Owner`s manual

M SERIES DAC
BASE UNIT AND MODULE OPERATION
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between the command letters and <cr>. This number is
typically the desired input channel(s) for the data
command. If you have a requirement to send the data
command to multiple channels simultaneously, you may
use one of the following formats as shown for the SA
(sample) command:
SA1,2,3,4,5,6,7,8<cr> Take a single sample for Ports 1-8
SA1-8<cr> Take a single sample for Ports 1-8
SA /0<cr> Take a single sample for Ports 1-8
SA1,2,4-8<cr> Take a single sample for Ports 1, 3, 4, 5, 6, 7, and 8
3. After you have sent the desired data command(s) to the V77 ADM-
1 module, you may disconnect by sending $BT<cr>. You may
disconnect from the V77 ADM-1 and select a different module or
the base unit by sending $BTn<cr>.
IMPORTANT: If the V77 ADM-1 is operating in self reporting mode (i.e.,
Immediate or Schedule Reporting Method) and a host device issues a data
command, the host system must disconnect by sending the Port Select Code
and <cr> before the V77 ADM-1 will resume sending data messages to the
designated host module.
CALIBRATE COMMAND
The Calibrate (CA) command initiates auto-calibration. When this command is sent,
the V77 ADM-1 tests for offsets and automatically generates a correction value to
remove any that are observed. These offset corrections are applied to all A/D values
from /0 to 1/0/0 % of Full Scale (FS). Corrections are continually applied to all
reported data messages until another Calibrate command is issued. At that time, a new
calibration is performed and any resulting corrections applied to future readings. The
Calibrate command has the following format:
CAn<cr>
where n=/0 to 3 (/0 = all, 1 = 25%, 2 = 5/0%, and 3 = 75% of FS).
CLEAR BUFFER COMMAND
The Clear Buffer (CB) command is useful to clear all old data from the FIFO buffer
when a new data set is started. If the buffer is not cleared, previous data samples
remain in the buffer until overwritten. The Clear Buffer command has the following
format: