Campbell CR7, Инструкция по эксплуатации

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APPENDIX A. GLOSSARY
A-2
INTERMEDIATE STORAGE: That portion of
memory allocated for storing the results of
intermediate calculations necessary for
operations such as averages or standard
deviations. Intermediate storage is not
accessible to the user.
LOW RESOLUTION: This is the default output
resolution. A low resolution data value has
4 significant decimal digits and may range
in magnitude from ±0.001 to ±6999. A low
resolution data value requires 1 Final
Storage location (2 bytes).
OUTPUT ARRAY: A string of data points
output to Final Storage. Output occurs only
when the output flag is set. The first point
of an Output Array is the Output Array ID,
which gives the table and the Instruction
Location Number of the Instruction which
set the Output Flag. The data points which
complete the Array are the result of the
Output Processing Instructions which are
executed while the Output Flag is set. The
Array ends when the Output Flag is reset at
the end of the table or when another
Instruction acts upon the Output Flag.
Output occurs only when the output flag is
set.
OUTPUT INTERVAL: The time interval
between initiation of a particular Output
Array. Output occurs only when the output
flag is set. The flag may be set at fixed
intervals or in response to certain
conditions.
OUTPUT PROCESSING INSTRUCTIONS:
These Instructions process data values and
generate Output Arrays. Examples of
Output Processing Instructions include
Totalize, Maximize, Minimize, Average, etc.
The data sources for these Instructions are
values in Input Storage. The results of
intermediate calculations are stored in
Intermediate Storage. The ultimate
destination of data generated by Output
Processing Instructions is Final Storage.
The transfer of processed summaries to
Final Storage takes place when the Output
Flag is set by a Program Control Instruction.
PARAMETER: When used in conjunction with
CR7 instructions, parameters are numbers
or codes which are entered when
programming the CR7 to specify exactly
what the instruction is to do. Once the
instruction number has been entered in a
Program Table, the CR7 will prompt for the
parameters by displaying the parameter
number in the ID Field of the display.
PROCESSING INSTRUCTIONS: These
Instructions allow the user to further
process input data values and return the
result to Input Storage where it can be
accessed for output processing.
Arithmetic and transcendental functions are
included in these Instructions.
PROGRAM CONTROL INSTRUCTIONS:
These Instructions are used to modify the
sequence of execution of Instructions
contained in Program Tables, and to set or
clear flags.
PROGRAM TABLE: That portion of memory
allocated for storing programs consisting of
a sequence of user instructions which
control data acquisition and processing.
Programming can be separated into 2
tables, each having its own user entered
Execution Interval. A third table is available
for programming subroutines which may be
called by instructions in Tables 1 or 2. The
*1 and *2 Modes are used to access Tables
1 and 2. The *3 Mode is used to access
Subroutine Table 3. The length of the
tables are constrained only by the total
memory available for programming.
SAMPLE RATE: The rate at which
measurements are made by the I/O
Module. The measurement sample rate is
primarily of interest when considering the
effect of time skew (i.e., how close in time
are a series of measurements). The
maximum sample rates are the rates at
which the measurements are made when
initiated by a single instruction with multiple
repetitions. When the I/O Module is told to
make several repetitions of a measurement
it will make those measurements as fast as
possible and buffer the data for use by the
Control Module. In normal operation the
Control Module will complete all processing
called for by the Input Instruction before
instructing the I/O Module to make a