N5264A Measurement Receiver

The N5264A is a PNA-X with no Source Ports or Tunable receivers. This makes the N5264A a very fast and very sensitive IF receiver that has been designed specifically for antenna and radar cross-section (RCS) measurements.  When used with external sources, the N5264A can make frequency-scan measurements of antennas, or make RCS measurements in time domain.

• N5264A Options and Limitations

• Configuring the N5264A

• IF Receivers

• Internal LO Source (Opt 108)

• External Sources

• How to Create Measurements

• Calibrating the N5264A

• See Also

• FIFO and other Antenna Features

• Antenna Selection Guide

• 85309 Manual updated for PNA -P/N 85310-90002

• Antenna and RCS Measurement Configurations

• N5264A Specs

Typical N5264A Application

Far Field Outdoor Antenna Measurements

N5264A Options and Limitations

The N5264A has the following options:

• IF Receiver (base model) - The A,B,C,D, and R receivers are always set at the specified IF frequency.

• IF Receiver + LO source (Opt 108) - In addition to the receiver-only option,  this option adds a 10 MHz to 26.5 GHz LO source.

• Fast-Sweep / FIFO Mode (Opt 118) - These features together allow you to make very fast measurements and save the data to a remote computer.  Learn more.

Limitations

The following PNA features are NOT available on the N5264A

• No Source ports

• No S-Parameters - Arbitrary ratioed parameters ARE allowed.

• No Application support

• Limited Calibrations

Configuring the N5264A

IF Receivers

• The five IF receiver inputs are on the N5264A rear panel.

• All five IF receivers are measured at the same time. However, only those measurements that are displayed are updated.

• External mixers are always required to down-convert signals to the IF frequency.

• The default IF frequency for the N5264A is 7.605634 MHz.

• Change the IF frequency to any value between +14.9999 MHz and -14.9999 MHz using SENS:IF:FREQ (SCPI) or IFFrequency (COM) commands.

Internal LO Source (Option 108) - 10 MHz to 26.5 GHz

The LO source output connector is on the N5264A rear panel.

The power level of the internal LO source is typically about +10 dBm and can NOT be changed.

To change the frequency of the LO Source:

1. Change the IF frequency of the measurement if necessary.

2. On the FOM dialog, change Receivers frequencies to the RF frequency range to be measured.

3. The LO Source frequency range is set automatically. This frequency value can not be viewed.

External Sources  

Because the N5264A has no internal sources (except for the optional LO), newly created measurements are displayed with a source port = 0 (zero).

External sources can be configured so that they are controlled by the N5264A.  Learn how to configure an external source.

Once configured, all existing and new measurements are changed to use the external source as the source port. When two or more sources are configured, the first configured source is displayed by default.

The external source settings can be changed from the following dialogs:

• Power and Attenuators dialog - Controls the ON | OFF state (set to Auto by default) and Power level of the external source.

• FOM dialog - Controls the frequency range. External sources are listed by name and uncoupled by default.

How to Create Measurements

Create ratioed and unratioed measurements using the standard Receivers tab.

S-parameters are not available.

Calibration

The only calibrations available are Response, Source Power and Receiver calibrations.

These are performed from the Unguided Cal Wizard.

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