R&S®TS6300 ILS Test System

Mobile automatic test solution for ILS ground measurements

Specifications
of the R&S®EVS300

Frequency
 
Frequency range   70 MHz to 350 MHz
Preselection filter ranges marker beacon 74.7 MHz to 75.3 MHz
  ILS LLZ 108 MHz to 112 MHz
  ILS GS 320 MHz to 340 MHz
  VOR 108 MHz to 118 MHz
Frequency resolution   100 Hz
Temperature drift –10 °C to +55 °C 1 ppm
Aging per year after 30 days of uninterrupted operation 1 ppm
Level
 
Absolute level    
Maximum input power   +13 dBm
Display ranges 1) Low Noise mode (preamplifier ON) –120 dBm to –20 dBm
  Normal mode (preamplifier OFF) –110 dBm to –10 dBm
  Low Distortion mode
(RF attenuator ON)		 –100 dBm to +20 dBm
  Autorange mode –120 dBm to +20 dBm
Level resolution   0.1 dB
Accuracy at –30 dBm < 0.8 dB
Linearity error in range from –70 dBm to 0 dBm < 0.5 dB
Inherent noise Low Noise mode < –115 dBm
Spurious response, inherent without input signal, Low Noise mode < –90 dBm
Intermodulation    
Third-order intercept point (TOI) 2 × 10 dBm, Δf > 200 kHz,
Low Distortion mode		 > 20 dBm
ILS signal analysis
 
R&S®EVS300 in Single measurement mode. At an input level > –70 dBm, specifications apply even with a measurement time as short as 10 ms.
Input level range   –80 dBm to +10 dBm
Modulation depth (0 % to 95 %)    
Resolution   0.01 %
Accuracy 90 Hz/150 Hz ± 2.5% 2) ≤ 0.5 %
Accuracy voice/identifier ≤ 1.0 %
AF    
Accuracy 90 Hz/150 Hz ± 5% 2) ≤ 0.05 Hz
Accuracy 1020 Hz ± 50 Hz 2) ≤ 5.0 Hz
Phase angle 90 Hz/150 Hz    
Measurement range   0° to +120° or ± 60°
Resolution   0.1°
Accuracy   ≤ 0.2°
DDM measurement,
Localizer mode		    
Accuracy ≤ ±10 % DDM ≤ 0.04 % DDM ± 0.1 % of reading
Accuracy > ±10 % DDM ≤ 0.04 % DDM ± 0.2 % of reading
DDM measurement, Glide Slope mode    
Accuracy ≤ ±20 % DDM ≤ 0.08 % DDM ± 0.1 % of reading
Accuracy > ±20 % DDM ≤ 0.08 % DDM ± 0.2 % of reading

ILS demodulation filters (for DDM and SDM calculation)
 
Measurement modes Single CRS+CLR CRS CLR CRS|CLR
Δf1 Filter flatness (ripple < 0.1 dB) 12.4 kHz 32.0 kHz 12.4 kHz 12.4 kHz 12.4 kHz
Δf2 –3 dB bandwidth 14.8 kHz 34.9 kHz 14.8 kHz 14.8 kHz 14.8 kHz
Δf3 –60 dB stopband attenuation 18.8 kHz 39.1 kHz 18.8 kHz 18.8 kHz 18.8 kHz

1) Overload display if in-band or out-of-band signals are overloading.

2) Max. frequency drift of modulation signal.