REMOTE OPERATION
Common Commands and Queries
54 LDC-3900 Series
CHAPTER 3
*PSC?
The Power-on Status Clear Query allows the programmer to query the LDC-3900
Modular Laser Diode Controller's power-on-status-clear flag. A response of 0
means that the Standard Event Status Enable Register, Service Request Enable
Register, the Event Status Enable Register, the Condition Status Enable Register,
and the Parallel Poll Enable Register will retain their values when power is
restored to the LDC-3900 Modular Laser Diode Controller. A returned value of 1
indicates that the registers listed above will be cleared when power is restored to
the LDC-3900 Modular Laser Diode Controller. The syntax for this query is:
*PUD
The Protected User Data command stores data unique to the LDC-3900 Modular
Laser Diode Controller, such as calibration date, serial numbers, etc. This data is
protected by restricted entry ("SECURE <nrf>" command) and is usually only
entered at the time of service or calibration.
This data is a fixed size of 21 bytes. The syntax of the *PUD command is:
-where the user's input (unique data) is exactly 21 bytes.
<white
space>
: *
<ARBITRARY
BLOCK
PROGRAM DATA>
PUD
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