Appendix A. REMOTE CONTROL (v4.16.2)
The USB 1.1 interface is the serial one working with 12 MHz clock. Its speed is relatively high and it ensures
the common usage of USB in all produced nowadays Personal Computers.
The HOST USB functionality is also available. The USB HOST controller installed in the instrument enables
the user to connect to this meter the USB memory sticks, USB hard disks, USB printers etc.
The RS 232 interface is also available but as an option. In order to activate this option the user has to by a
special cable with a programmed processor. This interface complies with CCIT V.24 standard. Practically all
Personal Computers can be linked to the instrument by means of this interface.
The maximum available transmission speed is equal to 115200 bits / sec.
The functions which are developed in order to control data flow in the serial interface ensure:
- bi-directional data transmission,
- remote control of the instrument.
The user, in order to programme the serial interface, has to:
1. send "the function code",
2. send an appropriate data file
or
receive a data file.
A.1. INPUT / OUTPUT TRANSMISSION TYPES
The following basic input / output transmission types (called functions) are available:
#1 input / output of the control setting codes,
#2 output of the measurement data in the sound level meter (SLM) or vibration level meter (VLM) mode,
#3 output of the measurement data in 1/1 OCTAVE or 1/3 OCTAVE mode,
#4 read out the data file from the internal Flash-disc and/or the special file located in the RAM memory,
#5 read out the statistical analysis results,
#6 remote setting of the user filters,
#7 special control functions,
#9 send the setup file to the internal Flash-disc.
A.2. FUNCTION #1 – INPUT / OUTPUT OF THE CONTROL SETTING CODES
Function #1 enables the user to send the control setting codes to the instrument and read out a file of the
current control state. A list of the control setting codes is given in Tab. A.1.
The format of #1 is defined as follows:
#1,Xccc,Xccc,(...),Xccc;
or
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