Campbell-scientific CSAT3 3-D Sonic Anemometer Uživatelský manuál stáhnout pdf (Strana 21)

CSAT3 Three Dimensional Sonic Anemometer

TABLE 5-8. FW05/FWC-L35 Fine

Wire Thermocouple

Description

Color

Signal High

Purple

Signal Low

Red

6. CSAT3 Outputs

The CSAT3 has three signal outputs: SDM, RS-232, and analog. Campbell

Scientific recommends that the SDM output be used whenever possible, followed

by RS-232, and finally analog. TABLE 6-1 summarizes the difference between

the three output options. In general SDM communications has the following

advantages: lowest CSAT3 current drain, best control and diagnostics, and

highest data resolution.

TABLE 6-1. CSAT3 Outputs

SDM

RS-232

Analog

Typical

Current Drain

@ 10 Hz

51 mA

@ 12 Vdc

89 mA

@ 12 Vdc

99 mA

@ 12 Vdc

External

Trigger

Source

yes

Output

Dynamic

Range

19 bit

12 bit

Diagnostics

Available

yes

6.1 SDM Output

SDM is a Campbell Scientific communication protocol used between a

Campbell Scientific datalogger and a smart sensor. TABLE 6-2 lists all the

Campbell Scientific dataloggers that support SDM communications, along with

the required datalogger OS/PROM and CSAT3 embedded code.

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 73 74

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