Optoelectronics Scout User Manual page 25

Operation
POWER-UP
When the Scout is turned on a display self-test is performed. The self-test consists of illuminating all
front panel display segments and annunciators for approximately two seconds, followed by displaying
Scout for another two seconds, and then the communications language enabled for two seconds. The
Scout begins operation in the operating mode selected by the FILTER and CAPTURE switches. If the
CAPTURE switch is in the ON position at power-up, the beeper is enabled and the beeper annunciator
is displayed.
NORMAL MODE
NORMAL mode is selected by placing both the FILTER and CAPTURE switches in the OFF position.
In this mode the Scout functions as a conventional free-running frequency counter.
In NORMAL mode, frequency measurements are taken continuously. As each measurement is com-
pleted, the LED indicator flashes and the result is displayed as long as there is an RF signal present. The
moment a signal is no longer present a new measurement is started. The gate setting can be changed by
pressing the GATE/RECALL/CLEAR push-button switch on the front panel. Changing the gate setting
changes the gate time, and hence the measurement resolution, of the frequency counter. The Scout has
four gate settings. The currently selected gate setting is indicated by the position of the decimal point
on the frequency display. The gate time, measurement time, and measurement resolution correspond-
ing to each gate setting are summarized in Table 1 on page 8.
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