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S:\Hp8960\E1962B CDMA 2000\Pi Release\Reference Guide\Chapters\cdma2000_ts_atxp.fm
Analog Transmit Power Troubleshooting
Analog Transmit Power Troubleshooting
Possible Setup Issues
During remote operation of the Analog Transmit Power measurement, you should configure the Trigger Arm
to Single. See “SETup:ATXPower” on page 513. If single triggering is used during manual operation, press the
START SINGLE key to trigger each measurement.
If digital measurements are active, turn them off or set their trigger source to Immediate. See “Triggering of
Measurements” on page 218.
The measurement results are altered by the Amplitude Offset value. See “Setting Up Amplitude Offsets and
Frequency Points” on page 81.
The expected signal amplitude and channel number (or frequency) must be specified for accurate
measurements. See “Active Cell Operating Mode” on page 86, “AVC Test Operating Mode” on page 87, and
“Receiver Control” on page 194 for information on setting the expected input frequency and power level.
The trigger source is always immediate for the Analog Transmit Power measurement. No synchronization or
external signals are required.
Over range and under range conditions may occur when testing a power class 4 mobile at power levels 0 or 1,
or when testing a power class 1 mobile at power levels 8, 9, and 10 (digital mode only). See “Cellular Band (800
MHz) Mobile Power Class Considerations for Expected Input Level” for an explanation of why this occurs and
what to do about it.
Interpreting Integrity Indicator values
See “Integrity Indicator” on page 222.
If over range (5) is returned; the input power has exceeded the test set’s internal sampler maximum value by
at least 3 dB during some part of the sampling or the input power has exceeded the calibrated range of the test
set’s power detector for the expected power setting.
If under range (6) is returned; the Analog Transmit Power result is more than 10 dB below the expected input
power level. Under range is also indicated if the input power is more than 2 dB below the calibrated range of
the test set’s power detector (-30 dBm).
If the signal has both over range and under range conditions only the over range (5) will be indicated.
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