D. Controller Socket Level

Each STARGRASP boardset controls up to 2 independent detector devices (referred to as "dev 0" and "dev 1"). Each of these two devices can have up to 8 output amplifiers (16 channels per daq board.) These commands take a similar name="value" parameter syntax as the demo scripts. We intend to collect information from our internal site and complete the possible parameter lists for each of these, under the (currently dead) links below:

• reset - Reset the controller software into its original power-on state.
• console? - Turn on or off serial port console feedback
• dev - Select detector device 0 or 1
• adc - Set ADC operating modes
• clk - Get or set digital output bits
• dac - Get or set DAC channel (apply voltages)
• readcal - Calibrate internal signal offset
• detsize - Set amplifiers width,height,prescan
• clvset - Set clocking parameter(s) from cestlavie
• clean - Clean the CCD of charge
• readout - Read pixels into memory buffer

In some applications, STARGRASP is able to drive the camera shutter directly. These additional commands apply:

• etime - Set the next shutter exposure time
• etype - Set the next exposure type (o/b/d)
• expose - Take a timed exposure
• shutter - Manually open or close the shutter

STARGRASP was designed to support the unique features of Orthogonal Transfer Arrays. When controlling OTA CCDs, the following apply:

• otacal - A version of readcal that calibrates each cell
• celldes - Designate cell usage (Science, video, etc.)
• cellsel - Set designated cells to select, standby or float
• pixtype - Set OTA pixel type I or II (or 0 for CCD)
• ot - Preliminary command to perform "OT shifts" on an OTA CCD