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Display and Control Elements
INSYS GSM 4.3
7.1
Meaning of the Displays
Description
Display
Meaning
Power LED
LED on
Supply voltage available
LED off
No supply voltage
Status LED
LED on
INSYS GSM 4.3 is logged
in into the cellular network
LED flashes
Data connection estab-
lished
LED flashes quickly
Initialization, SMS dis-
patch, alarm processing
LED off
INSYS GSM 4.3 is not
logged in into the cellular
network
Connect LED /
DCD LED (INSYS GSM 4.3
compact)
LED on
Connection to remote ter-
minal is established
LED off
No connection to remote
terminal
RX/TX LED
LED on
INSYS GSM 4.3 transmits
data via the serial interface
LED off
No data is transmitted via
the serial interface
Signal LED
LED on
GSM reception perfect
LED flashes
Flashing frequency indi-
cates the quality of the
GSM reception (refer to
Table 5).
LED off
No GSM reception
Table 4: Meaning of the LED displays
Flashing Rate LED Sig-
nal
Value
Signal Quality
Always on
25 .. 31
Optimum
16.7 Hz (very quick)
23 .. 24
Very good
7.1 Hz
21 .. 22
3.8 Hz
19 .. 20
Good
2.6 Hz (slow)
17 .. 18
Poor
off
<17 or 99 (not detectable) Insufficient
Table 5: Flashing code of the Signal LED
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