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Table 1. Procedures to conﬁ gure the meter for power sweep mode.

No. Procedures

1. Connect sensor to power source.

2. Connect power meter TRIG OUT to power source TRIG IN using a BNC cable.

The same connection is applied for power source TRIG OUT to power meter

TRIG IN.

Press

. Set the Sensor Mode to AVG Only.

Press

, 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 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.

Press

or to conﬁ gure the measurement settings such as averaging,

measurement frequency, offsets, duty cycle and so forth.

10. Send *OPC command to meter.

11. Set the meter to continuous trigger mode by sending the INITiate:CONTinuous

ON command.

12. Conﬁ gure and set the required power sweep range and step on the power

source accordingly.

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

14. Poll the status of the power meter by sending *ESR?. *ESR will return 1 when

buffering is completed. Use FETCh? to retrieve all buffered measurements.

Frequency Sweep or

Power Sweep

There are two modes featured

in triggered average power

measurement:

Frequency sweep mode

Power sweep mode

Power Sweep Mode

Power sweep is generally used in a

power level calibration setup where

frequency is constant (CW frequency)

and the amplitude of the power source

signal is swept. This mode can be

used to characterize the ﬂ atness,

linearity or gain compression of a

device under test (DUT).

In this mode, no speciﬁ c setting or

information is required for the power

meter except for the number of

measurement steps. To conﬁ gure the

meter for power sweep mode, refer to

Table 1. and follow the procedures.

1 2 3 4 5 6 7 8

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Agilent Technologies B2911 Manuale Utente Pagina 3

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