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NSIFAQsRFProducts

FAQ Topics

RF Products FAQ

1. What is the frequency range of the NSI Panther Receiver?

2. What are the differences between the various sources NSI supports for the Panther receiver?

3. Can I use Keysight mixers with the DFC LO/IF Unit?

4. Can the DFC mixers be used with an Keysight 85309A?

5. What is the gain value and gain uncertainty for the NSI Open-Ended Waveguide Probes?

6. What are the internal frequency band crossings for the Keysight PNA?

7. When operating in pulse mode can the Panther 9000 receiver operate with both pulsed Sig and Ref IF inputs?


1. What is the frequency range of the NSI Panther Receiver?

The Panther is an IF receiver, operating at 20 MHz. The Panther is typically paired with a distributed frequency converter system like the NSI-RF-5940 or the Keysight 85310, and with appropriate external sources, frequency converters, and mixers can operate from below 1 GHz up to higher than 100 GHz.
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2. What are the differences between the various sources NSI supports for the Panther receiver?

Click here for a chart comparing RF sources.

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3. Can I use Keysight mixers with the DFC LO/IF Unit?

This requires a NSI-RF-5949 mixer interface module. This module supports most mixer types, including waveguide mixers..

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4. Can the DFC mixers be used with an Keysight 85309A?

No, it's better to replace the 85309A with the DFC LO/IF Unit.

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5. What is the gain value and gain uncertainty for the NSI Open-Ended Waveguide Probes?

The gain of the OEWG probes are typically in the range of 4 dBi to 6 dBi. NSI can provide optional probe calibration if accurate probe gain values are needed, and the gain calibration uncertainty will be approximately +/-0.15 dB. Contact NSI's sales department for additional information.

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6. What are the internal frequency band crossings for the Keysight PNA?

The frequency range of the PNA covers several internal frequency bands. The higher the frequency range of the PNA, the larger the number of bands. Frequency band crossings depend on the PNA model and are listed in the document, PNA Band Crossings.pdf.

PNA frequency switching speeds vary with frequency and PNA model.

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7. When operating in pulse mode can the Panther 9000 receiver operate with both pulsed Sig and Ref IF inputs?

Yes, it is OK to pulse both the signal and reference IF channels on a Panther system. However, if the pulse width is less than 1 ┬Ás there may be an issue with time alignment of the pulse. The NSI pulse profile script has a selection for the reference: pulsed or CW.

The technique used to modulate the RF signal is also important. If the RF source is modulated directly then both Sig and Ref IF signals will be modulated. Alternately, a PIN switch may be used to modulate the source so that the Sig IF input is modulated and the Ref IF input is CW.
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