Startup & Shutdown; Front Panel & Firmware; Sd Card Menu - BRECHTEL mini-OPC 9405 Instrument Manual

7.2 Startup & Shutdown
7.2 Startup & Shutdown
Start the mini-OPC by applying 12V power to the mainboard. Monitor the flow rates and
other operating parameters.
To confirm the unit is leak free, install a HEPA filter on the inlet and confirm zero particle
count readings from the unit while sampling from the filter. Remove the filter for normal
operation.
Shutdown the mini-OPC by turning File Save to 'Off' in the UAV Reader software (if in
use) and then removing 12V power from the unit. Be sure to practice good electrostatic
discharge procedures if the mini-OPC will be moved.
7.3 Front Panel & Firmware
Although it is possible to run the mini-OPC without the mini front panel, using the mini
front panel makes operating the mini-OPC much easier. The mini front panel has a four
line character display with a data knob for user input. As well as turning, the data knob
can be pressed. A short press will move the onscreen cursor and change the item that the
data knob adjusts. A long press will take users from "READINGS" mode to "DEFAULT
SETTINGS" mode and back again. Settings are saved when going from "DEFAULT SET-
TINGS" mode back to "READINGS" mode. The sections below discuss the details of each
menu in the mini-OPC firmware.

SD Card Menu

Rotate the data knob to select the SD Card menu. The menu will display the following
lines:
SD Save: (Off/On)
File: (Current Filename)
Files: (Total number of files on SD Card)
Size: (SD Card size in megabytes)
Used: (% of the SD Card currently filled)
The only user-settable item in this menu is 'SD Save', all other items are set by the mini-
OPC automatically. A quick push of the data knob will select the SD Save value, rotate the
knob to change the value.
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