Stanford Research Systems DS360 Operating Manual And Programming Reference page 78

4-20 Remote Programming
$PST (?) i
$WRD (?) j, {k}
DS360 Ultra Low Distortion Function Generator
The $PST command sets the DS360 post-amplifier attenuators to range i. The
integer i is the attenuation range, which takes values from 0 to 3. Each range sets
the post-attenuators to -20*i dB. Setting the amplitude will return the attenuators
to their normal position. The $PST? query returns the current attenuator position.
The $WRDj,k command sets the value of calibration word j to k. Parameter j
may have a value from 0 to 950, while k may range from - 3270 to 65535. This
command will generate an error if the calibration jumper is not enabled. NOTE:
This command will alter the calibration of the DS360. To recall the factory
calibration, use the $FCL command (Factory Calibration Calbytes). Calibration
bytes cannot be altered unless the warm-up bit has been set. NOTE: This is a
factory command only and is not available for customer use.