Svantek SV 971A, User Manual

Page: 141 / 305

SV 971A User Manual
– Appendixes
141
APPENDIX A. REMOTE CONTROL
The USB 2.0 interface is the Type C serial interface working with 480 MHz clock which enables one to
control remotely the unit. Its speed is relatively high, and it ensures the common usage of USB-C in most
produced nowadays Personal Computers.
Alternatively, all commands described in this appendix are valid for any other kinds of interfaces (if present)
like
Bluetooth communication or RS232 .
Functions, which are developed in order to control data flow in the serial interfaces, ensure:
- Bi-directional data transmission,
- Remote control of the instrument.
In order to program the serial interface, the user has to:
1. send a "function code",
2. get a response to the “function code”
3. send/receive a data file (optionally)
A.1 I
NPUT
/O
UTPUT TRANSMISSION TYPES
Following basic input/output transmission types (called functions) are available:
#1
– general control functions,
#2
– read out of the measurement results in the
SLM mode,
#3
– read out of the measurement results in the
1/1- or 1/3 Octave analysis mode,
#4
– read out data from the setup file,
#5
– read out of the statistical analysis results,
#7
– special control functions,
#9
– writing data to the setup file,
#D
– data files access,
#S
– direct setup access.
A.2 F
UNCTION
#1
–
GENERAL CONTROL FUNCTIONS
#1 function enables the user to send the control setting codes to the instrument and read out a file containing
the current control state. A list of the control setting codes is given in A.3
Control setting codes . The format
of #1 function is defined as follows:
#1,Xccc,Xccc,(...),Xccc; (1)
or
#1,Xccc,X?,Xccc,(...),X?,Xccc; (2)
or
#1,X?,X?,(...),X?; (3)
where:
X - group code, ccc
– new code value,
X? - request to send the current X code setting.
In the first case (1) the instrument does not respond to a command, even if an error occurs.
In the second and third cases (2), (3) the instrument outputs control settings for all requests X? in the following
format:
#1,Xccc,Xccc,(...),Xccc;