Fluke 522A/6, Operator'S Manual

Page: 175 / 426

Remote Operations
How to Use Commands
5
5-33
Incoming Character Processing
The Calibrator processes all incoming data as follows (except Binary Block Data as
described under Parameter Syntax Rules):
1.
The most significant data bit (DIO8) is ignored.
2. All data is taken as 7-bit ASCII.
3. Lower-case or upper-case characters are accepted.
4. ASCII characters whose decimal equivalent is less than 32 (Space) are discarded,
except for characters 10 (LF) and 13 (CR) and in the
*PUD
command argument.
Binary Block Data allows all characters in its argument and terminates in a special
way.
Response Message Syntax
In the command descriptions in Chapter 6, responses from the Calibrator are described
wherever appropriate. In order to know what type of data to read in, refer to the first part
of the entry under "Response" in the tables. The response is identified as one of the data
types in Table 5-10.
Table 5-10. Response Data Types
Data Type Description
Integer
Integers for some controllers or computers are decimal numbers in the
range -32768 to 32768.
Responses in this range are labeled Integer.
Example:
*ESE 123; *ESE?
returns:
123
Floating
Numbers that may have up to 15 significant figures plus an exponent
that may range from
±
E20.
Example:
DC_OFFSET?
returns:
1.4293E+00
String
Any ASCII characters including quotation mark delimiters.
Example:
SRQSTR “SRQ from 5522A”; SRQSTR?
returns:
“SRQ from 5522A”
Character Response Data
(CRD)
This type of response is always a keyword.
Example:
OUT 10V, 100HZ; FUNC?
returns:
ACV
Indefinite ASCII (IAD)
Any ASCII characters followed by EOM. Queries with this type of
response MUST be the last Query in a program message.
Example:
*OPT?
returns:
SC600
CAL reports and lists which contains Line Feeds are typically of this
type.