China Electronics Technology Instruments AV3672 Series, User Manual

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9 Remote control
9.1 Basis of Remote Control
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Discrete response data are essentially similar to discrete parameters. The major difference is that only the discrete
response data in the short uppercase format are returned.
Example of discrete response data:
MLINear
Display format is linear amplitude
MLOGarithmic
Display format is logarithm amplitude
PHASe
Display format is phase
Numeric Boolean Response Data
Boolean response data returns a binary numeric value of 1 or 0.
String Response Data
String response data are similar to string parameters. The main difference is that the double quotation marks instead
of single quotation marks must be used as the separator of the string response data. Double quotation marks are
allowed to be embedded in the string response data, with no character. Some examples of string response data are
shown below.
“This is a string”
“one double quote inside brackets: (“”)”
6) System of numeric value of command
The command value can be entered in the binary, decimal, hexadecimal or octal format. An appropriate identifier
should be applied in front of the value in the binary, hexadecimal or octal format. The identifier is not required in
the decimal format (default). The entered value with no identifier will be saved in the decimal format. The
following list shows the identifiers for the formats that require them:
➢
#B means that the figure is a binary value.
➢
#H means that the figure is a hexadecimal value.
➢
#Q means that the figure is an octal value.
The following are examples of SCPI command values and identifiers for the decimal value 45:
#B101101
#H2D
#Q55
In the following example, the hexadecimal value 000A is used to set the RF output power as 10dBm (or equivalent
to the value in the selected unit, such as DBUV or DBUVEMF).
:POW#H000A
In the non-decimal format, the measurement unit such as DBM or mV is not used together with the value.
7) Command line structure
One command line may include multiple SCPI commands. The following methods can be applied to end the
current command line:
➢
Enter;
➢
Enter key and EOI;
➢
EOI and the last byte.
Commands in the command line are separated by semicolons. Commands of different subsystems begin with the
colon. For example:
MMEM:COPY"Test1","MeasurementXY";:HCOP:ITEM ALL