or is not defined."> VXI VT1422A, VT1529A/B , ,
238 VT1422A Command Reference Chapter 7
ALGorithm
Parameters

Comments •To send values to a Global array, set the <alg_name> parameter to "GLOBALS."

To define a global array see the ALGorithm:DEFine command.
•An error is generated if <alg_name> or <array_name> is not defined.
•When an array is defined (in an algorithm or in 'GLOBALS'), the VT1422A
allocates twice the memory required to store the array. When the ALG:ARRAY
command is sent, the new values for the array are loaded into the second space
for this array. When the ALG:UPDATE or ALG:UPDATE:CHANNEL
commands are sent, the VT1422A switches a pointer to the space containing the
new array values. This is how even large arrays can be "updated" as if they were
a single update request. If the array is again updated, the new values are loaded
into the original space and the pointer is again switched.
•When this command is sent textually to an Agilent/HP E1406A command
module, the Definite Length Arbitrary Block <array_block> parameter must
always use "Big Endian" (Motorola) byte ordering for the packed 64-bit float
values.
•The <alg_name> paragraph is not case sensitive. However, <array_name> is
case sensitive.
•Related Commands: ALG:DEFINE, ALG:ARRAY?
•*RST Condition: No algorithms or variables are defined.
•Use VXIplug&play function: hpe1422_algArray(...)
Usage send array values to my_array in ALG4
ALG:ARR 'ALG4','my_array',<block_array_data>
send array values to the global array glob_array
ALG:ARR 'GLOBALS','glob_array',<block_array_data>
ALG:UPD force update of variables
Parameter
Name Parameter
Type Range of
Values Default
Units
alg_name string ALG1 - ALG32 | GLOBALS none
array_name string valid 'C' variable name none
array_block block data block of IEEE-754 64-bit floating point
numbers none