The TX dynamic power measurement does not run concurrently with any other measurements. If any measurements are running, they are closed when TX dynamic power measurement is initiated, and a message is displayed indicating that a measurement has been closed. Activating another measurement inactivates the TX dynamic power measurement.
If the TX dynamic power measurement is running at the time the power control transient transmission starts (see
Starting the Reverse CLPC Transient ) the measurement will be closed and its operation aborted. Moreover, the TX dynamic power measurement will not be able to start (become initiated) while the transient transmission is in progress.
Possible Setup Issues
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- The TX dynamic power measurement should be used when call connection status is Idle since mobile station must be in a test mode. Otherwise, the measurement may be hang (waiting for an RF Rise trigger from the mobile station) and the measurement results are invalid even if they are available when the measurement is armed.
- The TX dynamic power measurement uses single trigger arm (see Triggering of Measurements for details). Use the INIT command or press the START SINGLE key to arm the TX dynamic power measurement.
- When the TX dynamic power measurement is armed, it will hang until the test set receives an RF Rise impulse (>20 dB) trigger from the mobile station or the timeout period (if set to On, see TX Dynamic Power Measurement Parameters ) expires.
- The TX dynamic power measurement requires receiver power control in manual mode. If Receiver Power Control is set to Auto (see Receiver Control ) when the measurement is armed, the measurement will not start and an error is returned to indicate the error condition. For manual receiver power control, be certain that you have entered the correct frequency and power values to match your mobile station's test mode.
- When the TX dynamic power measurement is in progress, the measurement could be aborted due to one or more trigger missed. An example condition that may cause the trigger missed would be GPIB or LAN activities occur during the measurement.
- For front panel graph control, the
Start Step and the Span settings can not add up to more than 100. Otherwise, the new value will be rejected with an error indicating "Upper limit exceeded".
Troubleshooting Techniques
Check to see if an integrity indicator other than 0 (normal) was returned with a measurement result (see Integrity Indicator ).
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- If Trigger Missed (30) is returned, one or more triggers were missed during the measurement. It is to prevent the TX dynamic power measurement from hanging and provide an early termination for the measurement.
- If Over Range (5) is returned; the input power has exceeded +37 dBm or is greater than +9 dB above the expected power level of the receiver.
- If Under Range (6) is returned; the input power is below -61 dBm or is less than -9 dB below the expected power level of the receiver.
- If the measurement has both over range and under range conditions, only the over range (5) will be indicated.
- If the measurement has several errors, the error which has the highest priority will be indicated.