Technical data

Chapter 13 383

Power Meter

Making an Average Power Measurement

Power Meter

Using the Power Meter Loss Field

Typical base stations exceed the maximum input to most power sensor heads.

Therefore an attenuator (typically a 40 dB 100 W attenuator) is required. The

measured value of the attenuator and connecting cables is entered into this field.

This value is then used when this field is set to

On. When this field is set to On, the

test set will add this loss value to the true measured value indicating the displayed

measured value.

Example: The base station transmits 40 dBm (10 W), the attenuator and RF cabling

15 If you have previously

stored PM loss from an

insertion loss

measurement, go to the

next step.

Press [PM Loss] and

enter the PM loss value.

For information on the effects of the PM Loss

function on the measurement, refer to “Using the

Power Meter Loss field, below.

16 Connect to the base

station.

Connect the power sensor to the signal to be

measured. The connection is typically after the

output of the power amplifier or duplexer. The

connection requires, in addition to the power sensor

and attenuator, a 2 ft. cable and two Type-N barrel

connectors.

Step Notes