effects on Receiver
Control When Changing Operating Mode” on page 196.
The following procedure demonstrates the use of AVC test mode where the base station emulator’s RF
generator frequency, measurement receiver frequency, and expected input power are manually configured.
Manual control is not commonly used in production testing, but is provided to allow the measurement receiver
and RF generator to be used to perform tests where automated control may not be used; such as when tuning
the receiver to make measurements outside of the cellular band during AMPS testing.
This procedure provides general programming steps, but is not written around any specific test requirements.
Some of the settings shown are the default power up settings for AVC Test mode.
Putting the mobile in analog test mode at the correct channel number and power setting is the responsibility
of the user.
1. Select AVC Test mode.
OUTPUT 714;”CALL:OPERating:MODE AVCT”
2. Turn on the base station emulator’s RF Generator and set the output level to -50 dBm.
OUTPUT 714;”CALL:POWer -50”
3. Set the base station emulator’s RF generator to 893.310 MHz; the forward channel frequency for channel
777.
OUTPUT 714;”CALL:RFGenerator:FREQuency 893.310 MHZ”
4. Enable manual receiver frequency control and tune the measurement receiver to 848.31 MHz (reverse
channel 777).
OUTPUT 714;”RFANalyzer:MANual:MEASurement 848.310 MHZ”
5. Enable manual control of the receiver’s expected analog input level power setting.
OUTPUT 714;”RFANalyzer:CONTrol:POWer:AUTO OFF”
6. Set the expected input level value to correspond to mobile station power level two.
OUTPUT 714;”RFANalyzer:MANual:ANALog:POWer 28 DBM”
7. Turn the forward channel AVC SAT on.
OUTPUT 714;”CALL:AVCTest:AVC:SATone:STATe ON”
8. Set the SAT color code to SAT1 (5970 Hz).
OUTPUT 714;”CALL:SETup:AVC:SATone SAT1”
9. Turn on internal FM, and set the deviation to 8.0 kHz and the rate to 1004 Hz.
OUTPUT 714;”CALL:FM:INTernal 8 KHZ;INT:FREQuency 1004 HZ”
If you do not want internal FM on, use the FM State command to turn it off:
OUTPUT 714;”CALL:FM:INTernal:STATe OFF”
10.Turn external FM off.
OUTPUT 714;”CALL:FM:EXTernal:STATe OFF”
11.Connect the mobile’s antenna port to the test set’s RF IN/OUT port and put the mobile in analog test mode,
transmitting at power level two and channel 777.
If your mobile’s audio is not muted, you should hear a 1004 Hz tone out of the speaker. If you have an acoustic
or direct connection to the mobile’s audio output, you can make audio measurements through the test set’s
AUDIO IN connections. See “Audio Analyzer Measurement Description” on page 38.
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