 | AVERAGES Sets the number of measurements to be averaged. MAX HOLD Sets the displayed measurement to show the maximum measured power when enabled, and places a marker on the scale at the maximum measured value. Note that changing any parameter resets this feature. If averaging is selected (AVERAGES > 1), then Max Hold displays the maximum value of non-averaged data. SUMMARY TABLE Displays both forward and reverse measurement type readings when the toggle is turned on. When toggled off, the forward and reverse measurement readings are displayed in the measurement table. MODULATION TYPE: Selects the one of the following modulation type for Inline power sensors only. The modulation type is used to apply correction factor that refines the Peak Envelope Power (PEP) calculation. It is enabled only when FORWARD MEAS is set to Peak power Envelope or Crest Factor: • GSM GPRS EDGE • WCDMA HSPA Single Carrier • WCDMA HSPA Multi Carrier • ISDB T • CDMA IS95 2000 EVDO FORWARD MEASUREMENT Selects one of the following forward direction measurements: • Forward Average: Measures the average power in the forward direction. • Crest Factor: Measures the crest factor in the forward direction. Crest Factor is a ratio of average power to Peak Envelope Power (PEP). See Figure: Crest Factor Measurement. • Burst Average Manual: Measures the average power within the signal bursts (in the forward direction). You must manually define the duty cycle of the bursts in order to complete the averaging calculation. • Peak Envelope Power: Measures the peak power in the forward direction.The PEP is the highest single power measurement from within the envelope power readings. Detecting the PEP correctly requires that the modulating signal’s change in amplitude is at a rate within the video bandwidth of the sensor. See Figure: Peak Envelope Power (PEP) Measurement. • CCDF: Measures the value of the Complementary Cumulative Distribution Function (CCDF). A Cumulative Distribution Function (CDF) describes the probability that the signal power is less than or equal to a threshold value. The Complementary Cumulative Distribution Function (CCDF) describes the probability that the signal power is greater than a threshold value. See Figure: CCDF Measurement. • Burst Average Auto: Measures the average power within the signal bursts (in the forward direction). In auto, the sensor determines the duty cycle of the bursts in order to complete the averaging calculation. |
REVERSE MEASUREMENT Selects one of the following reverse direction measurements: • Reverse Average: Measures average power in the reverse direction. • Reflection Coefficient: Measures the reflection coefficient (reflected power / forward power) • Return Loss: Measures the return loss. VSWR: Measures the voltage standing wave ratio (VSWR).DUTY CYCLE Sets the duty cycle, is activated only when the forward measurement is set as Burst Average Manual. The duty cycle range lies between 0.1% to 100% VIDEO BW Sets the video bandwidth as Full, 4 kHz or 200 kHz. CCDF THRESHOLD Sets the CCDF threshold and is activated only when forward measurement is set as CCDF. The threshold range is from 3 dBm to 54.77 dBm. This option is enabled only when FORWARD MEAS is set to CCDF. SENSOR INFO Displays details of the power sensor connected to the instrument. |
