TECHNICAL DESCRIPTION AND OPERATING MANUAL ST131 <PIRANHA II> and ST131N
36
3.11 "DIGIT" OPTION
Option is intended to detect and analyze signals related to the standard wireless and cellular data
transfer.
Figure 37 shows the position of these standards on the
spectrogram in the FULL RANGE mode.
Access to this option is realized in the “RADIO 30-4400
MHz” channel by pressing
.
Indication of level of the signal terminals and base stations
is determined by following criteria:
• Using the optimal detector type for the particular data
transfer standard.
• Signal frequency is corresponded to the frequency range
of terminal devices or base stations of the standard.
• Time parameters of the detected signal are corresponded to the standard (only for GSM 900/1800
and DECT).
Figure 38 shows the screen if the “DIGIT” option is selected.
1.
Graphic representation of the average signal level
within the frequency band specified by given
standard.
2.
Threshold level of graphic indicator.
3.
Digital data transfer standards.*
4.
Averaged level of detected signal (dBm). Absence
of indication (---) of means no signal with a level
a sufficient to identify it.
*
2.4 GHz - ISM frequency range - 2400-2485 MHz (WLAN, BLUETOOTH and other signal)
CONTEXT BUTTON FUNCTIONS ______________________________________________
– Selection of measurement level of base stations.
– Selection of serial automatic scanning of all standards (when is highlighted in red light).
- Selection of the dynamic range of graphic display of signal level (20, 40 or 70 dB)
- Selection of simultaneous display only for GSM and 3G. When you select a button is
highlighted in red.
- setting the threshold level of graphic indicator relative to the current signal level (maximum
sensitivity in case no signal).
AUXILIARY CONTEXT BUTTON FUNCTIONS _____________________________________
- On/off identification of signals on the time parameters. ON position is default and highlighted
in red. Applicable only for the GSM 900/1800 and DECT.
_______________________________________________________________________
Figure 38
Figure 37
