HP8643 emulation mode
1GP71_0E 129 Rohde & Schwarz
• TSWeep Subsystem
Status Command / Function / Remark / Limitation
TSWeep
Start a continuous or single sweep.
Table 125: TSWeep subsystem commands
• VMETer Subsystem
Status Command / Function / Remark / Limitation
VMETer[:VOLTage]?
VMETer:MODE value
Table 126: VMETer subsystem commands
Instrument initialisation
The (factory) default setting of the HP8643 is applied and activated when
o applying the DCL, SDC to the GPIB interface.
o transmitting the *RST command
o transmitting the first command after activating this emulation mode.
During initialisation, the emulated instrument (HP8643, HP8644, HP8645)
applies and activates the setting, which was active just before power down.
The SM* however applies and activates the (factory) default setting of the
HP8643 / HP8644 / HP8645.
This different behaviour has to be taken in consideration.
It is strongly recommended to explicitly setup all necessary parameters
by applying the corresponding command.
The following table shows the (factory) default setting, applied by the SM*’s
emulation software.
Subsystem Default setting
AM DEPTH = 0.0 PCT
DEPTH STEP = 1.0 PCT
STATE = OFF
SOURCE = INTERNAL
COUPLING = DC
INTERAL
AMPLITUDE LEVEL = -140.DBM
STEP = 10.0 DB
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