Martel Electronics BetaGauge 321A - Manual (Page 30)

Common Commands
Standard commands used by most devices. These commands always begin with an “*”.
For example
*IDN?
tells the calibrator to return its identification.
Query Commands
Commands that ask for information, they always end with a “?”. For example:
FUNC?
Returns the current modes of the calibrator displays.
Compound Commands
Commands that contain more than one command on one line. For example;
RTD_TYPE PT385_100;RTD_TYPE?
Sets the calibrator to RTD type PT385_100 and queries it to verify. It will return:
PT385_100
12.4.2 Character Processing
The data entered into the calibrator is processed as follows:
• ASCII characters are discarded if their decimal equivalent is less than 32 (space),
except 10 (LF) and 13 (CR):
• Data is taken as 7-bit ASCII
• The most significant data bit is ignored.
• Upper or lower case is acceptable.
12.4.3 Response Data Types
The data returned by the calibrator can be divided into four types:
Integer
For most computers and controllers they are decimal numbers ranging from -32768 to
32768. For example:
FAULT? could return 110
Refer to the Error Codes table (Table 8) for more information on error codes.
Floating
Floating numbers have up to 15 significant figures and exponents. For example:
CPRT_COEFA? returns 3.908300E-03
Character Response Data (CRD)
Data returned as keywords. For example:
RTD_TYPE? returns PT385_100
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