Making 1xEV-DO Tx Measurements
1xEV-DO transmitter measurements verify proper transmitter performance and are typically made with the access network (AN) still in service. The Access Network only needs to be taken out of service when you are setting or measuring the Tx Power Out level, and this is typically only performed during Installation, Optimization, and Preventative Maintenance.
- "Common 1xEVDO Tx Analyzer Measurements"
- "Preparing to Make 1xEVDO Tx Analyzer Measurements"
- "Performing a Basic 1xEVDO Transmitter Measurement"
Important metrics for both Tx and Over the Air measurements include:
- Frequency Error
- PN and Time Offsets
- Non Idle Power
- Idle On/Off Ratio
- Pilot + MAC power
- Pilot Rho (estimated)
- MAC Rho (estimated)
CAUTION: The maximum power for the RF In (Port 1) and RF Out/SWR (Port 2) ports is +20 dBm (100 mW). When using the 8481A/8482A Power Sensors, the maximum input power applied to the Power Sensor is +24 dBm (300 mW). When using the 8481D Power Sensor, the maximum input power is +20 dBm (100 mW). When directly coupled to a base station (BTS) or Access Network (AN), the test set can be damaged by excessive power applied to any of these three ports.
To prevent damage in most situations when you directly couple the test set to a base station, use the high power attenuator between the test set and the BTS.