Busy Line - Sutter Instrument Lambda DG-4 Operation Manual

40
Command
Start Loading Ring
Buffer
Start Change of Neutral
Density Setting
Increase Value of Galvo
DAC for Neutral
Density
Decrease Value of Galvo
DAC for Neutral
Density
End Change of Neutral
Density Setting and
Save
Go On Line (Transfer
Control to Computer)
End Loading Ring
Buffer
Run from Ring Buffer
End Run from Ring
Buffer

4.1.4 Busy Line

The Lambda DG-4/5 parallel interface has only one output line, BUSY. The first response of
the unit to a new command is to set the BUSY output line HIGH. The BUSY line will stay
HIGH until the control unit is ready to accept new data..
The status of the 8 input lines is not checked while the BUSY line is HIGH! There is a short
period (as much as 50 microseconds) between when the control unit detects a new value and
Value
(Decimal;
hexadecimal;
binary)
Places the controller in a mode that allows a series of filter
223
values to be loaded in the ring buffer
DF
11011111
Places the controller in the N.D. adjust mode. In this mode,
234
EA the output galvo position for the selected filter value can be
11101010
changed as a fine adjustment for output intensity.
Increases the galvo DAC value by 1 unit
235
EB
11101011
Decreases the galvo DAC value by 1 unit
236
EC
11101100
Saves the new galvo DAC value and returns to the normal
237
on-line mode
ED
11101101
When the control unit is in the local mode, the unit will be
238
forced to go on-line if this code is sent. The input from which
EE
11101110
this command is received will be the active input and will be
identified on the front-panel display. Sending this command
via one input when the other input is active will cause the
unit to select the input from which the command was
received.
do not send 238 by the other channel and do not attempt to
go to the local mode!
between modes continuously.
Sent after the final value to be loaded in the ring buffer. This
240
F0 saves the new ring buffer values and returns to the normal
11110000
on-line mode.
When this command has been sent, the filter value will be
241
F1 controlled by the ring buffer. The controller will step
11110001
through the ring buffer, advancing to the next filter for each
trigger or sync pulse. One of the three modes of triggering
must be selected first.
Returns to normal on-line mode
242
F2
11110010
LAMBDA DG-4 & DG-5 OPERATION MANUAL – REV. 3.05C (20150414)
Description
If 238 is the current command of the either input,
In either case, the controller will loop