Anritsu ML2430A Bedienungsanleitung PDF herunterladen (Seite 149)

Returned

String:

OFFTBL <s>,<val>

OFFTBR Output an offset table

SENSOR

Syntax:

OFFTBR <val>

val:

1 to 5

Remarks:

Outputs the selected offset table. The returned string is constructed as fol

lows:

OFFTBR #<length><number_of_bytes>,<element1<element2><ele

mentn>

Where <length> is the character size of the <number_of_bytes> field and

<number_of_bytes> is the number of bytes which make up the string after

the comma (,). For example:

OFFTBR #41600,<data...>

4 = number of character to read next for the data length

1600 = One thousand and six hundred bytes of data to read in, represent-

ing 200 elements placed one after the other without commas. Each <ele-

ment> is made up of 8 bytes; the first four bytes are the Frequency and the

second four bytes are the corresponding dB value for the Frequency. For

example:

<data_element1><data_element2><data_element3> is equal to:

<freq1><dB1><freq2><dB2><freq3><dB3>... is equal to:

<4bytes1><4bytes1><4bytes2><4bytes2><4bytes3><4bytes3>

The 4 byte binary values are 4 bytes single precision floating point binary

data. The C programming example 'Binary output decoding' on page

6-133 shows how to extract the binary data.

OFFTBU Updates an offset table

SENSOR

Syntax:

OFFTBU <val>,<bytes>,<binary_data...>

val:

1 to 5

bytes:

number of bytes in the binary_data string

binary_

data:

frequency and dB offset

Remarks:

This command updates the offset table specified by <val>. <bytes> is the

number of bytes in the binary_data string and <binary_data> is a string

which represents the frequency and the dB offset to apply in the format of:

<element1><element2><elementn...>, where <elementn> has four bytes

to represent the frequency and four bytes to represent the dB value. The

four byte value can be created by multiplying the floating point number by

1024 and converting the LONG number to an ASCII string. For example:

6-62 ML2430A OM

ML24XXA NATIVE COMMANDS GPIB OPERATION

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