R&S SFM TV test transmitter
- class pymeasure.instruments.rohdeschwarz.sfm.SFM(adapter, name='Rohde&Schwarz SFM', **kwargs)
Bases:
SCPIMixin,InstrumentRepresents the Rohde&Schwarz SFM TV test transmitter interface for interacting with the instrument.
Note
The current implementation only works with the first system in this unit.
Further source extension for system 2-6 would be required.
The intermodulation subsystem is also not yet implemented.
- property R75_out
A bool property that controls the use of the 75R output (if installed)
Value
Meaning
False
50R output active (N)
True
75R output active (BNC)
refer also to chapter 3.6.5 of the manual
- property TV_country
A string property that controls the country specifics of the video/sound system to be used
Possible values are:
Value
Meaning
BG_G
BG General
DK_G
DK General
I_G
I General
L_G
L General
GERM
Germany
BELG
Belgium
NETH
Netherlands
FIN
Finland
AUST
Australia
BG_T
BG Th
DENM
Denmark
NORW
Norway
SWED
Sweden
GUS
Russia
POL1
Poland
POL2
Poland
HUNG
Hungary
CHEC
Czech Republic
CHINA1
China
CHINA2
China
GRE
Great Britain
SAFR
South Africa
FRAN
France
USA
United States
KOR
Korea
JAP
Japan
CAN
Canada
SAM
South America
Please confirm with the manual about the details for these settings.
- property TV_standard
A string property that controls the type of video standard
Possible values are:
Value
Lines
System
BG
625
PAL
DK
625
SECAM
I
625
PAL
K1
625
SECAM
L
625
SECAM
M
525
NTSC
N
625
NTSC
Please confirm with the manual about the details for these settings.
- property basic_info
A String property containing information about the hardware modules installed in the unit
- property beeper_enabled
A bool property that controls the beeper status,
refer also to chapter 3.6.8 of the manual
- calibration(number=1, subsystem=None)
Function to either calibrate the whole modulator, when subsystem parameter is omitted, or calibrate a subsystem of the modulator.
Valid subsystem selections: “NICam, VISion, SOUNd1, SOUNd2, CODer”
- channel_down_relative()
Decreases the output frequency to the next low channel/special channel based on the current country settings
- property channel_sweep_start
A float property controlling the start frequency for channel sweep in Hz
Minimum 5 MHz
Maximum 1 GHz
- property channel_sweep_step
A float property controlling the start frequency for channel sweep in Hz
Minimum 5 MHz
Maximum 1 GHz
- property channel_sweep_stop
A float property controlling the start frequency for channel sweep in Hz
Minimum 5 MHz
Maximum 1 GHz
- property channel_table
A string property controlling which channel table is used
Possible selections are:
Value
Meaning
DEF
Default channel table
USR1
User table No. 1
USR2
User table No. 2
USR3
User table No. 3
USR4
User table No. 4
USR5
User table No. 5
refer also to chapter 3.6.6.1 of the manual
- channel_up_relative()
Increases the output frequency to the next higher channel/special channel based on the current country settings
- coder_adjust()
Starts the automatic setting of the differential deviation
refer also to chapter 3.6.6.4 of the manual
- property coder_id_frequency
A int property that controls the frequency of the identification of the coder
valid range 0 .. 200 Hz
- property coder_modulation_degree
A float property that controls the modulation degree of the identification of the coder
valid range: 0 .. 0.9
- property coder_pilot_deviation
A int property that controls deviation of the pilot frequency of the coder
valid range: 1 .. 4 kHz
- property coder_pilot_frequency
A int property that controls the pilot frequency of the coder
valid range: 40 .. 60 kHz
- property cw_frequency
A float property controlling the CW-frequency in Hz
Minimum 5 MHz
Maximum 1 GHz
- property date
A list property for the date of the RTC in the unit
- property event_reg
Content of the event register of the Status Operation Register refer also to chapter 3.6.7 of the manual
- property ext_ref_base_unit
A bool property for the external reference for the basic unit
Value
Meaning
False
Internal 10 MHz is used
True
External 10 MHz is used
- property ext_ref_extension
A bool property for the external reference for the extension frame
Value
Meaning
False
Internal 10 MHz is used
True
External 10 MHz is used
- property ext_vid_connector
A string property controlling which connector is used as the input of the video source
Possible selections are:
Value
Meaning
HIGH
Front connector - Hi-Z
LOW
Front connector - 75R
REAR1
Rear connector 1
REAR2
Rear connector 2
AUTO
Automatic assignment
- property external_modulation_frequency
A int property that controls the setting for the external modulator frequency
valid range: 32 .. 46 MHz
- property external_modulation_power
A int property that controls the setting for the external modulator output power
valid range: -7..0 dBm
refer also to chapter 3.6.6.5 of the manual
- property external_modulation_source
A bool property for the modulation source selection
refer also to chapter 3.6.6.8 of the manual
- property frequency
A float property controlling the frequency in Hz
Minimum 5 MHz
Maximum 1 GHz
- property frequency_mode
A string property controlling which the unit is used in
Possible selections are:
Value
Meaning
CW
Continuous wave mode
FIXED
fixed frequency mode
CHSW
Channel sweep
RFSW
Frequency sweep
Note
selecting the sweep mode, will start the sweep imemdiately!
- property gpib_address
A int property that controls the GPIB address of the unit
valid range: 0..30
- property high_frequency_resolution
A property that controls the frequency resolution,
Possible selections are:
Value
Meaning
False
Low resolution (1000Hz)
True
High resolution (1Hz)
- property level
A float property controlling the output level in dBm,
Minimum -99dBm
Maximum 10dBm (depending on output mode)
refer also to chapter 3.6.6.2 of the manual
- property level_mode
A string property controlling the output attenuator and linearity mode
Possible selections are:
Value
Meaning
max. output level
NORM
Normal mode
+6 dBm
LOWN
low noise mode
+10 dBm
CONT
continuous mode
+10 dBm
LOWD
low distortion mode
+0 dBm
Contiuous mode allows up to 14 dB of level setting without use of the mechanical attenuator.
- property lower_sideband_enabled
A bool property that controls the use of the lower sideband
refer also to chapter 3.6.6.10 of the manual
- property modulation_enabled
A bool property that controls the modulation status
- property nicam_IQ_inverted
A bool property that controls if the NICAM IQ signals are inverted or not
Value
Meaning
False
normal (IQ)
True
inverted (QI)
- property nicam_additional_bits
A int property that controls the additional data in the NICAM modulator
valid range: 0 .. 2047
- property nicam_audio_frequency
A int property that controls the frequency of the internal sound generator
valid range: 0 Hz .. 15 kHz
- property nicam_audio_volume
A float property that controls the audio volume in the NICAM modulator in dB
valid range: 0..60 dB
- property nicam_bit_error_enabled
A bool property that controls the status of an artificial bit error rate to be applied
- property nicam_bit_error_rate
A float property that controls the artificial bit error rate.
valid range: 1.2E-7 .. 2E-3
- property nicam_carrier_enabled
A bool property that controls if the NICAM carrier is switched on or off
- property nicam_carrier_frequency
A float property that controls the frequency of the NICAM carrier
valid range: 33.05 MHz +/- 0.2 Mhz
- property nicam_carrier_level
A float property that controls the value of the NICAM carrier
valid range: -40 .. -13 dB
- property nicam_control_bits
A int property that controls the additional data in the NICAM modulator
valid range: 0 .. 3
- property nicam_data
A int property that controls the data in the NICAM modulator
valid range: 0 .. 2047
- property nicam_intercarrier_frequency
A float property that controls the inter-carrier frequency of the NICAM carrier
valid range: 5 .. 9 MHz
- property nicam_mode
A string property that controls the signal type to be sent via NICAM
Possible values are:
Value
Meaning
MON
Mono sound + NICAM data
STER
Stereo sound
DUAL
Dual channel sound
DATA
NICAM data only
refer also to chapter 3.6.6.6 of the manual
- property nicam_preemphasis_enabled
A bool property that controls the status of the J17 preemphasis
- property nicam_source
A string property that controls the signal source for NICAM
Possible values are:
Value
Meaning
INT
Internal audio generator(s)
EXT
External audio source
CW
Continuous wave signal
RAND
Random data stream
TEST
Test signal
- property nicam_test_signal
A int property that controls the selection of the test signal applied
Value
Meaning
1
Test signal 1 (91 kHz square wave, I&Q 90deg apart)
2
Test signal 2 (45.5 kHz square wave, I&Q 90deg apart)
3
Test signal 3 (182 kHz sine wave, I&Q in phase)
- property normal_channel
A int property controlling the current selected regular/normal channel number valid selections are based on the country settings.
- property operation_enable_reg
Content of the enable register of the Status Operation Register
Valid range: 0…32767
- property output_voltage
A float property controlling the output level in Volt,
Minimum 2.50891e-6, Maximum 0.707068 (depending on output mode) refer also to chapter 3.6.6.12 of the manual
- property questionable_event_reg
Content of the event register of the Status Questionable Operation Register
- property questionable_operation_enable_reg
Content of the enable register of the Status Questionable Operation Register
Valid range 0…32767
- property questionanble_status_reg
Content of the condition register of the Status Questionable Operation Register
- property remote_interfaces
A string property controlling the selection of interfaces for remote control
Possible selections are:
Value
Meaning
OFF
no remote control
GPIB
GPIB only enabled
SER
RS232 only enabled
BOTH
GPIB & RS232 enabled
- property rf_out_enabled
A bool property that controls the status of the RF-output
- property rf_sweep_center
A float property controlling the center frequency for sweep in Hz
Minimum 5 MHz
Maximum 1 GHz
- property rf_sweep_span
A float property controlling the sweep span in Hz,
Minimum 1 kHz
Maximum 1 GHz
- property rf_sweep_start
A float property controlling the start frequency for sweep in Hz
Minimum 5 MHz
Maximum 1 GHz
- property rf_sweep_step
A float property controlling the stepwidth for sweep in Hz,
Minimum 1 kHz
Maximum 1 GHz
- property rf_sweep_stop
A float property controlling the stop frequency for sweep in Hz
Minimum 5 MHz
Maximum 1 GHz
- property scale_volt
A string property that controls the unit to be used for voltage entries on the unit
Possible values are: AV,FV, PV, NV, UV, MV, V, KV, MAV, GV, TV, PEV, EV, DBAV, DBFV, DBPV, DBNV, DBUV, DBMV, DBV, DBKV, DBMAv, DBGV, DBTV, DBPEv, DBEV
refer also to chapter 3.6.9 of the manual
- property serial_baud
A int property that controls the serial communication speed ,
Possible values are: 110,300,600,1200,4800,9600,19200
- property serial_bits
A int property that controls the number of bits used in serial communication
Possible values are: 7 or 8
- property serial_flowcontrol
A string property that controls the serial handshake type used in serial communication
Possible values are:
Value
Meaning
NONE
no flow-control/handshake
XON
XON/XOFF flow-control
ACK
hardware handshake with RTS&CTS
- property serial_parity
A string property that controls the parity type used for serial communication
Possible values are:
Value
Meaning
NONE
no parity
EVEN
even parity
ODD
odd parity
ONE
parity bit fixed to 1
ZERO
parity bit fixed to 0
- property serial_stopbits
A int property that controls the number of stop-bits used in serial communication,
Possible values are: 1 or 2
- property sound_mode
A string property that controls the type of audio signal
Possible values are:
Value
Meaning
MONO
MOnoaural sound
PIL
pilot-carrier + mono
BTSC
BTSC + mono
STER
Stereo sound
DUAL
Dual channel sound
NIC
NICAM + Mono
- property special_channel
A int property controlling the current selected special channel number valid selections are based on the country settings.
- property status_info_shown
A bool property that controls if the display shows information during remote control
- status_preset()
partly resets the SCPI status reporting structures
- property status_reg
Content of the condition register of the Status Operation Register
- property subsystem_info
A String property containing information about the system configuration
- property system_number
A int property for the selected systems (if more than 1 available)
Minimum 1
Maximum 6
- property time
A list property for the time of the RTC in the unit
- property vision_average_enabled
A bool property that controls the average mode for the vision system
- property vision_balance
A float property that controls the balance of the vision modulator
valid range: -0.5 .. 0.5
- property vision_carrier_enabled
A bool property that controls the vision carrier status
refer also to chapter 3.6.6.9 of the manual
- property vision_carrier_frequency
A float property that controls the frequency of the vision carrier
valid range: 32 .. 46 MHz
- property vision_clamping_average
A float property that controls the operation point of the vision modulator
valid range: -0.5 .. 0.5
- property vision_clamping_enabled
A bool property that controls the clamping behavior of the vision modulator
- property vision_clamping_mode
A string property that controls the clamping mode of the vision modulator
Possible selections are HARD or SOFT
- property vision_precorrection_enabled
A bool property that controls the precorrection behavior of the vision modulator
- property vision_residual_carrier_level
A float property that controls the value of the residual carrier
valid range: 0 .. 0.3 (30%)
- property vision_sideband_filter_enabled
A bool property that controls the use of the VSBF (vestigal sideband filter) in the vision modulator
- property vision_videosignal_enabled
A bool property that controls if the video signal is switched on or off
- class pymeasure.instruments.rohdeschwarz.sfm.Sound_Channel(instrument, number)
Bases:
objectClass object for the two sound channels
refer also to chapter 3.6.6.7 of the user manual
- property carrier_enabled
A bool property that controls if the audio carrier is switched on or off
- property carrier_frequency
A float property that controls the frequency of the sound carrier
valid range: 32 .. 46 MHz
- property carrier_level
A float property that controls the level of the audio carrier in dB relative to the vision carrier (0dB)
valid range: -34 .. -6 dB
- property deviation
A int property that controls deviation of the selected audio signal
valid range: 0 .. 110 kHz
- property frequency
A int property that controls the frequency of the internal sound generator
valid range: 300 Hz .. 15 kHz
- property modulation_degree
A float property that controls the modulation depth for the audio signal (Note: only for the use of AM in Standard L)
valid range: 0 .. 1 (100%)
- property modulation_enabled
A bool property that controls the audio modulation status
Value
Meaning
False
modulation disabled
True
modulation enabled
- property preemphasis_enabled
A bool property that controls if the preemphasis for the audio is switched on or off
- property preemphasis_time
A int property that controls if the mode of the preemphasis for the audio signal
Value
Meaning
50
50 us preemphasis
75
75 us preemphasis
- property use_external_source
A bool property for the audio source selection
Value
Meaning
False
Internal audio generator(s)
True
External signal source
- values(command, **kwargs)
Reads a set of values from the instrument through the adapter, passing on any keyword arguments.