RF Input Average Noise Density

Table 14. RF Input Average Noise Density (dBm/Hz), Nominal

Configuration A
Center Frequency Reference Level Specification Configuration
A
50 MHz to <200 MHz -30 dBm -166
200 MHz to 3 GHz -166
>3 GHz to 8 GHz -164
>8 GHz to 12 GHz -163
>12 GHz to 18 GHz -162
>18 GHz to 23 GHz -160
50 MHz to 150 MHz 0 dBm -143
>150 MHz to <200 MHz -144
200 MHz to 23 GHz -144

Conditions: Input terminated with a 50 Ω load; 10 averages; measured 20 MHz offset from the center frequency, normalized to 1 Hz bandwidth.

Nominal 3 dB noise density improvement for 0 dBm reference levels when Center Frequency ≥ 1.75 GHz and Signal Bandwidth ≤ Maximum Offset Bandwidth or when Offset Mode is Enabled. Example: between 5.25 GHz to 23 GHz at 0 dBm reference level, the nominal performance is -147 dBm/Hz when Signal Bandwidth ≤ 900 MHz for 2 GHz bandwidth purchase options.

RF Input Third-Order Intermodulation

Table 15. RF Input Third-Order Intercept Point (IIP3 dBm), Nominal

Configuration A
Center Frequency Reference Level Specification Configuration
A
50 MHz to <200 MHz 0 dBm 22
200 MHz to 1 GHz 22
>1 GHz to 3 GHz 17
>3 GHz to 6 GHz 19
>6 GHz to 8 GHz 21
>8 GHz to 23 GHz 22
50 MHz to <200 MHz 15 dBm 37
200 MHz to 1 GHz 37
>1 GHz to 3 GHz 33
>3 GHz to 6 GHz 34
>6 GHz to 8 GHz 36
>8 GHz to 23 GHz 37
Conditions: Measured when receiving two -6 dBr tones at the following offsets from the center frequency:
  • Center frequency <1 GHz: +10 MHz and +10.7 MHz
  • Center frequency ≥1 GHz: +95 MHz and +105 MHz

RF Input Phase Noise

Figure 18. RF Input Phase Noise, Measured

Configuration A



Measured data post-processed using Savitzky-Golay filter.

Conditions: 0 dBm Reference Level.

RF Input Non-Harmonic Spurs

Table 16. RF Input Non-Harmonic Spurs (dBc), Nominal

Configuration A, Configuration B.1
Center Frequency Specification Configuration
A B.1
10 kHz ≤ Offset < 1 MHz 1 MHz ≤ Offset < 10 MHz Offset ≥ 10 MHz 10 kHz ≤ Offset < 1 MHz 1 MHz ≤ Offset < 10 MHz Offset ≥ 10 MHz
50 MHz to to <200 MHz -85 -88 -67 — — —
200 MHz to 1.75 GHz -85 -88 -67 -85 -82 -63
>1.75 GHz to 3 GHz -83 -85 -66 -80 -82 -66
>3 GHz to 6 GHz -78 -83 -66 -76 -78 -66
>6 GHz to 8 GHz -75 -80 -69 -73 -75 -66
>8 GHz to 12 GHz -73 -72 -60 -65 -72 -60
>12 GHz to 18 GHz -69 -71 -60 -65 -71 -60
>18 GHz to 22 GHz -67 -72 -62 -64 -65 -60
>22 GHz to 23 GHz -67 -70 -63 -63 -66 -63

Non-harmonic spurs exclude RF harmonic spurs, baseband harmonic mixing spurs, residual LO, and residual sideband image.

Conditions: Reference level 0 dBm; input tone level -6 dBm.

Measured with a CW signal at the center frequency unless both Signal Bandwidth > Maximum Offset Bandwidth and Center Frequency > 1.75 GHz, in which case measured at 20 MHz offset from the center frequency.

For Offset ≥ 10 MHz, the maximum offset is limited to within the equalized bandwidth of the referenced center frequency.

Offset refers to ± desired signal offset (Hz) around the tone frequency.

RF Input LO Residual Power

Table 17. RF Input LO Residual Power (dBr), Nominal

Configuration A
Center Frequency Specification Configuration
A
50 MHz to <200 MHz —
200 MHz to 1.75 GHz —
>1.75 GHz to 3 GHz -59
>3 GHz to 6 GHz -58
>6 GHz to 8 GHz -69
>8 GHz to 23 GHz -51

Conditions: -30 dBm to +25 dBm; maximum LO residual power when receiving a CW signal anywhere within the full instrument bandwidth. Measurement performed immediately after instrument self-calibration.

The PXIe-5842 uses the low frequency subsystem to directly acquire the RF input signal for Center Frequency < 1.75 GHz.
Figure 19. RF Input LO Residual Power, Measured

Configuration A



Conditions: Measured by sweeping a 0 dBr CW signal across the bandwidth and calculating the maximum residual LO power.

Note Measurements below 1.75 GHz are not applicable because the PXIe-5842 uses the low frequency subsystem to directly digitize the RF input signal for Center Frequency < 1.75 GHz.

RF Input Residual Sideband Image

Table 18. RF Input Residual Sideband Image (dBc), Nominal

Configuration A
Center Frequency Specification Configuration
A
50 MHz to <200 MHz —
200 MHz to 1.75 GHz —
>1.75 GHz to 3 GHz -64
>3 GHz to 6 GHz -52
>6 GHz to 8 GHz -50
>8 GHz to 12 GHz -57
>12 GHz to 18 GHz -53
>18 GHz to 23 GHz -58

Conditions: Reference level is -30 dBm to +25 dBm; maximum residual sideband image when receiving a CW signal anywhere within the full instrument bandwidth. Measurement performed immediately after instrument self-calibration.

The uses the low frequency subsystem to directly acquire the RF input signal for Center Frequency < 1.75 GHz.
Figure 20. RF Input Residual Sideband Image, Measured

Configuration A



Conditions: 0 dBm Reference Level.

Measured data post-processed using Savitzky-Golay filter.