M77781A
MS257
™ USB/RS232
MONOCHROMATOR AND SPECTROGRAPH
35
Sending Commands using the Hand Controller
System parameters can be queried or changed using the Hand Controller's keys:
Action Keys (Lt. Blue)
- These keys cause an immediate action to take place and have no
parameters. After the key is pressed the prompt line indicates the action taken or an error code if
there is a problem.
(Command Keys (Red, Orange, Green, Lt. Blue, and Dark Blue Borders)
- The majority of
keys; are termed command keys. Command keys are all the keys which control MS257
parameters. The command keys are grouped by related function. When a command key is
pressed, the command with its current parameter value is displayed on the prompt line. The
cursor is positioned at the start of the field to be edited. The parameter can be edited by using the
DEL
key and entering a new parameter. Various parameters can be reviewed by simply pressing
the respective command keys in sequence.
Numeric Keys (Black)
- These are used for entering parameter values.
Shift Key (Yellow)
- Some command keys have the upper division colored yellow. These
indicate the keys'
Shift
command.
Shift
functions do not need two fingers (or hands) to operate
since the
Shift
key can be pressed with one finger and locks for the next key press, then it
returns to normal.
Clear Key (CLR)
- This clears the value field in the prompt line of the current value.
Delete Key (DEL)
- This deletes the character at the previous position.
Enter Key (ENT)
- If
ENT
is pressed immediately after a command key, the current parameter
associated with that command is preserved. If
ENT
is pressed after a new parameter has been
typed, this accepts the displayed parameter for the associated command. It executes a
RETURN
and the LCD and LEDs are updated. If the parameter is illegal, an error code is reported on the
prompt line (see the MS257 Programming Manual for the error codes).
Escape Key (ESC)
- This aborts any command and parameter entry and returns the > prompt. If
ESC
is pressed when a table of parameters is being entered, all parameters are discarded.
Pressing another command key will have the same effect as would normally occur, and will
initiate a new command.
