VTI Instruments Corp.
36
VM3608A/3616A Programming
SCAN
The Scan command is used to enable or disable the operation of the scan list operation for the
specified channels. For each channel that is enabled, the interrupt routine will load a voltage from
its respective scan list arrays at the current array position to the DAC and auto increment the scan
list array pointer. If the array pointer equals the limit, then the scan function for that channel will
stop, unless the mode of that channel is set to LOOP. LOOP mode means the scan function will
reset the array pointer to 0 and continue.
When the scan mode is to be enabled, a trigger source of either EXTernal or one of the
TTLTriggers is required to be selected first. The TRIGer:IMMediate:ADVance must be set when
using ARBitrary mode.
Note that a scan mode of a channel must first be set to OFF before another mode may be set. The
SCAN OFF command would reset all channel scan modes to OFF.
SCAN<mode>,<channel_list>
Where <mode> can be 0 | OFF | 1 | ON | LOOP | FIFO |
ARB. LOOP mode means the scan function will reset the
array pointer to 0 and continue.
Where <channel_list> is a list of 8 or 16 DAC channels.
EXAMPLES
SCAN ON, (@1:4)
Sets the scan mode to ON for Channels 1 through 4.
SCAN?2
ON (Returns the scan mode for Channel 2, which is currently
set ON.)
SCAN ON,(@1)
Sets the scan mode to ON for Channel 1.
SCAN LOOP,(@1)
This would normally set the scan mode for Channel 1 as
LOOP. However, as the transition from ON to LOOP is illegal,
a system error would be generated.
SCAN OFF, (@1:4)
Sets the scan mode for Channels 1 through 4 to OFF.
SCAN ARB, (@1:4)
Sets the scan mode for Channels 1 through 4 to ARBitrary
mode.
Содержание VM3608A
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