77
level, can be of low amplitude, while their far-field value (when conducted out and radiated), could be
up to 100,000 times as large
(for further details refer to the Common Mode section in the Applications
Report)
.
7. What are the Minimum System Requirements?
•
CPU 333 MHz or faster
•
128 MB RAM, 256 MB recommended for EHX and EHX+, and 8 GB recommended for ERX+
•
8 MB Video or more
•
Windows XP/Vista/Windows 7/8/8.1 OS
•
10/100 Network Card
8. What is the maximum power level that EMSCAN’s patented scanner can receive
without being damaged?
The surface of the scanner can handle thousands of volts. The scanner is rated for a radiated load of
10 W or 40 dB. If a transmission line carrying RF power of more that 10 W / 40 dBm is placed close
to the scanner probe for extended periods, it is likely to damage the scanner.
9. How sensitive is EMSCAN’s patented scanner?
EMX sensitivity: -135 dBm to 35 dBm (Dependant on spectrum analyzer performance)
(* 30 dB LNA)
EHX sensitivity: -130 dBm to 35 dBm (Dependant on spectrum analyzer performance)
(* 40 dB LNA; ** 38 dB Power amplifier (Please refer to
Technical Bulletin #15
for the test setup))
10.
I added a low noise amplifier (or an attenuator) between the EHX scanner and the
spectrum analyzer and forgot to enter the value in the Amplitude Adjustment menu.
Can I correct this without rescanning?
If you forget to set the amplitude adjustment, you can re-enter the Amplitude Adjustment area and
modify the processed scans without rescanning.
EMxpert Software
Appendix - FAQ
Frequency (MHz)
Sensitivity
Sensitivity with 40 dB LNA
-20
-3
0.05
-60
-50
-135
-100
-120
-108
-135
-107
-115
-100
-115
-95
-105
-85
-100
-85
-90
-80
1
300
696
1500
2000
2600
3000
3500
4000
Frequency (MHz)
Sensitivity
Sensitivity with 40 dB LNA
-10
0
0.15
-25
-15
0.5
-45
-25
1
-90
-68
300
-95
-75
696
-100
-79
1500
-100
-83
2000
-130
-85
2600
-95
-85
3000
-100
-86
3500
Frequency (MHz)
Sensitivity
Sensitivity with 38 dB Power Amp.
-91
-78
4000
-85
-68
4500
-90
-70
5000
-88
-75
5500
-85
-70
6000
-90
-65
6500
-85
-70
7000
-70
-60
7500
-63
-60
8000