DSPEC
®
Digital Gamma-Ray Spectrometer
42
before the zero offset is evaluated by the stabilizer and potentially adjusted. See also
SHOW_ZERO_PRESET.
SET_ZERO_WIDTH
chans
Sets the width in channels for the stabilizer zero peak. The zero width must be chosen such
that the beginning channel is no lower than channel 0 and the ending channel is no higher
than the maximum channel as determined by the conversion gain. The zero channel and width
must be set before zero stabilization can be enabled. The absolute minimum width for the
zero peak is 3 channels, and the absolute maximum width for the zero peak is 256 channels in
Gauss mode. In point mode there is no maximum peak width, though the chosen width must
allow the peak to fit within the device’s channel limits as stated above.
Execution Errors:
%131128085<CR>
The specified number of channels would create a peak that was less
than the minimum width (3 channels) or would be outside the
devices range.
%131136084<CR>
The command was attempted while zero stabilization was enabled.
SHOW_ACTIVE
Returns a 1 if the DSPEC is active (i.e., acquiring spectral data) or 0 if it is not active.
Responses:
$C00000087<CR>
Not active.
$C00001088<CR>
Active.
SHOW_ACTIVE_DEVICES
Returns a bit mask of the currently active devices as follows:
Responses:
$C00000087<CR>
No devices are active.
$C00001088<CR>
Only device 1 is active.
SHOW_ADC_CONVERSION
Debugging command that returns the most recent conversion from the ADC. Returns 0 if no
conversion is available. See also SET_ADC_CONVERSION command.
Responses:
$C00000087<CR>
No conversion available.
$C00405096<CR>
405 was the most recent conversion.
SHOW_ALARM
Returns a record showing whether the alarm responses are enabled or disabled for a particular
communication path. If SHOW_ALARM is received on the serial line, the response indicates
whether alarms are enabled for the serial line. If SHOW_ALARM is received by the mailbox,
the response indicates whether alarms are enabled for the mailbox.
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