SRS Labs SR430, Руководство пользователя

Страница: 83 / 146

82
Remote Programming
MODE CONTROL COMMANDS
The parameters in the Mode menu are not adjustable unless the unit is cleared (no data in memory). If the
unit is BUSY or DONE with data acquisition, the mode menu parameters (with the exception of ROFF) are not
adjustable. An execution error is generated if a Mode Control Command which attempts to change a mode
parameter is received during BUSY, PAUSE, or DONE states. Use the serial poll status byte to determine if
the SR430 is CLEAR.
BCLK (?) {i} The BCLK command sets or reads the bin clock time base. The parame-
ter i=0 selects internal, while i=1 selects external. When set to external,
the EXT BIN CLK input determines the width of each bin.
BWTH (?) {i} The BWTH command selects the internal time base bin width. The pa-
rameter i selects a bin width as shown below.
i bin width i bin width
0 5 ns 10 20.48 µs
1 40 ns 11 40.96 µs
2 80 ns 12 81.92 µs
3 160 ns 13 163.84 µs
4 320 ns 14 327.68 µs
5 640 ns 15 655.36 µs
6 1.28 µs 16 1.3107 ms
7 2.56 µs 17 2.6214 ms
8 5.12 µs 18 5.2429 ms
9 10.24 µs 19 10.486 ms
BREC (?) {i} The BREC command sets or reads the bins per record. The record
length is programmed in 1k (1024) steps. The parameter i is an integer
from 1 to 16. If the parameter i=1, the record length is 1k (1024). If i=2,
the record length is 2k (2048), and so on. The maximum value of i is 16
for a maximum record length of 16k (16,384).
RSCN (?) {i} The RSCN command sets or reads the records per scan. The records
per scan is the number of records which will be accumulated. The
records/scan may be programmed from 0 ≤ i ≤ 65535. When set to 0, ac-
cumulation will continue indefinitely. Changing the records per scan dur-
ing data acquisition is allowed. If the new value exceeds the current
record number, then the scan will continue until the new number of
records has been acquired. If the new value is lower than the current
record number, the scan will end after the next accumulation.
BOFF (?) {i} The BOFF command sets or reads the trigger offset. The trigger offset
may be programmed from 0 to 16320 in increments of 16. The value of i
is rounded to the nearest multiple of 16. The BOFF? query responds with
the integer i.
ACMD (?) {i} The ACMD command sets or reads the accumulate mode. The parame-
ter i=0 selects add, i=1 selects toggle, i=2 selects external.
TCNT (?) {i} The TCNT command sets or reads the toggle count. The toggle count
may be programmed from 1 ≤ i ≤16384.
PTOG (?) {i} The PTOG command sets or reads the pause at toggle state. If the pa-
rameter i=0, pause at toggle is not selected. If i=1, pause at toggle is
selected.