R&S®SML / R&S®SMV03 Brief Instructions
1090.3123.12 E-6 5.1
5 Remote Control – Basic Information
This chapter provides basic information on remote control, for example on the IEC/IEEE bus, RS-232-C
interface, interface and device messages, command processing, status reporting system, etc.
The instrument is equipped with an IEC/IEEE-bus interface according to standard IEC 625.1/IEEE 488.1
and a RS-232-C interface. The connectors are located at the rear of the instrument and permit to
connect a controller for remote control. The instrument supports the SCPI version 1994.0 (S
tandard
C
ommands for Programmable Instruments). The SCPI standard is based on standard IEEE 488.2 and
aims at the standardization of device-specific commands, error handling and the status registers.
For this section it is assumed that the user has basic knowledge of IEC/IEEE-bus programming and
operation of the controller. A description of the interface commands will be found in the relevant
manuals.
The requirements of the SCPI standard regarding command syntax, error handling and configuration of
the status registers are explained in detail in the respective sections. Tables provide a fast overview of
the bit assignment of the status registers. The tables are complemented by a comprehensive
description of the status registers.
A description of commands is given in chapter 6. Programming examples for the main functions will be
found in chapter 7.
Brief Instructions
The short and simple operating sequence given below permits fast putting into operation of the
instrument and setting of its basic functions.
IEC/IEEE Bus
It is assumed that the IEC/IEEE-bus address, which is factory-set to 28, has not been changed.
1. Connect the instrument and the controller using the IEC/IEEE-bus cable.
2. Write and start the following program on the controller:
CALL IBFIND("DEV1", generator%) Open port to instrument
CALL IBPAD(generator%, 28) Transfer instrument address to controller
CALL IBWRT(generator%, "*RST;*CLS") Reset instrument
CALL IBWRT(generator%, "FREQ 1GHz") Set frequency to 1 GHz
CALL IBWRT(generator%, "POW -7.3dBm") Set output level to –7.3 dBm
CALL IBWRT(generator%, "OUTP:STAT ON") Switch RF output on
CALL IBWRT(generator%, "AM:SOUR INT") Set AM modulation source Lfgen
CALL IBWRT(generator%, "AM:INT:FREQ 15kHz")Set AM modulation frequency to 15 kHz
CALL IBWRT(generator%, "AM 30PCT") Set AM modulation depth to 30%
CALL IBWRT(generator%, "AM:STAT ON")
Switch on AM
An amplitude-modulated signal is now present at the output of the instrument.
3. To return to manual control, press the [LOCAL] key on the front panel.
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