REMOTE OPERATION
Common Commands and Queries
10_15 LDC-3900 Series 53
CHAPTER 3
The syntax for the *OPC? query is:
*PSC
The Power-on Status Clear command controls the automatic power-on clearing of
the Service Request Enable Register, the Standard Event Status Enable Register,
the Event Status Enable Register, the Condition Status Enable Register, and the
Parallel Poll Enable Register. The syntax for this command is:
where the data is a Boolean value:
0 - Power-on-status-clear flag is set FALSE, therefore allowing SRQ interrupts after power
on.
1 - Power-on-status-clear flag is set TRUE, therefore clearing all enable registers and
disallowing SRQ interrupts to be asserted after power-on.
When the "*PSC 1" command is sent, the LDC-3900 will clear the above-
mentioned enable registers (set them all to 0) at power-up. This may be done to
avoid any undesirable service requests after a power on/off cycle of the LDC-3900
Modular Laser Diode Controller.
The factory default value for this bit is 0, Power-on Status Clear is disabled.
Therefore, the values of the enable registers are restored from their condition at
the last power-down when a power-up occurs.
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: *
PROGRAM DATA>
<DECIMAL
NUMERIC
PSC
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