Vertex Standard FT-1000MP manual Byte Data Record Structure

CAT System Computer Control

16-BYTE DATA RECORD STRUCTURE

The following tables outline the 16-byte data record structure common to the Operating Data, VFO-A, VFO- B and Memory Data records. The table below shows assignments for each of the 16-bytes in the Operating Data Record.

Byte 16-Byte Data Record Assignment

0Band Selection

The Band Selection data byte is divided into two 4- bit fields, representing the first and second value of the band number hex code. The Bit 0 and Bit 1 of the first field are used as flags for the memory mask and scan skip feature. A bit value of “1” means enabled, and “0” for disabled. Each value of the hex code is entered into its respective field in 4-bit binary format. The table below outlines the Data Byte field, and show an example of how the 24.5 ~ 25.0 MHz band would

2

3

4

5

6

Operating Frequency

Clarifier Offset

be read as:

Band Selection Data Byte (0)

Bit 0*	Bit 1**	Bit 2	Bit 3	Bit 4	Bit 5	Bit 6	Bit 7
	Field 1				Field 2
0*	0**	0	1	1	0	0	1

7Operating Mode

8IF Filter Offset

9VFO/MEM Operating Flags A ~ F Not Used

Band Selection - The 0.1~30 MHz transceiver op- erating range is divided into 28 bands, represented in hexadecimal format in the table below. Data read in this record after downloading is in binary format, and must be converted to hexadecimal, then translated to the corresponding band.

Hex	Band	Hex	Band
Code		Code
01H	0.1 ~ 0.5 MHz	0FH	10.5 ~ 12.0 MHz
02H	0.5 ~ 1.5 MHz	10H	12.0 ~ 14.0 MHz
03H	1.5 ~ 1.8 MHz	11H	14.0 ~ 14.5 MHz
04H	1.8 ~ 2.0 MHz	12H	14.5 ~ 15.0 MHz
05H	2.0 ~ 2.5 MHz	13H	15.0 ~ 18.0 MHz
06H	2.5 ~ 3.0 MHz	14H	18.0 ~ 18.5 MHz
07H	3.0 ~ 3.5 MHz	15H	18.5 ~ 21.0 MHz
08H	3.5 ~ 4.0 MHz	16H	21.0 ~ 21.5 MHz
09H	4.0 ~ 6.5 MHz	17H	21.5 ~ 22.0 MHz
0AH	6.5 ~ 7.0 MHz	18H	22.0 ~ 24.5 MHz
0BH	7.0 ~ 7.5 MHz	19H	24.5 ~ 25.0 MHz
0CH	7.5 ~ 8.0 MHz	1AH	25.0 ~ 28.0 MHz
0DH	8.0 ~ 10.0 MHz	1BH	28.0 ~ 29.0 MHz
0EH	10.0 ~ 10.5 MHz	1CH	29.0 ~ 30.0 MHz

*Mem	**Scan	0001 = 1	1001 = 9
Mask	Skip
“0” = Off		19H = 24.5 ~ 25.0 MHz
“1” = On		(refer to band chart)

Operating Frequency - Likewise, the current op- erating frequency is similarly coded, this time into four bytes comprised of eight fields, from MSB to LSB. For example, a read binary value of 0000 0000 000 0101

0010 0100 0001 0000 is 14.250.00 MHz as follows:

Operating Frequency Data Bytes (1-4)

	Byte 1								Byte 2									Byte 3								Byte 4
Field 1				Field 2				Field 3				Field 4				Field 5				Field 6				Field 7				Field 8
MSB																												LSB
0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	1	0	0	1	0	0	1	0	0	0	0	0	1	0	0	0	0
0				0				0				5				2				4				1				0
10’s				10’s					1’s			10’s				100’s					1’s			10’s				100’s
	Hz				Hz			kHz					kHz				kHz			MHz				MHz				MHz

00052410 = 14.250.00 MHz

Clarifier Offset - Clarifier offset is written using 16- bit binary data in two bytes. Negative offsets are ex- pressed in binary 2s-complement format, with a lead- ing bit flag value* of “1.” Although frequency resolution below 10 Hz cannot be viewed, absolute Clarifier off- sets down to 0.625 Hz can be read from downloaded data.

Arithmetic conversion must be done on the binary value to arrive at the actual frequency offset (multiply- ing the 16-bit binary offset by 0.625). For example, a binary value of 0011 1110 0110 1111 (3E6FH or 15,983) multiplied by 0.625 results in an offset of +9989.375 Hz.

MARK-V FT-1000MP Operating Manual page 91