BNC 835 Programmer Manual - Manual (Page 33)

Berkeley Nucleonics Corporation 2955 Kerner Blvd., San Rafael, CA 94901
Phone: 415-453-9955, Fax: 415-453-9956, Email: [email protected], Web: www.berkeleynucleonics.com
This command presets the user- flatness correction to a factory- defined setting that consists of one
point.
CAUTION The current correction data will be overwritten once this command is executed. Save the
current data if needed. Refer to :FLATness:STORe command for storing user- flatness files.
:FLATness[:STATe]
[:SOURce]:CORRection:FLATness[:STATe] ON|OFF|1|0
[:SOURce]:CORRection:FLATness[:STATe]?
This command enables or disables the user- flatness corrections.
*RST 0
:MEMory:FILE:CORRection:FLATness:DATA
:MEMory:FILE:CORRection:FLATness:DATA {<”filename”>},<data>
:MEMory:FILE:CORRection:FLATness:DATA? {<”filename”>}
The command writes data to a flatness correction file.
The query returns flatness correction file data.
Data sent or received has IEEE488.2 definite block data format:
#<num_digits><byte_count><data byte>{<data_byte}
<num_digits> specifies how many digits are contained in <byte_count>.
<byte_count> specifies how many data bytes follow in <data_bytes>.
Example of definite block data:
#2141000000000;1.0
#214…: byte count is two digits wide
#214…: 14 data bytes will follow
…1000000000;1.0: 14 bytes of data
The flatness correction data itself consists of values separated by semicolon “;” and rows separated by
carriage return “\r” and/or newline “\n”. Two values (frequency in Hz, power correction in dBm) make a
row. Each row defines one flatness correction point.
Example of two points flatness correction (first point 100 MHz, +1 dB; second point 200 MHz, -1 dB):
100000000;1.0\r\n
200000000;-1.0;\r\n
: MEMory:FILE:CORRection:FLATness:LOAD
:MEMory:FILE:CORRection:FLATness:LOAD "<file name>"
This command loads a user- flatness correction file. The "<file name>" variable is the name of the file
located in the directory USERFLAT. The directory path is implied in the command and need not be
specified in the variable name.
: MEMory:FILE:CORRection:FLATness:STORe