Vertex Standard FT-1000MP - Manual (Page 93)

Page 91 O
PERATING
M
ANUAL
16-B
YTE
D
ATA
R
ECORD
S
TRUCTURE
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.
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.
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
be read as:
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 0001 0101
1011 1110 0110 1000 is 15BC68 (HEX) = 14.250.00
MHz as follows:
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.
Byte
0
1
2
3
4
5
6
7
8
9
A ~ F
16-Byte Data Record Assignment
Band Selection
Operating Frequency
Clarifier Offset
Operating Mode
IF Filter Offset
VFO/MEM Operating Flags
Not Used
Hex
Code
01H
02H
03H
04H
05H
06H
07H
08H
09H
0AH
0BH
0CH
0DH
0EH
Band
0.1 ~ 0.5 MHz
0.5 ~ 1.5 MHz
1.5 ~ 1.8 MHz
1.8 ~ 2.0 MHz
2.0 ~ 2.5 MHz
2.5 ~ 3.0 MHz
3.0 ~ 3.5 MHz
3.5 ~ 4.0 MHz
4.0 ~ 6.5 MHz
6.5 ~ 7.0 MHz
7.0 ~ 7.5 MHz
7.5 ~ 8.0 MHz
8.0 ~ 10.0 MHz
10.0 ~ 10.5 MHz
Hex
Code
0FH
10H
11H
12H
13H
14H
15H
16H
17H
18H
19H
1AH
1BH
1CH
Band
10.5 ~ 12.0 MHz
12.0 ~ 14.0 MHz
14.0 ~ 14.5 MHz
14.5 ~ 15.0 MHz
15.0 ~ 18.0 MHz
18.0 ~ 18.5 MHz
18.5 ~ 21.0 MHz
21.0 ~ 21.5 MHz
21.5 ~ 22.0 MHz
22.0 ~ 24.5 MHz
24.5 ~ 25.0 MHz
25.0 ~ 28.0 MHz
28.0 ~ 29.0 MHz
29.0 ~ 30.0 MHz
Bit 0* Bit 1** Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7
0*
*Mem
Mask
Field 1
0**
**Scan
Skip
Field 2
0 1
Band Selection Data Byte (0)
0 1 1 0
0001 = 1 1001 = 9
“0” = Off
“1” = On 19H = 24.5 ~ 25.0 MHz
(refer to band chart)
Byte 1
Operating Frequency Data Bytes (1-4)
Field 1
MSB
0 0 0 0
0
Byte 2 Byte 3 Byte 4
Field 2
0 0 0 0
0
Field 3
0 0 0 1
1
Field 4
0 1 0 1
5
Field 6
1 1 1 0
C
Field 7
0 1 1 1
6
Field 8
LSB
1 0 0 0
8
0015BC68 (HEX) = 1,425,000 = 14.250.00 MHz
Field 5
1 0 1 1
B