Technical description and operating manual ST 167 and ST167W5
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6.5 "SEARCH" OPERATION MODE
Entrance to the "SEARCH" mode by pressing the
button.
Scanning is finished.
. The status of the detected signal will be displayed regardless of its level, even if
it has fallen below the threshold level. This allows to directly search for the signal source.
Displaying more than
one and up to five signals. You can view them by
subsequent pressing on
, in order of decreasing “weighting factor”.
The accuracy of measurement of the frequency in this mode is higher as compared to the
"MANUAL" and when transferring information about the signal the frequency recalculate
will occur (See. Fig. 11 and 14).
Displaying the frequency at the first pass, there will be a delay of several seconds.
If detected signals at least five, on the place of the frequency signal is a dotted line
(Fig. 15).
Stored signals will not be updated automatically (scanning is stopped).
Updates occur only
when pressed again.
The buttons
and
help tune the signal frequency with increments of 5kHz.
By default, the demodulators are disabled. In this state, signal value is displayed,
which helps search for the location of the radiation source. Press the
button to select
a demodulator. First you will select the amplitude demodulator (AM), second -- the
frequency demodulator (FM). Once selected the demodulators, the indication level
corresponds to the last measured value and does not change until the state "Demodulation
OFF" is selected. This turns on the audio monitoring (the
icon changes to the icon
(fig. 16).
Adjust the volume by pressing and holding the
button for a few seconds before the indicator
starts flashing. Change the volume while the indicator is flashing by pressing the buttons
and
.
Finish the volume adjustment by pressing the
button or wait for a few seconds before the icon stops
flashing.
Finish the search and return to the "MANUAL" mode by pressing the
button.
6.6 "EVENT LOG" OPERATION MODE
In order to record information on the detected signal in the event log select
the submenu "Event log" and tick the box "Record" by pressing
. The symbol "---" in
Fig. 2 changes to the event counter "000" (Fig. 17).
Note that event recording only starts when the signal exceeds a preset threshold
for a time value not less than the one set in the submenu "Log.." > "Min.Duration.
"(red light denotes signal in the status bar).
Once signal level falls is below the threshold, recording of a new signal will be
possible only after a time period greater than the value set in the submenu "Event log" > "Event delay".
This delay is the time interval during which after the advent of a new signal any subsequent level changes
(signal disappearance and appearance) will be treated as one and the same signal. This feature helps prevent
the Event log from filling with undue information of one signal, e.g. due to short-time shielding of the source.
Fig.14
Fig.16
Fig.17
Fig.15
