C O M M A N D R E F E R E N C E
LDX-32420 Device-Dependent Command Reference
64
LDX-32420
C H A P T E R
4
The LASer:TOLerance command allows the programmer to determine the LASER
current tolerance and time window for it to occur, in order that the operation complete flag
be set after a "LASer:OUTput 1" command is issued or the LASER setpoint is changed.
The LASer:TOLerance? query allows the programmer to determine how the LASER
current tolerance is set.
- the response consists of two values, the first is the current tolerance in A and the
second is the time window, in seconds.
Parameters
Amps: represents the LASER current tolerance in A with a range of 0.001 to 1.000 A.
Time: represents the time window, in seconds, with a range of 0.001 to 50.000 seconds.
Notes
The LDX-32420 defaults to a tolerance of 0.010 A for three seconds, unless changed by
the LASer:TOLerance command.
If the LDX-32420 is operated in P mode, the current tolerance parameter is not used.
Instead a fixed value of 50 µA is used for the I
PD
current. A fixed value of 0.1 W is used for
P
PD
power, and only the time window parameter may be adjusted.
The tolerance of the LDX-32420 LASER current may be used to delay programming after
an "LASer:OUTput 1" command is issued or the setpoint is changed.
A change of the output into or out of tolerance flag sets a flag in the LASER status event
register and so entering or exiting LASER current tolerance may be used to generate
service requests.
Note:
If the tolerance is set too tight it may never be achieved. This is due to the
calibration of the setpoint and measurement values.
Examples
"Las:Tol 0.005,10" - action: the LDX-32420's LASER current source will be in tolerance
when the LASER current is within 0.005 A for 10.000 seconds.
"Las:Tol?" - response: "0.002,5.0", means the LDX-32420 has a LASER current
tolerance setting of 0.002 A with a time window of 5.000 seconds.
The MESsage command allows the user to enter an ASCII string of up to 16 non-NULL
characters. This command may be useful for storing messages that relate to a test or
configuration.
The MESsage? query returns the previously stored message. This message will always
be 16 bytes long and enclosed in quotes.
Parameters
String: an ASCII string that is 1 - 16 bytes in length.
Notes
The message may contain any ASCII character, but will be terminated when a NULL
terminator character is received. If the message has less than 16 bytes, the software will
fill the remaining message space with the space character. After 16 bytes have been
entered, the software will terminate the string.
The response data will be a 16-byte long string. If there is no previously stored message,
the response will be " ", all spaces.
Examples
MESSAGE "This is a test." - action: The string, "This is a test. " will be stored in
non-volatile memory.
"MES?" - response: "Test 3 ", means the previously stored message was "Test 3".
LASer:TOLerance <Amps>,<Time>
LASer:TOLerance?
F
RONT
P
ANEL
R
EMOTE
MESsage <string>
MESsage?
F
RONT
P
ANEL
R
EMOTE
Summary of Contents for LDX-32420
Page 3: ......
Page 9: ...L I S T O F FIG U R E S vi LDX 32420...
Page 11: ...L I S T O F TA B L E S viii LDX 32420...
Page 17: ...WA R R A N T Y xiv LDX 32420...
Page 41: ...O P E R A T I O N Operating a Laser in Constant Power P Mode 24 LDX 32420 C H A P T E R 2...
Page 57: ...RE M O T E O PE R A T I ON Error Messages 40 LDX 32420 C H A P T E R 3...
Page 103: ...C A L IB R A TI O N A N D TR OU BL E S HO O T IN G Error Messages 86 LDX 32420 C H A P T E R 6...
