Rohde & Schwarz SMC100A - Switching to Remote Control

Remote Control Basics
R&S
®
SMC100A
199Operating Manual 1411.4060.32 ─ 09
Instrument Address
In order to operate the instrument via remote control it must be addressed using the
defined interface address. See Chapter 6.1.3, "LAN Interface", on page 192, Chap-
ter 6.1.4, "USB Interface", on page 195, Chapter 6.1.5, "Serial Interface", on page 196
or Chapter 6.1.6, "GPIB Interface (IEC/IEEE Bus Interface)", on page 196 for details.
The VISA resource strings are indicated in the "Setup > Remote Channel Settings"
menu.
Securing the display
To prevent unauthorized personnel from reading the display, you can disable the fre-
quency and level display explicitly. This is useful when you remotely control the instru-
ment from a different location.
For information on how to disable the frequency and level display, refer to "Annotation
Frequency" on page 103 and "Annotation Amplitude" on page 103.
Refer to Chapter 6.2.3, "Examples", on page 200 for practical examples on setting up
of a remote control link and starting of a remote control session.
6.2.1 Switching to Remote Control
After switching on, the instrument is usually in the local state and can be operated via
the front panel controls (for instruments equipped with a display), a mouse and an
external keyboard.
Starting remote control
1. Send a command from a controller to the instrument.
The instrument changes to remote state as soon as it receives the command from
the controller.
Note: If you have sent &NREN before, the automatic transition from local state to
manual control by a subsequent remote command is disabled (use &GTR to enable
it again).
In remote state, operation via the front panel or via mouse and keyboard is dis-
abled. The status line indicates the "REMOTE" state.
The instrument remains in the remote state until it is reset to the local state, see
Chapter 6.2.2, "Returning to Manual Operation", on page 200).
Tip: Switching from manual operation to remote control and vice versa does not
affect the other instrument settings.
2. Although operation via front panel, mouse and keyboard is disabled, the dialog
boxes can still be opened, for example to verify settings. The buttons and setting
fields are grayed out and cannot be activated.
Additionally, you can disable the access to the dialogs with the command
SYST:KLOC ON to protect the instrument against unauthorized readings.
Starting a Remote Control Session