LAMBDA VF-5 OPERATION MANUAL – REV. 1.04A (20190606)
32
Command
Value
(Decimal, hexadecimal,
& binary)
Description
or
Get Base
Wavelength
Assignments for
All Filter
Positions
Error Return: If an invalid filter position
is specified with this command, the
controller returns two bytes indicating an
error. The first byte is the “error” byte,
and consists of 234 decimal (EA
hexadecimal). The second byte indicates
the erroneous filter position and ranges
from 240 (F0 hex) through 249 (F9 hex).
Get if command is followed by FA. The
data returned begins with F0 (Filter
Position 0) and two bytes containing the
assigned base wavelength in nanometers,
F1 and two bytes for Position 1, and so on,
on to F9. The two bytes following each
odd-numbered position will contain 0.
Get Controller
Type and
Configuration *
253
FD
11111011
Queries the controller as to its type and
configuration.
5.6
Command Descriptions
5.6.1
Switch to Wavelength Command (218d (DAh))
Based on the wavelength (338 – 800 nm) in the next two bytes, the specific filter and angle
are set according to an internal lookup table.
The Switch to Wavelength command also includes the Set Tilt Speed command, which is
embedded in the high-order two bits of the 16-bit (word (two bytes)) containing the
wavelength in nanometers that follows the command byte.
If the new wavelength specified is not within the range available based on the configured
base wavelengths, then an error will occur and the following message will momentarily be
displayed on the controller’s display, as follows:
Commands sent to the controller via the serial or USB interface are structured in a one-byte
(8-bit) signal. Some commands are followed by one or more bytes containing additional
NEW NM NUMBER IS
NOT AVAILABLE...
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