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SV 971A User Manual – Appendixes

148

#4,4,offset,length; part of current setup file,

where:

offset - offset from the beginning of the current setup file,

length - number of bytes to read,

Note: The "\" character is treated as the file name of the catalogue and must be sent to the instrument.

All data words are sent <LSB> (least significant byte) first.

When an error is detected in the file specification or data, the instrument responds with:

#4,?;

Note: Current setup file placed in RAM is serviced by this command in SV 971A only. For data files

access see A.1 Function #D – data files access.

A.6. FUNCTION #5 – STATISTICAL ANALYSIS RESULTS READ-OUT

#5 function enables one to read out the statistical analysis results.

#5 function format is defined as follows:

#5,p;

where:

p - the number of the profile (1, 2 or 3)

The device responds, sending the current classes of the statistics in the following format:

#5,p;<Status Byte> <LSB of the transmission counter> <MSB of the transmission counter>

Status Byte gives the information about the current state of the instrument.

where:

D7 = 0 means "overload does not happen",

= 1 means "overload appeared",

D5 = 0 instantaneous current result (RUN State),

= 1 final result (STOP State),

D6, D0 to D4 reserved bits.

Note: There is no any succeeding transmission in the case when the Status Byte is equal to zero.

The transmission counter is a two-byte word denoting the number of the remaining bytes to be transmitted.

Its value is calculated from the formulae:

Transmission counter = 6+n * (4 * the number of the classes in the statistics)

where:

n is a number of the transmitted statistics. For p = 1, 2 or 3 only one statistic is transmitted (n = 1).

NofClasses is a two-byte word denoting the number of classes in the statistic.

BottomClass is a two-byte word denoting the lower limit of the first class (*10 dB).

ClassWidth is a two-byte word denoting the width of the class (*10 dB).

Svantek SV 971A User Manual

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