Keysight E6610A, Руководство пользователя и программирования

Страница: 95 / 108

12 SCPI Command Reference
Keysight E6610A User and Programming Guide 95
TRIGger:SYNC:IN:DELay [0] Sets a delay on the airframe trigger
output in mS. Can be set to a value
between 0 to 10mS
TRIGger:REF:PRESent? Queries if an external 10 MHz reference
input signal is present at the 10M-IN BNC
connector on the rear panel. Result is
either "No signal present" or "Signal
present".
TRIGger:REF:SOURce AUTO|EXT|INT Sets the source for the 10 MHz reference
to Internal, External or auto select.
Default value is AUTO. Auto select will
default to Internal unless it detects the
presence of an external reference, at
which point it will use the external
reference.
TRIGger:REF:SOURce? Queries the reference source setting for
the 10 MHz reference. Result is "manual"
if the reference source is set to Internal or
External, or "auto" if it's set to auto-select.
Example Sequence of SCPI commands for E6610A set-up and
Measurement
Below is an annotated sequence of SCPI commands that can be used to configure an
E6610A and carry out measurements. This is given to provide a simple example of
how to use the commands. If further examples are required a full worked example,
written in Visual Basic is included in the Appendix.
E6610A Configuration
Initial connection and configuration:
1. CONTrol:INSTrument:IPADdress 192.168.1.76-> Specifies the IP address of
the E6610A to be controlled.
2. CONTrol:INSTrument:CONNect-> Establishes connection to specified
E6610A.
3. SOURce1:CPRI:LINErate 4-> Sets the E6610A’s CPRI line rate to 4.
4. SOURce:PLAYback:STATe OFF-> Turns off all playback. This is required
before configuring the E6610A.
5. CONFigure:RAT:TYPE LTE-> Sets the radio access technology to LTE.
6. CONFigure:RAT:BW 10,CONSECUTIVE-> Sets the E6610A to 10 MHz band-
width, and the IQ mapping to consecutive.
7. CONFigure:RAT:MODE TDD-> Sets the mode to LTE TDD.