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GUI reference

R&S

ZNB/ZNBT

417User Manual 1173.9163.02 ─ 62

Start Power / Stop Power

Defines the sweep range for Power sweeps.

Remote command:

SOURce<Ch>:POWer<PhyPt>:STARt

SOURce<Ch>:POWer<PhyPt>:STOP

Step Attenuators

Defines an attenuation factor for the received waves at each analyzer port. At least one

receiver step attenuator must be installed to use this feature; see Chapter 4.7.23,

"Receiver step attenuators", on page 261.

Receiver step attenuators are used to adapt the received signal level to the input level

range of the analyzer. They protect the instrument from being overloaded or damaged,

e.g. if the DUT is a power amplifier.

Attenuation factors are port- and channel-specific. Possible values are 0 dB to 30 dB in

steps of 10 dB. The analyzer rounds any entered value below the maximum attenua-

tion to the closest step.

Note: Receiver step attenuators are optional hardware (see Chapter 4.7.23, "Receiver

step attenuators", on page 261).

If the number of test ports (on the VNA and connected switch matrices) is higher than

4, the "Step Attenuators" input fields are hidden. They are replaced by a "Step Attenua-

tors..." button that opens the following dialog:

Remote command:

[SENSe<Ch>:]POWer:ATTenuation

RF Off All Channels

"RF Off All Channels" switches the internal power source for all channels off (if

checked) or on. Switching off the RF power helps to prevent overheating of a connec-

ted DUT while no measurement results are taken.

Tip: Switching off the internal RF sources while an external generator is used can

improve the measurement accuracy. "RF Off All Channels" also deactivates external

generators, so you have to use the settings in the "Arb Frequency" tab of the Port Set-

tings dialog (with option R&S ZNB/ZNBT-K4).

Remote command:

OUTPut<Ch>[:STATe]

Stimulus softtool

R&S ZNB Series User Manual

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