APPENDIX C. FIRMWARE COMMANDS
45
C.3.5
Request Instrument Parameters
Function
Code
Description
Char + ‘|’
0x7C
Header 1
Char + ‘&’
0x26
Header 2
CTRL + ‘E’
0x05
Send the counter’s parameter list.
C.3.6
Set Instrument Parameters (Ignored if in an Acquisition Cycle)
Function
Byte
Code
Description
Char + ‘|’
1
0x7C
Header 1
Char + ‘&’
2
0x26
Header 2
CTRL + ‘N’
3
0x0E
Set the counter’s parameters.
start_delay
(lsb)
4
0xnn
Start delay
—
lower byte (bits 0
–
7)
start_delay
(msb)
5
0xnn
Start delay
—
upper byte (bits 8
–
9)
bin_per
(lsb)
6
0xnn
Bin width
—
lower byte (bits 0
–
7)
bin_per
(msb)
7
0xnn
Bin width
—
upper byte (bits 8
–
15)
sg_delay
(lsb)
8
0xnn
Sec. Gate delay
—
lower byte (bits 0
–
7)
sg_delay
(msb)
9
0xnn
Sec. Gate delay
—
upper byte (bits 8
–
9)
sg_per
(lsb)
10
0xnn
Sec. Gate width
—
lower byte (bits 0
–
7)
sg_per
(msb)
11
0xnn
Sec. Gate width
—
upper byte (bits 8
–
9)
cnt_stop
12a
0xnn
Counter stop value 10n (n=0
–
9) (bits 0
–
3)
acq_mode
12b
0xnn
Acq. Mode (bit 4), Control (bits 5
–
7)