R&S NRP
Remote Control - Fundamentals
1144.1400.12 5.1
E-3
5 Remote Control - Fundamentals
The Power Meter R&S NRP is equipped with an interface that can be connected to a controller for
remote control.
•
IEC/IEEE-bus interface (standard equipment) in line with the standards IEC 60625.1 (IEEE 488.1)
and IEC 60625.2 (IEEE 488.2)
•
Ethernet 10/100 BASE T interface.
•
USB interface for remote control and firmware update.
Connectors are installed at the rear of the power meter. The two interfaces support the SCPI (Standard
Commands for Programmable Instruments) standard, version 1999.0 of May 1999. The SCPI standard
is based on the IEEE 488.2 standard and defines a standardized command language for controlling
measuring and test instruments with functions beyond the scope of the IEEE 488.2 standard. In addition
to the commands, error handling and status management are also described.
The present Chapter explains the differences between remote control and manual control, familiarizes
the user with fundamentals of remote control and describes the status reporting system as well as the
procedure for connecting a PC for remote control.
Differences between Remote Control and Manual Control
The manual control of the R&S NRP is designed for ergonomic operation. This means, among other
things, that certain parameters are assigned default values that cannot be changed and that specific
changes of device settings influence other settings. In the remote control mode, all settings can be
changed and the user has to make sure that the device is correctly set for the measurement to be
performed. We therefore recommend performing a reset (
*RST or
Æ
SYSTem:PRESet
,
page
6.98
) prior to a remote control measurement so that the device is placed in a defined state.
Display
In the REMOTE mode, the display of measured values can be disabled (
SYSTem:SPEed FAST
); the
display is cleared except for a status line at the top of the screen. Blanking of menu elements that need
not be continually updated increases the data processing speed. The display can be reactivated with
the SCPI command
SYSTem:SPEed NORMal.
The backlighting can also be completely switched off
with
DISPlay:ILLumination OFF
.
In the remote mode, the menu line at the upper screen edge is blanked and replaced by the indication
"Remote Mode". The SCPI error queue can be displayed using the topmost softkey (labelled "Error
List..."). If the LLO character is displayed in the upper status line, the keyboard including
(ESC/LOCAL)
has been disabled via the
LLO
command
.
In this case, returning to local mode is only possible with the
remote control command
GTL
or by a power-on reset.
