Programming Guide – 67
Example
*IDN? returns JDS UNIPHASE, HA9X, 0, YY.YYY
Operation Complete Command
Syntax
*OPC
Function
Causes the attenuator to set the OPC bit in the standard event status register
when all pending operations have been completed.
Example
*OPC
Operation Complete Query
Syntax
*OPC?
Function
Places a “1” in the output queue of the attenuator when all pending operations
have been completed. Because the “1” is not always placed in the output queue
immediately, poll the status byte register and check the MAV bit to determine if
there is a message available in the output queue.
Example
*OPC?
Option Identification Query
Syntax
*OPT?
Function
Reports on options installed or included with the attenuator.
Example
*OPT? returns ??? in all cases (attenuator has no defined device options).
Recall Command
Syntax
*RCL <space><numeric value> where 0 ≤ <numeric value> ≤ 9
Function
Restores the attenuator to a state that has been stored in local memory.
Restoring to state 0 (*RCL 0) is equivalent to sending the *RST command. See
the Save Command for a list of settings that are stored for each state.
Example
*RCL 4
Reset Command
Syntax
*RST
Function
Restores the attenuator to the following settings:
• Total attenuation = 0 dB
• Display offset = 0 dB
• Wavelength = 1310 nm
• LCM state = OFF
• Absolute power mode state = OFF
• Beam block state at power on = LAST
• Beam block state = ON
Example
*RST
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