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Cygnus 2 Operating Manual
1.4.5 DAC Outputs
Quantity and Type . . . . . . . . . . . . . . . . . . . . 6 with BNC, 6 optional with 15 pin
miniature D-sub providing analog
outputs for Rate and Thickness.
Configuration . . . . . . . . . . . . . . . . . . . . . . . . User programmable for recorder
or Source control.
Function and Ranges . . . . . . . . . . . . . . . . . . Power, Rate, Rate Deviation,
Thickness Full scale voltage value
fully selectable up to + or - 10 V
relative to 0 V at 0 output
Current rating . . . . . . . . . . . . . . . . . . . . . . . . 20 mA per channel
Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . 15 bits over full range (10 V)
Update Rate . . . . . . . . . . . . . . . . . . . . . . . . . 10 Hz, maximum, (dependent on
source characteristics).
Recorder Output Functions . . . . . . . . . . . . . Rate, Thickness, Rate Deviation, or
Source Power.
Recorder Output Ranges
Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to up to 99999 Ã…/s programmable
Thickness . . . . . . . . . . . . . . . . . . . . . . . . 0 to up to 99999 Ã… programmable,
[Function modulo (Thickness Range,
Thickness)output is "saw-tooth" like
with increasing thickness.]
Rate Deviation . . . . . . . . . . . . . . . . . . . . Desired rate ±50 Å/s
Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1%