Technical description and operating manual ST 167 and ST167W5
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The Memory is organized in 30 banks with 999 events each. Bank number "1" always contains the newest
events, bank number "30" -- the oldest ones. If necessary, start recording a new bank by selecting this option in
the MENU. Bank record is produced be cycles: if overflown, new signals are recorded over the old ones.
Switch between the banks by presing the button
(BANK XX/YY, where XX is the number of the
bank being viewed, YY is the number of active banks). Bank number "1" is always the one with the latest
information.
The buttons
and
switch between numbers of events (Recording XX/YY, where XX is the
number of the event being viewed, YY is the number of events in the bank). The events are numbered in
accordance with the specified sorting criteria set via MENU). If you select the sorting options, other than sorting
by time, the following message may appear: "Please wait while sorting..."
Exit the event viewer by presing the
button.
This information is recorded in non-volatile memory of the unit and does not disappear after shutdown.
View the detected signals by selecting the "View" item in the "Log.." menu. If
the event log has no events, you will see the following: "PROTOCOL IS EMPTY."
Otherwise, the information on the detected signal is displayed on the screen such as
shown in the Fig. 18.
6.7 «SMS/GPRS» OPERATION MODE
This mode is intended for short SMS messages and short messages in GPRS protocol, which are mostly
used in vehicles tracking devices (trackers).
Entrance to this mode by choosing the line «SMS/GPRS" in the MENU.
To avoid missing messages in this mode, the simultaneous processing of data
coming in three possible channels of transmission of SMS: 2G (GSM900 and GSM1800)
and 3G is provided.
For that, in this mode, the processing time is minimized. The keypad is locked
except the button exit -.
Updating the screen information is reduced to about once
every 8 sec.
To reduce false alarms processing data in each channel carried out through 15 seconds
after the last detection.
If there is no signal screen view is shown in Fig. 19.
If a signal is detected on the screen will display the level and time of existence - a
three-digit number to the right of the screen (Figure 20). 15 seconds interval is starting from
this moment. If in this interval there will be more than one signal (duration of the signal
doesn’t matter in this case), then they will not be identified as SMS/GPRS message. It is
made for a reason, that, for example, during the conversation radio transmission is made
synchronously with audio signal in
a phone audiotrack. Pauses in conversation can give misrepresentation of several SMS
messages during this interval.
Fig.19
Fig.20
Fig.18
