Invisible systems QC0153, Operational Manual

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Invisible Systems Limited P a g e | 18
7 ‐ 9 Beetham Road, Milnthorpe Cumbria, LA7 7QL, Phone: 01539 722 520
Email: info@invisible ‐ systems.com
QC0153 GSM Signal Analyser
14. Jamming Detection
M O N I T O R
< <
> > J A M M I N G
T - M o b i l e U K
G S M 1 8 0 0
S I G : 6 0 %
C E L L : 4 5 7 2 3 B A T : 1 0 0 %
S I M : N o t F i t t e d
If a jamming signal is present of sufficient strength to block communication to the GSM
base stations, the signal analyser will indicate this in the Monitor function with a flashing
>>JAMMING<< message.
The signal strength indicator on the right hand side of the display will indicate the strength of the
jamming signal.
By moving the meter around and checking the signal strength, it may be possible to locate
the source of the jamming signal.
15.
Screen Saver
It reduces battery usage to a minimum.
Moving Logo
Press any button to return to the previous screen.
16.
Power ‐ Up Functions
By holding down the different keys, several functions are available to the user:
- Holding down the UP key = load defaults, clear all survey results, clear network
list
- Holding down the RIGHT key = delete saved SIM PIN
- Holding down the LEFT key = display the logo for 30 seconds
- Holding down the DOWN key = clear network list