Campbell Scientific CR10X Measurement and Control System - Manual (Page 174)

SECTION 10. PROCESSING INSTRUCTIONS
10-16
*** 66 ARCTAN ***
FUNCTION
Calculate the angle in degrees whose tangent is
X/Y. The polarity of X and Y must be known to
determine the quadrant of the angle, as shown
here. If 0 is entered for Parameter 2, the
Arctangent of X is the result (limits of
ARCTAN(X) are -90
° < ARCTAN < 90°).
0
90
180
270
+x -x
+y
-y
0
+90
-90
x/y > 0
x/y < 0
FIGURE 10-1. Quadrant that the Angle Falls
in is Defined by the Sign of x and y.
PARAM. DATA
NUMBER TYPE DESCRIPTION
01: 4 Input location of X [X]
02: 4 Input location of Y [Y]
03: 4 Destination input
location for
ARCTAN(X/Y)
Input locations altered: 1
*** 67 DYNAGAGE SAP-FLOW ***
FUNCTION
This instruction is used in conjunction with a
Dynamax, Inc. Stem Flow Gage. It processes
four voltages measured by instruction 2. See
Appendix F for information on Instruction 67.
Input locations altered: 2 or 6
*** 68 EXTENDED PARAMETERS 4 DIGIT ***
FUNCTION
This instruction is used to give other instructions
additional parameters. Each of the eight
parameters in Instruction 68 is defined by the
instruction it follows. Refer to the specific
instruction that uses extended parameters.
Input location altered: 0