3 Input/Output Functions
Input/Output
to Sense and there is a valid external reference present) this information is used by the analyzer to
determine the internal settings needed to lock to that particular external reference signal.
For the instrument to stay locked, the value entered must be within 5 ppm of the actual external reference
frequency. So it is important to get it close, or you risk an unlock condition.
Note that this value only affects the instrument’s ability to lock. It does not affect any calculations or
measurement results. See "Freq Offset" in the Frequency section for information on how to offset
frequency values.
Key Path
Input/Output, Freq Ref In
Remote Command
[:SENSe]:ROSCillator:EXTernal:FREQuency <freq>
[:SENSe]:ROSCillator:EXTernal:FREQuency?
Example
ROSC:EXT:FREQ 20 MHz sets the external reference frequency to 20 MHz, but does not select the
external reference.
ROSC:SOUR:TYPE EXT selects the external reference.
Dependencies
Still available with Internal or Pulse selected, to allow setup for when External is in use. However, the
setting has no effect if the Internal Reference is in use (Freq Ref In set to Internal, Pulse, or
SENSE:INT or SENSE:PULSE).
Preset
This is unaffected by a Preset but is set to 10 MHz on a "Restore Input/Output Defaults" or "Restore
System Defaults->All"
Default Unit
Hz
Initial S/W Revision
Prior to A.02.00
Modified at S/W Revision
A.14.00
RF Output & Test Set Config
The RF Output & Test Set Config key allows you to set the RF Output Port and multiport adapter unit which
is connected to the instrument by USB for download of calibration data and additional control.
This menu also allows you to set Trigger Config which is used to set the input/output type of the 4 Bi-
directional Trigger ports.
Key Path
Input/Output
Preset
All settings under this key are returned to their default state when
Restore Input/Output Defaults
is
pressed.
State Saved
Saved in State
Initial S/W Revision
A.09.49
RF Output
Specifies the RF Output Port used.
Switching from the RF Output port to one of the RFIO ports changes the transmitter performance of the
instrument.
Sequence Analyzer User's & Programmer's Reference
117
Содержание E6650A EXF
Страница 34: ...1 About the Test Set Mouse and Keyboard Control 34 Sequence Analyzer User s Programmer s Reference...
Страница 94: ...2 Programming the Test Set Common Commands 94 Sequence Analyzer User s Programmer s Reference...
Страница 129: ...4 Mode Functions Undefined variable Primary ProductName Sequence Analyzer User s Programmer s Reference 129...
Страница 145: ...5 System Functions Undefined variable Primary ProductName Sequence Analyzer User s Programmer s Reference 145...
Страница 206: ...5 System Functions System 206 Sequence Analyzer User s Programmer s Reference...
Страница 214: ...6 List Sequence Measurements File File See File on page 146 214 Sequence Analyzer User s Programmer s Reference...
Страница 474: ...6 List Sequence Measurements Mode Mode See Mode on page 130 474 Sequence Analyzer User s Programmer s Reference...
Страница 478: ...6 List Sequence Measurements Print Print See Print on page 151 478 Sequence Analyzer User s Programmer s Reference...
Страница 642: ...6 List Sequence Measurements System System See System on page 152 642 Sequence Analyzer User s Programmer s Reference...