Agilent Technologies 1912A Bedienungsanleitung PDF herunterladen (Seite 8)

Faster Frequency/

Power Sweep

Measurement

In conventional frequency/power sweep measurement, users have to manually

change the frequency/power of signal source before measurements are displayed

on the front panel of the power meter. Completing the frequency sweep (from

1 GHz to 10 GHz) requires a longer test time, but in manufacturing it is test-time

efﬁciency that is the main factor in purchasing decisions. Faster frequency/power

sweep measurement via external triggering capability in CW mode will improve

the test time without compromising the measurement accuracy. Faster frequency/

power sweep measurement can be ordered as an option and functions only with

average/CW power sensor. The USB power sensor can also perform the frequency/

power sweep measurement when it is connected to the N1913/1914A. For more

information about USB power sensor frequency/power sweep measurement,

please refer to the Agilent U2000 Series USB Power Sensor Programming Guide.

The fast frequency/power sweep measurement of the N1913/1914A allows

the signal source to trigger the power meter via an external TTL signal for

measurement (see Figure 9). Every triggered measurement will be stored in a user-

deﬁned sized buffer in the power meter. The size of the buffer can be captured in

the range of 1 to 2,048 measurements, and triggered measurement can be retrieved

using SCPI. Users can deﬁne the number of measurement in a buffer (GPIB buffer

mode) and retrieve the measurement results from the instrument for later analysis.

This eliminates the need for real-time reading of the results.

Figure 9. One way/two way communication of frequency/power sweep of signal source and

power meter

Frequency sweep mode

Frequency sweep is a measurement whereby the amplitude of the power level is

constant and the frequency varies. In this type of measurement, the frequency of

the signal generator and the power meter needs to be changed point by point via

SCPI before each power measurement is taken. This mode is used to determine

the measurement response between two different signals in accordance with the

increment of the frequency set.

Power sweep mode

Power sweep is a measurement whereby the frequency of the signal is constant

and the amplitude varies. In this type of measurement, the amplitude of the

signal generator needs to be changed point by point via SCPI and each power

measurement is taken using a power meter. This mode is usually used to determine

the 1 dB gain compression point of a DUT at a particular/constant frequency.

For more information about fast measurement of frequency/power sweep, refer to

Agilent Maximizing Measurement Speed Using P-Series Power Meters Application

Note, literature number 5989-7678EN.

N1913/1914A

power meter

(optional connection)

Trigger out

Trigger in

ESG signal source

Average power sensor

BNC cable

Trigger out

Trigger in

1 2 3 4 5 6 7 8 9 10 11 12 13 14

Kommentare zu diesen Handbüchern

Keine Kommentare

Agilent Technologies 1912A Bedienungsanleitung Seite 8

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Multimeter Agilent Technologies 1912A