4 Using E9320 E-Series Power Sensors
166 Keysight N1911A/1912A User’s Guide
Introduction
The E9320 E-Series power sensors have dual modes of operation.
– The normal mode is optimized for a wider bandwidth but with reduced
dynamic range. The instantaneous power of an RF signal can be detected with,
depending on the sensor type, up to 5 Mhz of video bandwidth (modulation
bandwidth). Use this mode to measure the peak and average power of pulsed
or modulated signals.
–The average-only mode is optimized for high accuracy and wide dynamic
range. Use this mode to measure the average power of signals below the
dynamic range of normal mode.
In normal mode the P-Series power meters and E9320 E-Series power sensors
continuously sample the RF signal at a 20 Msamples/s rate. A trigger can be
taken from a rising or falling edge of an RF signal pulse or controlled externally via
GPIB or TTL input.
The term ‘video’ is applied here to a signal that has been amplitude
demodulated from an RF carrier but contains components in the RF part of the
spectrum. For a power meter it refers to the output of the sensor diodes in
normal mode.
Table 4-1 Sensor Bandwidth
Video Band wid th Setting
Sensor Low Medium High Off
E9321A
E9325A
30 kHz 100 kHz 300 kHz
300 kHz
[a]
[a] The Low, Medium, and High settings provide flat filter responses with very sharp cutoff points by applying digital
signal processing techniques. The Off setting removes all signal conditioning. Refer to Figure 4-1.
E9322A
E9326A
100 kHz 300 kHz 1.5 MHz
1.5 MHz
[a]
E9323A
E9327A
300 kHz 1.5 MHz 5 MHz
5 MHz
[a]
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