REMOTE OPERATION
Common Commands and Queries
10_15 LDC-3900 Series 55
CHAPTER 3
*PUD?
The Protected User Device query allows the user to retrieve the contents of the
*PUD storage area. The response is the contents of the unique data which was
last entered. The syntax of the *PUD? query is:
The initial (factory set) response value of the *PUD? query is:
#221nnnnnnnnLLOOMMDDYYABC
-where the response is <ARBITRARY BLOCK RESPONSE DATA>: nnnnnnnn
represents the 8-digit serial number, LL represents the hardware revision level,
OO represents option information, MMDDYY represents the date of calibration
(month, day, year), and ABC represents the initials of the calibrating technician.
*RCL
The *RCL (Recall) command restores the LDC-3900 to the setup state which is in
its local memory (Bin 0 - 10). The following criteria are restored when the *RCL
command is given:
• The LDC-3900 is in the parameter state which was last stored in that bin.
• The outputs (Laser and TEC) are both off.
The "bin" information includes the LDC-3900's modular configuration. If the LDC-
3900 has a different modular configuration than that of the recalled "bin", the recall
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