Other display indications
As stated before, at power up an initialization procedure of about 1 minute takes place, during
which the equipment configures itself according to programming parameters stored in the SIM
card. The 7-segments display shows some default characters to indicate the advancement of
this process:
at the beginning, a line shifts on the display from bottom to top. Then an
A
character flashes
for about 30 - 40 seconds. Finally, a
C
character shows till the end of the initialization, when the
led bar will start to indicate the signal strength.
Additional messages on the display:
: An horizontal line shifting from bottom to top is displayed when sending an SMS message.
C
: The
C
character is displayed when executing the periodic autotest with SMS sending.
F
(flashing) : This character indicates PSTN line fault condition.
8
(blinking) : Indicates an incoming call through the GSM.
Trouble and Fault messages:
0
=
VECTOR Plus
is not able to turn on the GSM unit.
1
= Wrong or missing serial comunication between
VECTOR Plus
and GSM unit.
2
= Wrong PIN security code on the SIM card.
(correct value 0000)
3
= No GSM service available
4
= Poor signal level
5
= Battery problem
(only when using standard cell phone)
6
= Unknown general problem
Testing VECTOR Plus
In order to verify the efficiency and the signal quality of the GSM channel, we suggest the
following test: connect a normal telephone set to terminals Ac - Bc of the interface and close to
negative the terminal "GSM". Power up the unit and wait the initialization process is completed
(see display)
. Execute some telephone calls and evaluate the signal and audio quality of the GSM
connection.
Jumpers and trimmers
Jumper S1: closed
if using Siemens cell phones -
open
if using industrial GSM engine
Jumper S2: open
if using Siemens cell phones -
closed
if using industrial GSM engine
Jumper S3:
(OFF - TT)
closed
disables the tamper switch
RV5:
serves to adjust the GSM unit voltage - 3,85V for industrial GSM engine - 8,5V for
Siemens cel phones.
(WARNING: Avoid mounting the industrial GSM engine if voltage is adjusted for
Siemens cell phones, because it will cause permanent damage of the GSM module)
RV2:
adjusts the audio level of the signal received from the GSM unit.
RV3:
adjusts the audio level of the signal applied to the GSM unit for transmission.
(NOTE: RV2 and RV3 are factory adjusted to recommended values. Therefore additional adjustment
normally is not needed)
PB1:
Tamper switch connected to the TT terminals.
PB2:
Microprocessor reset switch.
5
Summary of Contents for VECTOR Plus
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