Optoelectronics Scout User Manual page 19

Front Panel Controls
CAPTURE
The CAPTURE switch, in conjunction with the FILTER switch, is used to select the operating mode of
the Scout as described above. When the FILTER and CAPTURE switches are both in the ON position
then CAPTURE mode is selected. The CAPTURE switch also has two alternative functions. When the
Scout is turned on with the CAPTURE switch in the ON position the beeper is enabled. Turning the
Scout on with the CAPTURE switch in the OFF position disables the beeper.
GATE/RECALL/CLEAR
The GATE/RECALL/CLEAR push-button switch has three main functions. When the Scout is in NOR-
MAL mode or FILTER mode, the push-button switch changes the gate time, and hence the measure-
ment resolution. The Scout has four gate settings. Each time the push-button switch is pressed, the next
gate setting is selected. 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 corre-
sponding to each gate setting are summarized in Table 1.
When the Scout is in CAPTURE mode, the 1 KHz resolution gate setting is automatically selected.
When the Scout is in RECALL mode, the push-button switch changes the frequency memory location
displayed on the front panel display. The Scout can store up to 400 frequencies along with the number
of occurrences of each frequency. Each time the push-button switch is pressed, the next memory loca-
tion frequency or count is displayed. When the Scout is in RECALL mode the 1KHz resolution gate
setting is automatically selected.
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