Real Time Spectrum Analyzer Statement of Requirements_F1STAB4214A002.pdf

Real Time Spectrum Analyzer Requirements

USSF/USAF Space Test Course and Test Pilot School in an effort to modernize relevant curriculum in the electronic warfare domain requires a Real Time Spectrum Analyzer to provide system level training and evaluation of new technological advancements in threat analysis. STC/TPS requires the procurement of a Real Time Spectrum Analyzer with the minimum requirements provided to support the analysis and characterization of evolving RF generated threats.

Specification Requirements

Frequency range DC-coupled 10 Hz to 40 GHz AC-coupled 10 MHz to 40 GHz Frequency resolution 0.01 Hz

Reference frequency, internal Accuracy ±((time since last adjustment × aging rate) + temperature drift + calibration accuracy) Aging per year standard ±1 × 10–7 Temperature drift (+5 °C to +45 °C) standard ±1 × 10–8

Maximum initial calibration accuracy standard ±5 × 10–8

Signal and spectrum analyzer mode Frequency readout

Marker resolution 1 Hz Uncertainty ±(marker frequency × reference accuracy + 10 %

× resolution bandwidth + ½ (span/(sweep points –1)) + 1 Hz)

Frequency counter resolution signal and spectrum analyzer mode only

0.001 Hz

Count accuracy signal and spectrum analyzer mode only

±(frequency × reference accuracy + ½ (last digit))

Display range for frequency axis 0 Hz, 10 Hz to max. frequency Resolution 0.1 Hz Maximum span deviation ±0.1 %

Spectral purity SSB phase noise frequency = 500 MHz, carrier offset 100 Hz < –84 dBc (1 Hz) 1 kHz < –101 dBc (1 Hz) 10 kHz < –106 dBc (1 Hz) 100 kHz < –115 dBc (1 Hz) 1 MHz < –134 dBc (1 Hz) 10 MHz < –150 dBc (1 Hz) (nom.)

Residual FM frequency = 500 MHz, RBW: 1 kHz, sweep time:

100 ms

< 3 Hz (nom.)

Sweep time Range span = 0 Hz 1 μs to 16 000 s span ≥ 10 Hz, swept 1 ms to 16 000 s 1 span ≥ 10 Hz, FFT 7 μs to 16 000 s 2

Sweep time accuracy span = 0 Hz ±0.1 % (nom.)

span ≥ 10 Hz, swept ±3 % (nom.)

Sweep filters and FFT filters Resolution bandwidths (–3 dB) span ≥ 10 Hz, sweep filters 1 Hz to 10 MHz in 1/2/3/5 sequence span ≥ 10 Hz, FFT filters 1 Hz to 300 kHz in 1/2/3/5 sequence span = 0 Hz 20 MHz, 28 MHz, 40 MHz 3 additionally Bandwidth uncertainty < 3 % (nom.)

Shape factor 60 dB:3 dB < 5 (nom.)

Channel filters Bandwidths (–3 dB) standard

(RRC = root raised cosine) 100 Hz, 200 Hz, 300 Hz, 500 Hz

1/1.5/2/2.4/2.7/3/3.4/4/4.5/5/6/8.5/9/10/ 12.5/14/15/16/18 (RRC)/20/21/24.3 (RRC)/ 25/30/50/100/150/192/200/300/500 kHz 1/1.228/1.28 (RRC)/1.5/2/3/3.84 (RRC)/ 4.096 (RRC)/5/10/20/28/40 MHz 3 Bandwidth accuracy < 2 % (nom.)

Shape factor 60 dB:3 dB < 2 (nom.)

Video bandwidths 1 Hz to 10 MHz in 1/2/3/5 sequence, 20 MHz, 28 MHz, 40 MHz

Signal analysis bandwidth 40 MHz (nom.) 3

Display range displayed noise floor up to +30 dBm

Maximum input level DC voltage AC coupled 50 V DC coupled 0 V CW RF power 0 dB RF attenuation RF preamplifier: off 20 dBm (= 0.1 W) with R&S®FSV-B22 or R&S®FSV-B24 option, RF preamplifier: on

13 dBm (= 0.02 W)

RF attenuation ≥ 10 dB RF preamplifier: off 30 dBm (= 1 W) with option, RF preamplifier: on 23 dBm (= 0.2 W) Pulse spectral density 0 dB RF attenuation, RF preamplifier: off 97 dB μV/MHz

Maximum pulse voltage RF attenuation ≥ 10 dB 150 V Maximum pulse energy RF attenuation ≥ 10 dB, 10 μs 1 mWs

Intermodulation 1 dB compression of input mixer 0 dB RF attenuation, RF preamplifier: off f ≤ 7 GHz +3 dBm (nom.)

f > 7 GHz +5 dBm (nom.)

with option, RF preamplifier: on, 0 dB RF attenuation f ≤ 7 GHz –12 dBm (nom.)

f > 7 GHz –25 dBm (nom.)

Third order intercept point (TOI) 0 dB RF attenuation, level: 2 × –15 dBm, Δf > 5 × RBW or 10 kHz, whichever is larger, RF preamplifier: off

10 MHz ≤ fin < 100 MHz > 12 dBm, 15 dBm (typ.)

100 MHz ≤ fin < 3.6 GHz > 13 dBm, 16 dBm (typ.)

3.6 GHz ≤ fin ≤ 40 GHz > 15 dBm, 18 dBm (typ.)

10 MHz ≤ fin < 100 MHz –3 dBm (nom.)

100 MHz ≤ fin < 3.6 GHz –2 dBm (nom.)

3.6 GHz ≤ fin ≤ 7 GHz 0 dBm (nom.)

7 GHz ≤ fin ≤ 40 GHz –10 dBm (nom.)

Second harmonic intercept (SHI) 0 dB RF attenuation, level: –10 dBm, RF preamplifier: off 100 MHz < fin ≤ 3.5 GHz 45 dBm (nom.)

3.5 GHz < fin ≤ 20 GHz 75 dBm (nom.)

Real Time Spectrum Analyzer Mode

Span Range 100 Hz to 40 MHz Resolution 1 Hz

Frequency readout Number of sweep (trace) points 801 Marker resolution 0.01 Hz Uncertainty ±(marker frequency × reference uncertainty +

10 % × resolution bandwidth + ½ (span / (sweep points –1)) + 1 Hz)

Marker tuning frequency step size span/800

Sweep time Range real-time spectrum, real-time spectrogram, free run or stop on trigger

52 μs to 1 s 7 auto rearm trigger 4 μs to 1 s Resolution 4 μs

Data acquisition A/D converter Sampling rate 128 Msample/s Resolution 16 bit FFT length 1024 FFT window Blackman Harris, Flattop, Gaussian, rectangular, Hanning, Kaiser FFT overlap factor 80 % Spectrum (FFT) processing rate span: 40 MHz 250 000/s

Minimum detectable signal duration span: 40 MHz, SNR > 60 dB 25 ns (nom.)

Resolution bandwidth (–3 dB) Range 1 Hz to 400 kHz, fixed span/RBW ratio, dependent on selected FFT window Span/RBW ratio selected FFT window Blackman Harris (default) 200 Flattop 100 Gaussian 200 rectangular 400 Hanning 250

Kaiser 200 Bandwidth uncertainty < 3 % (nom.)

Level

Amplitude flatness (1.25 × signal analysis bandwidth) ≤ fcenter ≤ 7 GHz

±0.8 dB (nom.)

f > 7 GHz ±1 dB (nom.)

Spurious free dynamic range span: 40 MHz < –70 dBc (nom.)

Minimum signal duration necessary for specified level measurement uncertainty 8 trace detector: max.

peak, span = nominal values

40 MHz 24 μs 20 MHz 45 μs 10 MHz 86 μs 5 MHz 168 μs 2 MHz 414 μs 1 MHz 824 μs 500 kHz 1.7 ms 200 kHz 4.1 ms 100 kHz 8.2 ms 50 kHz 16.4 ms 20 kHz 41 ms 10 kHz 82 ms 5 kHz 164 ms 2 kHz 410 ms 1 kHz 820 ms 500 Hz 1.64 s 200 Hz 4.1 s 100 Hz 8.2 s

Trigger

Trigger source free run, frequency mask, time domain trigger, external

Frequency mask trigger Trigger level resolution 0.5 dB Minimum necessary mask distance to noise floor 30 dB (nom.)

Dynamic range frequency mask – reference level

0 dB to –80 dB (nom.)

Trigger level accuracy frequency mask > reference level – 50 dB

±(frequency response + 1.0 dB) (nom.)

frequency mask > reference level – 70 dB ±(frequency response + 2.5 dB) (nom.)

Trigger uncertainty span = 40 MHz ±12 μs (nom.)

Trigger conditions enter mask area, leave mask area Trigger modes auto rearm trigger, stop on trigger Trigger mask Mask length 3 to 801 frequency points Mask frequency resolution span/800 Mask shape generation manual, auto set (mask derived from the measured spectrum) Minimum signal duration for 100 % probability of trigger (nominal values) 13 see minimum signal duration necessary for specified level measurement uncertainty

Trigger out Connector BNC female Output TTL-compatible, 0 V/5 V (nom.)

Inputs and Outputs

RF input Impedance 50 Ω Connector 2.92 mm (K)/N female test port adapter N female

VSWR RF attenuation ≥ 10 dB 10 MHz ≤ f < 3.6 GHz < 1.5, 1.3 (typ.)

3.6 GHz ≤ f < 20 GHz < 2, 1.8 (typ.)

20 GHz ≤ f < 27 GHz < 2.2, 2 (typ.)

27 GHz ≤ f < 30 GHz DC coupled < 2.2, 2 (typ.)

AC coupled 2.5 (meas.)

30 GHz ≤ f ≤ 40 GHz DC coupled < 2.5, 2.2 (typ.)

AC coupled 3 (meas.)

RF attenuation < 10 dB, DC coupled 10 MHz ≤ f < 7 GHz 2 (meas.)

7 GHz ≤ f < 30 GHz 2.5 (meas.)

30 GHz ≤ f ≤ 40 GHz 3 (meas.)

Setting range of attenuator 0 dB to 75 dB, in 1 dB steps f > 7 GHz 30 dB (nom.)

Probe power supply Supply voltages +15 V DC, –12.6 V DC and ground, max. 150 mA

(nom.)

Noise source drive

Output voltage 0 V/28 V, max. 100 mA, switchable (nom.)

Power sensor Connector 6-pin LEMOSA female

USB interface 2 ports, type A plug, version 2.0

Reference output

Impedance 50 Ω (nom.)

Output frequency internal reference 10 MHz external reference same as reference input signal Level > 0 dBm (nom.)

Reference input

Impedance 50 Ω (nom.)

Input frequency range 1 MHz ≤ fin ≤ 20 MHz, in 100 kHz steps Required level > 0 dBm into 50 Ω (nom.)

External trigger/gate input

Trigger voltage 0.5 V to 3.5 V (nom.)

Input impedance 10 kΩ (nom.)

IEC/IEEE bus control interface in line with IEC 625-2 (IEEE 488.2) Command set SCPI 1997.0 Connector 24-pin Amphenol female Interface functions SH1, AH1, T6, L4, SR1, RL1, PP1, DC1, DT1, C0

LAN interface 10/100/1000BASE-T Connector RJ-45