Specifications

19
Reference lines
Accuracy
Equals the sum of reference level accuracy plus the scale
fidelity between the reference level and reference line.
Dynamic range
Spurious responses
For total signal power of < –40 dBm at the input mixer of
the analyzer, all image and out-of-band mixing responses,
harmonic and intermodulation distortion products are
> 75 dB below the total signal power for input signals
10 MHz to 1500 MHz, and > 70 dB below the total signal
power for input signals 100 Hz to 10 MHz.
Second harmonic distortion: For a signal –30 dBm at the
mixer and > 10 MHz, second harmonic distortion > 70 dB
down; 60 dB down for signals < 10 MHz. Refer to Figure 3
for typical second harmonic distortion levels.
Figure 3. Optimum dynamic range
Third order intermodulation distortion: For two signals
each –30 dBm at the mixer, third order intermodulation
produces:
Signal Center Relative
separation frequency distortion T.O.I.
< 100 kHz > 100 kHz < –70 dBc +5 dBm
> 100 kHz > 10 MHz < –80 dBc +10 dBm
4 30 kHz and 100 kHz bandwidth switching uncertainty figures only applicable
≤ 90% relative humidity.
5 Correction only applies over the 0 dBm to –55.9 dBm range.
Frequency response (flatness) uncertainty
≥ 10 dB RF Attenuation
Input 1: ±1dB, 100 Hz to 500 MHz; ± 1.5 dB 100 Hz
to 1500 MHz.
Typically: ±0.75 dB 100 Hz to 500 MHz; ±1.0 dB 100 Hz
to 1500 MHz; +1, –4 dB 1500 MHz to 1650 MHz.
Input 2: ±1 dB, 100 kHz to 1500 MHz.
Typically: ±0.7 dB 100 kHz to 1500 MHz; +1, –4 dB
1500 MHz to 1650 MHz.
Amplitude temperature drift
At –10 dBm reference level with 10 dB input attenuation
and 1 MHz resolution bandwidth, ±0.05 dB/°C
(eliminated by recalibration).
Input connector switching uncertainty
±0.5 dB when calibration and measurement do not
use same RF input.
Input attenuation switching uncertainty
±1.0 dB over 10 dB to 70 dB range.
Resolution bandwidth switching uncertainty
4
(referenced to 1 MHz bandwidth) — corrected (uncorrected)
Resolution BW 20 to 30 °C 0 to 55 °C
(After 1-hour warm-up)
10 Hz ±1.1 dB (±2.0 dB) (±4.0 dB)
30 Hz ±0.4 dB (±0.8 dB) (±2.3 dB)
100 Hz to 1 MHz ±0.2 dB (±0.5 dB) (±2.0 dB)
3 MHz ±0.2 dB(±1.0 dB) (±2.0 dB)
Log scale switching uncertainty
±0.1 dB corrected (±0.5 dB uncorrected).
IF gain uncertainty — corrected (uncorrected)
Assuming the internal calibration signal is used to
calibrate the reference level at –10 dBm and the input
attenuator is fixed at 10 dB, any changes in reference
level in the following ranges will contribute IF gain
uncertainty:
Reference level 20 to 30 °C 0 to 55 °C
0 to –55.9 dBm
10 Hz Res BW ±1.0 dB (±1.6 dB) (±2.0 dB)
≥ 30 Hz Res BW 0 dB (±0.6 dB) (± 1.0 dB)
–56.0 to –129.9 dBm
10 Hz Res BW (±2.0 dB)
5
(±2.5 dB)
≥ 30 Hz Res BW (±1.0 dB)
5
(±1.5 dB)
Each 10 dB decrease (or increase) in the amount of input
attenuation at the time of calibration and measurement
will cause a corresponding 10 dB decrease (or increase)
in the absolute reference level settings described above.
RF gain uncertainty (due to 2nd LO shift)
±0.1 dB corrected (±1.0 dB uncorrected).
Error correction accuracy (applicable when SHIFT W
and SHIFT X are used):
±0.4 dB.
Specifications
See definition of specifications and supplemental characteristics on page 16.