Campbell Scientific CSAT3 3-D Sonic Anemometer - Manual (Page 54)

CSAT3 Three Dimensional Sonic Anemometer
deasserted, e.g. RS-232 communicates have terminated. The baud rate cannot
be changed if RI=1 (always power the RS-232 drivers). Check the setting of
RI in the Long Status Message.
“ri n” – Toggle Rts Independent; where n = 0 means power the RS-232 drivers
if RTS is asserted and n = 1 means always power the RS-232 drivers. Always
powering the RS-232 drivers allows the use of short haul modems between the
CSAT3 and PC.
“sr2718” – Save RAM contents, with modified calibration parameters, to non-
volatile EEPROM. The command is ignored if the hardware jumper is set in
normal operate mode (center and right pins). To change the hardware jumper
between normal operate and save to EEPROM mode, follow the steps below.
Remove all external connectors from the CSAT3 electronics box. Place the
electronics box on a workbench in front of you. Orient the electronics box
such that the connectors point towards your body and the silk screening, on the
CSAT3 electronics box lid, is pointing towards the ceiling. These instructions
reference the location of various components as top, bottom, left, and right.
The Campbell Scientific logo is in the top left corner of the electronics box lid.
Loosen the four electronics box cover retaining screws with the large Phillips
screw driver. Remove the electronics box cover to gain access to the printed
circuit board.
Locate the CSAT3 processor’s surface-mount socket on the CPU Board. The
processor is a large chip located near the center of the printed circuit board.
The label on the processor will have the Campbell Scientific logo on it as well
as the embedded code version number.
Locate the row of three pins above and a little to the left of the processor.
These pins run from left to right and there is a movable jumper connecting the
center pin and the right pin. Note, be sure to return the jumper to the normal
operating position, center and right pins.
When the jumper is on the center and right pins, the CSAT3 is in the normal
operate mode. When the jumper is on the left and center pins, the CSAT3 is in
the save to EEPROM mode.
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