GPIB OPERATION
3-2-15
ILS
(Instrument Landing System)
mode
SDM
Set Sum of Depth of Modulation (short form)
:DEPTH
:INC
Set SDM Depth
Set SDM step size
Data type :
Decimal Numeric Program Data
Allowed suffices :
PCT
Default suffix :
PCT
:UP
:DN
:RETN
:XFER
Go UP one step
Go DOWN one step
Return to original setting
Transfer current value to be the new setting
Data type :
None
Allowed suffices :
None
Default suffix :
None
Example:
SDM:DEPTH 40PCT;INC 2;UP;UP;UP
:PHASE
Specify the phase relationship between the 90 Hz and 150 Hz
tones.
Data type :
Character Program Data (any one of SIN_SIN, COS_COS or
SIN_COS).
Allowed suffices :
None
Default suffix :
None
Example:
SDM:PHASE SIN_COS
SDM?
Prepares messages containing information on SDM in the
following format:
:SDM:DEPTH <nr2>;INC <nr2>
Example:
:SDM:DEPTH 40.0;INC 0.5
SDM:PHASE?
Prepares messages containing information on the phase
relationship between the 90 Hz and 150 Hz tones in the format:
:SDM:PHASE <char>
Example:
:SDM:PHASE SIN_COS
DDM90
Set Difference in Depth of Modulation with 90 Hz tone
predominant (short form)
:DEPTH
Set DDM90 Depth
DDM150
Set Difference in Depth of Modulation with 150 Hz tone
predominant (short form)
:DEPTH
Set DDM150 Depth
DDM90 or DDM150
:INC
Data type :
Decimal Numeric Program Data
Allowed suffices :
PCT
Default suffix :
None
Note...
When there is no suffix it is assumed that the entry is in
DDM index (%/100).
