Campbell CSAT3 Sonic

See the CSAT3 Three Dimensional Sonic Anemometer Instruction Manual, Revision 3/98, Campbell Scientific, Inc. Appendix B discusses RS232 serial communications.

Cabling

An adaptor must be built which makes the following connections from the CSAT3 RS232 and power cables into a 9 pin Amp connector on an ASTER serial breakout box.
     
    CSAT3 Serial Connections
    CSAT3 DB9 Connector 9 pin Amp Connector Notes
    2 Tx (output from CSAT3) 1 Rx (input to adam)  
    3 Rx (input to CSAT3) 2 Tx (output from adam)  
    5 Ground 4 Gnd  
    7 RTS (input to CSAT3) 3 DTR (output from adam) not required if RI=1
    see below
    8 CTS (output from CSAT3) not connected  
    CSAT3 Power Connections
    CSAT3 Power Cable 9 pin Amp Connector Notes
    Black Ground 7 Gnd  
    Red +12 DC 8 +12  
    Silver 6 Shield  

ADAM Serial Interface Jumpers

S1 jumpers (signals from interface to Ironics)

Row B is connected to Ironics, row A to RS232 interface, C to RS422 interface. 
  The following jumpers must be installed from A to B
  Pin 1  (RX input to Ironics)
  Pin 2  (TX output from Ironics)

  The following do not need to be connected
  Pin 3  (CTS input to Ironics)
  Pin 4  (RTS output from Ironics)
  Pin 5  (DCD input to Ironics)
  Pin 6  (DTR output from Ironics)

S2 jumpers (signals from serial interface to sensor)

Row B is connected to sensor port, row A to RS232 interface, C to RS422 interface. 
  The following jumpers must be installed from A to B
  Pin 2  (GND)
  Pin 3  (RX input to Ironics)
  Pin 8  (TX output from Ironics)

  The following is required if sonic parameter RI=0
  Pin 1  (DTR output from Ironics) and W4 jumper installed

  The following do not need to be connected
  Pin 4  (RTS output from adam)
  Pin 5  
  Pin 6  (DCD input to adam)
  Pin 7  (CTS input to adam)
Note that if sonic parameter RI=0, then pin 1 of S2 must be jumpered from row A to B, and W4 jumper must be installed.

CSAT3 Configuration

A CSAT3 sonic must be configured to operate in unprompted mode, with the sync bytes option turned on.
The sonic software must be at least EPROM version 3.0a, I believe.

To temporarily configure the CSAT3, do the following (to make the changes permanent, see below):

  1. Connect CSAT3 to ADAM break out box.
  2. On base system, do "rserial -A adam port" where adam is name of adam, and port is the serial port number (200-215)
  3. If jibberish data is spewing, type "&" to turn off unprompted mode.
  4. Type "T" to put sonic in terminal mode.
  5. Type "rs 1" to enable sync bytes.
  6. Type "ri 1" to disable RTS monitoring
  7. Type "Ac" to configure for 20Hz output (or see Execution Parameter Table, below, for other rates)
  8. Type "??" to view configuration. You should see "RS=1" and "RI=1", as the 16th and 18th parameters.
  9. Type "D" to return to data mode.
  10. Type "&" to turn on unprompted mode.
  11. Type "ctrl-D" to exit rserial
  12. Reenter rserial without -A option:  "rserial adam port"
Reasonable looking hex data should be displayed.  The first two fields should be 55 AA hexadecimal.  Do "ctrl-D" to exit rserial.

This configuration will be lost after powering down the sonic. You must move a jumper, and enter a top-secret password to save the values in non-volatile memory, as follows:

  1. Remove power from CSAT3
  2. Remove 4 screws and open CSAT3 electronics box
  3. With the external connectors facing you, locate the jumper labeled P12H above and to the left of the EPROM near the gray strip.
  4. Move the jumber from the right two pins to the left two pins
  5. Restore power to CSAT3
  6.  Run "rserial -A adam port" on the base system.
  7. Type "rs 1" to enable sync bytes.
  8. Type "ri 1" to disable RTS monitoring
  9. Type "??" to view settings. You should see "RS=1" and "RI=1", as the 16th and 18th parameters.
  10. Type "sr2718" to store values in non-volatile memory.
  11. Remove power
  12. Switch jumper back to right 2 pins.
  13. Restore power.
  14. Look at output with rserial again.  If necessary, enter "D" to enter data mode and "&" to enable unprompted mode.

    15.  

CSAT3 Configuration Display

Type "T" and "??" to view the configuration settings. Here is an example, showing RS=1 and RI=1. 
ET= 20 ts=i XD=d GN=222a TK=1 P=5 FK=0 RN=1 IT=1 DR=102 rx=2 fx=038
BX=0 AH=1 AT=0 RS=1 BR=0 RI=1 GO=00000 HA=0 6X=3 3X=2
PD=2 SD=0 ?d sa=1
WM=o ar=0 ZZ=0 DC=4 ELo=016 016 017 ELb=017 017 017 TNo=accd TNb=bcd JD= 005
C0o=-2-2-2 C0b=-2-2-2 RC=0 tlo=8 8 9 tlb=9 9 9 DTR=01740 CA=1 TD= duty=047
AQ= 20 AC=1 CD=0 SR=1 X=0 MX=0 DT=02320 DTC=01160 RD=o ss=1 XP=2 RF=018 DS=007
SN0261 30jul98 HF=005 JC=3 CB=3 MD=5 DF=05000 RNA=1 rev 3.0a cs=39302 &=0 os=


Sample Rate

Enter the "An" command to select a sampling rate and output rate. This
value is automatically saved in non-volatile memory.





An Command
Sampling Rate (Hz)
Output Rate (Hz)
Power, with serializer (Watt)





A2
1 
1
1.3





A5
2 
2
1.3





A6
3
3
1.6





A7
5
5
1.6





A8
6
6
1.7





A9
10
10
1.7





Aa
12
12
1.8





Ab
15
15
1.9





Ac
20
20
2.2





Ad
30
30
3.0





Ae
60
60
3.0





Ag
60 
10 (6:1 oversampling)
3.0





Ah
60 
20 (3:1 oversampling)
3.0