855
AMPTD Y Scale
faster, and is less subject to wear. These advantages primarily aid in remote operation and are negligible for front panel use. See “Using the Electronic Attenuator: Pros and Cons” on page 856 for a detailed discussion of the pros and cons of using the electronic attenuator.For the single attenuator configuration, for SCPI backwards compatibility, the “soft” attenuation feature replaces the dual attenuator configuration’s electronic attenuator. All the same couplings and limitations
apply. See “Attenuator Configurations and Auto/Man” on page 854
See “More Information” on page 856
Key Path: AMPTD Y Scale, Attenuation
Remote Command: [:SENSe]:POWer[:RF]:EATTenuation:STATe OFF|ON|0|1
[:SENSe]:POWer[:RF]:EATTenuation:STATe?
Example: POW:EATT:STAT ON
Dependencies: This key only appears in Dual Attenuator models with an Electronic
Attenuator installed. It does not appear in models with the Single Attenuator
configuration, as in the single attenuator configuration there is no “electronic
attenuator” there is only a single integrated attenuator (which has both a
mechanical and electronic stage). However, in the single attenuator
configuration, EATT SCPI commands are accepted for compatibility with
other X-series instruments and set a “soft” attenuation as described in
“Attenuator Configurations and Auto/Man” on page 854
The electronic attenuator (and the “soft” attenuation function provided in
single attenuator configurations) is unavailable above 3.6 GHz. Therefore, if
the Stop Frequency of the analyzer is > 3.6 GHz then the Enable Elec Atten
key will be OFF and grayed out.
If the Internal Preamp is on, meaning it is set to Low Band or Full, the
electronic attenuator (and the “soft” attenuation function provided in single
attenuator configurations) is unavailable. In this case the Enable Elec Atten
key will be OFF and grayed out.
If either of the above is true, if the SCPI command is sent, an error indicating
that the electronic attenuator is unavailable will be sent.
If the electronic/soft Attenuator is enabled, then the Stop Freq of the analyzer
is limited to 3.6 GHz and the Internal Preamp is unavailable.
The SCPI-only “soft” electronic attenuation for the single-attenuator
configuration is not available in all measurements; in particular, it is not
available in the Swept SA measurement.
Couplings: Enabling and disabling the Electronic Attenuator affects the setting of the
Mechanical Attenuator (in dual attenuator configurations). This is described
in more detail below this table.
Preset: OFF for Swept SA measurement; ON for all other measurements that support
the electronic attenuator
State Saved: Saved in instrument state
Initial S/W Revision: Prior to A.02.00