Stanford Research Systems DS345, Manual

Page: 61 / 139

Programming Commands
3-11
$ATN(?) i
The $ATN command sets the DS345's output attenuators to range i. The
ranges go for 0dB attenuation (i=0) to 42dB attenuation (i=7) in 6dB steps.
Resetting the amplitude will return the attenuators to their normal position.
The $ATN? query returns the current attenuator position.
$FCL
The $FCL command recalls the factory calibration bytes. This command will
generate an error if calibration is not enabled.
$MDC i
The $MDC command sets the mimic DAC to the value i (0 to 255). If the
DS345 has modulation enabled this command will have no effect.
$WRD (?) j{,k}
The $WRD command sets the value of calibration word j to k. Parameter j
may have a value from 0 to 509, while k may range from -32768 to +32767.
This command will generate an error if calibration is not enabled.
NOTE:
this
command will alter the calibration of the the DS345. To correct the calibra-
tion the factory calibration bytes may be recalled (see the $FCL command).