Using the Channel Scanner

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The Channel Scanner measures the power of multiple transmitted signals. It is most useful for measuring channel power in TDMA, GSM, AMPS, and iDEN channel bands. Channel power may be measured on a single channel or across multiple channels or frequencies. The Channel Scanner can be used to measure TDMA, AMPS, GSM and iDEN adjacent channel power.

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CAUTION:

When measuring multiple channels, the combined channel power must not exceed +20 dBm at the RF In port.

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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.

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NOTE:

For complex modulation such as CDMA, W-CDMA, 1xEV-DO and GSM, the frequency error measurement is not accurate (see respective analyzers for detailed frequency error results).

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NOTE:

The RF In Loss can be added manually or automatically by performing an insertion loss measurement. For measurement instructions refer to "Performing (and Calibrating) a Basic One Port Insertion Loss measurement" or "Normalizing and Performing a Basic Two Port Insertion Loss Measurement".

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