Bristol 428 - Page 58

Model 428 User’s Manual REMOTE COMMUNICATIONS
Bristol Instruments, Inc. 58
:MEDium?
Description
Queries the medium used for wavelength calculations.
Query Response
{ AIR | VAC }
Examples
:SENS:MED?
:MEDium {AIR | VACuum}
Description
Sets the medium used for wavelength calculations. It is the same as
using the Medium function via the front panel display.
*RST value
VAC
Examples
:SENS:MED AIR
:SENS:MED VAC
:POWeroffset?
Description
Queries the power offset being added to power values. It is the same as
using the Poffs function via the front panel display. The power offset is in
units of dB.
Query Response
{ OFF | 1 | 2 | 3 | ... | 19 | 20 }
Examples
:SENS:POW?
:NULL
Description
Resets the null value used for the power calculation. This is to be used
only when the fiber connector protective cap is on to ensure that light
does not enter the system.
*RST value
0.00
Examples
:SENS:NULL
STATus Subsystem
The STATus subsystem { XE “Commands:STATus” } is used to retrieve status
information from the instrument and to mask or screen what status can be retrieved.
Status registers give information about the instrument and the latest measurement.
Status enable registers allow some status information to be ignored. Status information
disabled though the status enable registers will not show up in the status registers.