Campbell Scientific CSAT3 CSAT3 3-D Sonic Anemometer - Page 17

TABLE 5-1., CSAT3 Power, TABLE 5-2., CSAT3 SDM Output to a, CR3000, CR5000, and CR9000X Datalogger,

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CSAT3 Three Dimensional Sonic Anemometer CAUTION The CSAT3 electronics box contains unique calibration information for its respective sensor head. Do not mismatch CSAT3 sensor heads and electronics. Doing so will result in erroneous wind and speed of sound measurements. NOTE Before extending the SDM signal cable, read Appendix D. NOTE Short haul modems, wire or fiber optic, may be used to lengthen the RS-232 communications cable. Short haul modems do not include an RTS signal. The CSAT3's RS-232 drivers can be asserted by a software setting in the CSAT3. This setting will always power the RS-232 drivers, independent of the RTS line. Spark gaps (model 6536 and 6361) may be required to protect against transients when using wire short haul modems. Spark gap protection is not needed with fiber optic short haul modems. TABLE 5-1. CSAT3 Power Battery Terminal Description Color Pin Positive 12 Vdc Red A Negative Power Reference Black B TABLE 5-2. CSAT3 SDM Output to a CR3000, CR5000, and CR9000X Datalogger Channel SDM-C1 SDM-C2 SDM-C3 G G Description SDM Data SDM Clock SDM Enable Digital Ground Shield Color Pin Green D White C Brown E Black F Clear nc TABLE 5-3. CSAT3 SDM Output to a CR1000, CR800/850, CR23X and CR10(X) Datalogger Channel C1 C2 C3 G G Description SDM Data SDM Clock SDM Enable Digital Ground Shield Color Pin Green D White C Brown E Black F Clear nc 9

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CSAT3 Three Dimensional Sonic Anemometer
The CSAT3 electronics box contains unique calibration
information for its respective sensor head.
Do not
mismatch CSAT3 sensor heads and electronics.
Doing
so will result in erroneous wind and speed of sound
measurements.
Before extending the SDM signal cable, read Appendix D.
Short haul modems, wire or fiber optic, may be used to lengthen
the RS-232 communications cable.
Short haul modems do not
include an RTS signal.
The CSAT3's RS-232 drivers can be
asserted by a software setting in the CSAT3.
This setting will
always power the RS-232 drivers, independent of the RTS line.
Spark gaps (model 6536 and 6361) may be required to protect
against transients when using wire short haul modems.
Spark gap
protection is not needed with fiber optic short haul modems.
TABLE 5-1.
CSAT3 Power
Battery
Terminal
Description
Color
Pin
Positive
12 Vdc
Red
A
Negative
Power Reference
Black
B
TABLE 5-2.
CSAT3 SDM Output to a
CR3000, CR5000, and CR9000X Datalogger
Channel
Description
Color
Pin
SDM-C1
SDM Data
Green
D
SDM-C2
SDM Clock
White
C
SDM-C3
SDM Enable
Brown
E
G
Digital Ground
Black
F
G
Shield
Clear
nc
TABLE 5-3.
CSAT3 SDM Output to a
CR1000, CR800/850, CR23X and CR10(X) Datalogger
Channel
Description
Color
Pin
C1
SDM Data
Green
D
C2
SDM Clock
White
C
C3
SDM Enable
Brown
E
G
Digital Ground
Black
F
G
Shield
Clear
nc
CAUTION
NOTE
NOTE
9