Dm

SCPI Commands :

[SOURce<HW>]:BB:DM:CODing
[SOURce<HW>]:BB:DM:FORMat
[SOURce<HW>]:BB:DM:MDELay
[SOURce<HW>]:BB:DM:PRESet
[SOURce<HW>]:BB:DM:SLENgth
[SOURce<HW>]:BB:DM:SOURce
[SOURce<HW>]:BB:DM:SRATe
[SOURce<HW>]:BB:DM:STATe
Commands in total: 112
Subgroups: 20
Direct child commands: 8
get_coding() → DmCod[source]
# [SOURce<HW>]:BB:DM:CODing
value: enums.DmCod = driver.source.bb.dm.get_coding()

Selects the modulation coding.

Returns:

coding: OFF | DIFF | DPHS | DGRay | GRAY | GSM | NADC | PDC | PHS | TETRa | APCO25 | PWT | TFTS | INMarsat | VDL | EDGE | APCO25FSK | ICO | CDMA2000 | WCDMA | APCO258PSK OFF The coding is automatically disabled if the selected modulation type is not possible with the coding that has been set. DPHS Phase Difference DGRay Difference + Gray

get_format_py() → BbDmModType[source]
# [SOURce<HW>]:BB:DM:FORMat
value: enums.BbDmModType = driver.source.bb.dm.get_format_py()

Sets the modulation type. When a standard is selected (method RsSmw.source.bb.dm.standard.value() ) , the modulation type is set to the default value.

Returns:

format_py: ASK | BPSK | P2DBpsk | QPSK | QPSK45 | OQPSk | P4QPsk | P4DQpsk | PSK8 | P8D8psk | P8EDge | QAM16 | QAM32 | QAM64 | QAM256 | QAM1024 | MSK | FSK2 | FSK4 | USER | FSKVar | QAM128 | QEDGe | QAM16EDge | QAM32EDge | AQPSk | QAM4096 | APSK16 | APSK32 | FSK32 | FSK64 | FSK8 | FSK16 | QAM512 | QAM2048

get_mdelay() → float[source]
# [SOURce<HW>]:BB:DM:MDELay
value: float = driver.source.bb.dm.get_mdelay()

No help available

get_slength() → int[source]
# [SOURce<HW>]:BB:DM:SLENgth
value: int = driver.source.bb.dm.get_slength()

Sets the sequence length of the waveform signal in symbols. The maximum number of symbols depends on the ARB memory and its installed option. The R&S SMW200A creates an ARB file with this length. The length equals the input sequence in symbols. It is not the length of the I/Q sequence after an upsampling. The product of the ‘Sequence Length’ * ‘Oversampling’ is limited by the maximum number of samples of the selected ARB.

Returns:

slength: integer Range: 1 to depends on options

get_source() → DmDataSourW[source]
# [SOURce<HW>]:BB:DM:SOURce
value: enums.DmDataSourW = driver.source.bb.dm.get_source()

Selects the data source.

Returns:

source: ZERO | ONE | PRBS | PATTern | DLISt | SERial A sequence of 0 or 1, a pseudo-random sequence with different length, a pattern, a data list, or external serial data.

get_state() → bool[source]
# [SOURce<HW>]:BB:DM:STATe
value: bool = driver.source.bb.dm.get_state()

Enables digital modulation. Switching on digital modulation turns off all the other digital standards in the same signal path.

Returns:

state: 1 | ON | 0| OFF

get_symbol_rate() → float[source]
# [SOURce<HW>]:BB:DM:SRATe
value: float = driver.source.bb.dm.get_symbol_rate()

Sets the symbol rate in Hz/kHz/MHz or sym/s, ksym/s and Msym/s.

Returns:

srate: float Range: 50 to depends on options, Unit: Hz or dym/s

preset() → None[source]
# [SOURce<HW>]:BB:DM:PRESet
driver.source.bb.dm.preset()

Sets the default settings for digital modulation (*RST values specified for the commands) . Not affected is the state set with the following command: SOURce<hw>:BB:DM:STATe

preset_with_opc(opc_timeout_ms: int = -1) → None[source]
# [SOURce<HW>]:BB:DM:PRESet
driver.source.bb.dm.preset_with_opc()

Sets the default settings for digital modulation (*RST values specified for the commands) . Not affected is the state set with the following command: SOURce<hw>:BB:DM:STATe

Same as preset, but waits for the operation to complete before continuing further. Use the RsSmw.utilities.opc_timeout_set() to set the timeout value.

Parameters:

opc_timeout_ms – Maximum time to wait in milliseconds, valid only for this call.

set_coding(coding: DmCod) → None[source]
# [SOURce<HW>]:BB:DM:CODing
driver.source.bb.dm.set_coding(coding = enums.DmCod.APCO25)

Selects the modulation coding.

Parameters:

coding – OFF | DIFF | DPHS | DGRay | GRAY | GSM | NADC | PDC | PHS | TETRa | APCO25 | PWT | TFTS | INMarsat | VDL | EDGE | APCO25FSK | ICO | CDMA2000 | WCDMA | APCO258PSK OFF The coding is automatically disabled if the selected modulation type is not possible with the coding that has been set. DPHS Phase Difference DGRay Difference + Gray

set_format_py(format_py: BbDmModType) → None[source]
# [SOURce<HW>]:BB:DM:FORMat
driver.source.bb.dm.set_format_py(format_py = enums.BbDmModType.APSK16)

Sets the modulation type. When a standard is selected (method RsSmw.source.bb.dm.standard.value() ) , the modulation type is set to the default value.

Parameters:

format_py – ASK | BPSK | P2DBpsk | QPSK | QPSK45 | OQPSk | P4QPsk | P4DQpsk | PSK8 | P8D8psk | P8EDge | QAM16 | QAM32 | QAM64 | QAM256 | QAM1024 | MSK | FSK2 | FSK4 | USER | FSKVar | QAM128 | QEDGe | QAM16EDge | QAM32EDge | AQPSk | QAM4096 | APSK16 | APSK32 | FSK32 | FSK64 | FSK8 | FSK16 | QAM512 | QAM2048

set_slength(slength: int) → None[source]
# [SOURce<HW>]:BB:DM:SLENgth
driver.source.bb.dm.set_slength(slength = 1)

Sets the sequence length of the waveform signal in symbols. The maximum number of symbols depends on the ARB memory and its installed option. The R&S SMW200A creates an ARB file with this length. The length equals the input sequence in symbols. It is not the length of the I/Q sequence after an upsampling. The product of the ‘Sequence Length’ * ‘Oversampling’ is limited by the maximum number of samples of the selected ARB.

Parameters:

slength – integer Range: 1 to depends on options

set_source(source: DmDataSourW) → None[source]
# [SOURce<HW>]:BB:DM:SOURce
driver.source.bb.dm.set_source(source = enums.DmDataSourW.DLISt)

Selects the data source.

Parameters:

source – ZERO | ONE | PRBS | PATTern | DLISt | SERial A sequence of 0 or 1, a pseudo-random sequence with different length, a pattern, a data list, or external serial data.

set_state(state: bool) → None[source]
# [SOURce<HW>]:BB:DM:STATe
driver.source.bb.dm.set_state(state = False)

Enables digital modulation. Switching on digital modulation turns off all the other digital standards in the same signal path.

Parameters:

state – 1 | ON | 0| OFF

set_symbol_rate(srate: float) → None[source]
# [SOURce<HW>]:BB:DM:SRATe
driver.source.bb.dm.set_symbol_rate(srate = 1.0)

Sets the symbol rate in Hz/kHz/MHz or sym/s, ksym/s and Msym/s.

Parameters:

srate – float Range: 50 to depends on options, Unit: Hz or dym/s

Cloning the Group

# Create a copy of the original group, that exists independently
dm_copy = driver.source.bb.dm.clone()

Subgroups