Agilent Technologies N1911A Bedienungsanleitung PDF herunterladen (Seite 3)

Power Sweep Mode

Power Sweep mode is used in a power level calibration setup when the frequency is constant

(CW frequency) and the amplitude of the power source signal is swept. This mode can be used

to characterize the flatness, linearity, or gain compression of a DUT.

Table 2. Procedures to conﬁgure the N1911A/12A power meter for Power Sweep mode

Step Procedures

1 Connect the power sensor to the signal generator/signal source

2 Connect the power meter TRIG OUT to the signal source TRIG IN using a

BNC cable. The same connection is applied between the signal source TRIG

OUT and the power meter TRIG IN

3 Press [Channel] on the power meter. Set the Sensor Mode to AVG Only

4 Press [Trig/Acq] on the power meter, Acqn and select either Sing Trig or

Cont Trig

5 Press Settings>Source>Ext to set the trigger source to external

6 Press 1 of 2>Output>On to allow the TTL level high to be produced at TRIG

OUT

7 Press Slope and select + or – to set the trigger edge

8 Set the trigger buffer size by sending the SENSe:BUFFer:COUNt <buffer_

size> command to the meter through SCPI

9 Press [Channel] or [Meas] on the power meter to conﬁgure the

measurement settings such as averaging, measurement frequency, offsets,

and duty cycle

10 Send an *OPC command to power meter

11 Set the power meter to Continuous Trigger mode by sending the

INITiate:CONTinuous ON command

12 Conﬁgure and set the required power sweep range and step on the signal

source accordingly

13 Set the signal source trigger input and trigger output, then start sweeping

14 Poll the status of the power meter by sending an *ESR?. *ESR will return

1 when buffering is completed. Use FETCh? to retrieve all buffered

measurements

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Agilent Technologies N1911A Bedienungsanleitung Seite 3