Power Meter - Keysight HSA N9342C Demonstration Manual

24 | Keysight | N9342C/N9343C/N9344C HSA Handheld Spectrum Analyzer - Demonstration Guide
Demonstration 14

Power meter

The Keysight U2000 Series USB power sensor works with the N934xC HSA to provide
high accuracy average power measurement. The frequency range for power measure-
ments is from 9 kHz to 24 GHz and power levels from -60 dBm to +20 dBm at a mea-
surement speed of up to 1,000 readings per second in buffered mode. The N934xC HSA
provides power to the sensor and retrieves measurement results over USB.
The N934xC HSA displays the measurement results and provides pass/fail indication
with user-settable upper and lower limits. The results are displayed in dBm and W for
absolute power measurements and in dB and percentage for relative measurements.
Results can be displayed on a fast updating meter display or on a chart of power versus
time.
In this demonstration, we use the N934xC HSA with U2000A USB power sensor to mea-
sure the output power of an external signal generator.
Figure 26. Power meter mode
Instructions for the source
Set 2 GHz center frequency, amplitude -10 dBm, W-CDMA signal
Instructions for HSA
Connect the Keysight U2000A power sensor to the N934xC HSA via USB
cable
Turn on the power meter function (N934xC-PWM option needed) (Figure
26)
Note: Please don't operate until the warning message "Connection initial-
ization" disappears and model number "U2000A" appears on the display
Zero and the zero type is INT
Note: "Zero calibration, waiting..." warning message appears
Connect the signal generator's RF output to the USB power sensor's RF
IN connector and turn on the signal generator's output
Turn on the limit function. Sound warning when power is beyond limit
value
Change the display mode from meter to chart (Figure 27)
Figure 27. Chart mode
Keystrokes for the source
[Preset], [Freq], [2], {GHz}, [Amplitude], [-10], {dBm}, [Mode], {W-CDMA},
{Arb W-CDMA (3GPP 12-2004}, {W-CDMA (On)},
[Mod On], [RF On]
Keystrokes for HSA
[Mode], {Power Meter}
{Zero}, {Zero Type} to INT
{Return}, {Meas Setup}, {Limits}, {Limits (on)}, {Limit Beep (On)}, {Return},
{Return}
{Meas Disp}, {Disp Mode (Chart)}