Rohde & Schwarz SMR20 User manual

1104.3430.19-01 1
Test and Measurement
Division
Operating Manual
MICROWAVE SIGNAL GENERATOR
SMR20
1104.0002.20
SMR27
1104.0002.27
SMR30
1104.0002.30
SMR40
1104.0002.40
Printed in the Federal
Republic of Germany

SMR Tabbed Divider Overview
1104.3430.12 RE E-1
Tabbed Divider Overview
Contents
Data Sheet
Safety Instructions
Certificate of Quality
EC Certificate of Conformity
List of R&S Representatives
Short Tutorial About How to Use the Manual
Divider
1 Chapter 1 Preparation for Use
2 Chapter 2 Introduction to Operation
3 Chapter 3 Manual Operation
4 Chapter 4 Functions
5 Chapter 5 Remote Control – Basics
6 Chapter 6 Remote Control – Commands
7 Chapter 7 Remote Control – Programming Examples
8 Chapter 8 Maintenance
9 Chapter 9 Error Messages
10 Chapter 10 Index

SMR Contents
1104.3430.12 3 E-1
Contents
1 Putting into Operation.........................................................................................1.1
General Instructions........................................................................................................................1.1
Unpacking the Instrument........................................................................................................1.1
Supply Voltage................................................................................................................................. 1.1
How to Ensure EMC......................................................................................................................... 1.1
Power Fuses..................................................................................................................................... 1.2
Switching On/Off the Instrument....................................................................................................1.2
Initial Status............................................................................................................................. 1.2
RAM With Battery Back-Up.............................................................................................................1.2
Preset Setting................................................................................................................................... 1.3
Functional Test ................................................................................................................................1.3
Mounting into a 19" Rack................................................................................................................ 1.3
Explanation of Front and Rear Panel.............................................................................................1.4
Elements of the Front Panel....................................................................................................1.4
Elements of the Rear Panel.....................................................................................................1.9
2 Short Tutorial.......................................................................................................2.1
Sample Setting for First Users ....................................................................................................... 2.1
3 Manual Operation................................................................................................3.1
Design of the Display ...................................................................................................................... 3.1
Basic Operating Steps..................................................................................................................... 3.2
Calling the menus....................................................................................................................3.2
Selection and Change of Parameters......................................................................................3.3
Quick Selection of Menu (QUICK SELECT)............................................................................3.4
Use of [FREQ] and [LEVEL] Keys...........................................................................................3.5
Use of [RF ON/OFF] and [MOD ON/OFF]............................................................................... 3.5
Changing Unit of Level ............................................................................................................3.5
Correction of Input...................................................................................................................3.6
List Editor......................................................................................................................................... 3.7
Select List................................................................................................................................ 3.8
Delete List................................................................................................................................3.8
Edit List ...................................................................................................................................3.9
SAVE/RECALL – Storing/Calling of Instrument Settings...........................................................3.14
Menu Summary.............................................................................................................................. 3.15

Contents SMR
1104.3430.12 4 E-1
4 Instrument Functions..........................................................................................4.1
RF Frequency................................................................................................................................... 4.1
Frequency Offset and Multiplier...............................................................................................4.2
RF Level............................................................................................................................................ 4.3
Level Offset .............................................................................................................................4.5
Non-Interrupting Level Setting.................................................................................................4.5
Switching On/Off Automatic Level Control (Alc)...................................................................... 4.6
User Correction (Ucor) ............................................................................................................4.8
[RF ON/OFF] Key....................................................................................................................4.9
Modulation - General..................................................................................................................... 4.10
Modulation Sources...............................................................................................................4.10
Simultaneous Modulation ......................................................................................................4.11
Mutual Switch-Off of Modulation Types.................................................................................4.11
[MOD ON/OFF] Key............................................................................................................... 4.12
Analog Modulation......................................................................................................................... 4.13
Amplitude Modulation............................................................................................................4.13
Frequency Modulation ...........................................................................................................4.14
Pulse Modulation...................................................................................................................4.15
Pulse Generator........................................................................................................4.16
LF Generator .........................................................................................................................4.18
Digital Modulations ASK and FSK................................................................................................ 4.19
LF Output........................................................................................................................................ 4.21
IF Input............................................................................................................................................ 4.22
PULSE/VIDEO Output....................................................................................................................4.23
Sweep.............................................................................................................................................. 4.25
Setting the Sweep Range (Start Freq, Stop Freq, Center Freq, Span).................................4.25
Selecting Linear/Logarithmic Sweep (Lin, Log Spacing)....................................................... 4.26
Operating Modes (Mode).......................................................................................................4.26
Sweep Inputs.........................................................................................................................4.27
Sweep Outputs......................................................................................................................4.27
RF Sweep..............................................................................................................................4.29
Level Sweep..........................................................................................................................4.31
LF Sweep...............................................................................................................................4.32
List Mode........................................................................................................................................ 4.34
Operating Modes (Mode).......................................................................................................4.34
Inputs/Outputs ....................................................................................................................... 4.35
Memory Sequence ......................................................................................................................... 4.38
Operating Modes (Mode).......................................................................................................4.38
External Trigger.....................................................................................................................4.39
Utilities............................................................................................................................................ 4.42
Display .................................................................................................................................4.42
System ................................................................................................................................. 4.42
IEC/IEEE-Bus Address (System - GPIB)..................................................................4.43
Parameters of RS-232-C Interface (System - RS232) .............................................4.44
Suppression of Indications and Clearing of Memories (System - Security)..............4.45
Indication of IEC/IEEE-Bus Language (System - Language) ...................................4.45

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1104.3430.12 5 E-1
Internal/External Reference Frequency (RefOsc) .................................................................4.46
Passwords for Accessing Protected Functions (Protect) ......................................................4.47
Calibration (Calib)..................................................................................................................4.48
Display of Module Versions (Diag - Config)...........................................................................4.49
Display of Voltages of Test Points (Diag-TPoint) ..................................................................4.50
Display of Service Data (Diag-Param)...................................................................................4.51
Test .................................................................................................................................4.52
Assigning Modulations to the [MOD ON/OFF] Key (ModKey)...............................................4.53
Setting the Auxiliary Inputs/Outputs (AUX-I/O)......................................................................4.54
Setup (Setup)......................................................................................................................... 4.55
Help System ................................................................................................................................... 4.56
Status.............................................................................................................................................. 4.56
5Remote Control – Basic Information ................................................................. 5.1
Brief Instructions............................................................................................................................. 5.1
IEC/IEEE Bus ..........................................................................................................................5.1
RS-232-C Interface..................................................................................................................5.2
Switchover to Remote Control.......................................................................................................5.3
Remote Control via IEC/IEEE Bus...........................................................................................5.3
Setting the Device Address......................................................................................... 5.3
Indications during Remote Control .............................................................................5.3
Return to Manual Operation........................................................................................5.4
Remote Control via RS-232-C Interface..................................................................................5.4
Setting the Transmission Parameters ........................................................................5.4
Indications during Remote Control .............................................................................5.4
Return to Manual Operation........................................................................................5.4
Messages.......................................................................................................................................... 5.5
Interface Messages.................................................................................................................5.5
Device Messages (Commands and Device Responses)........................................................5.5
Structure and Syntax of Device Messages ...................................................................................5.6
Introduction to SCPI................................................................................................................. 5.6
Structure of Commands .......................................................................................................... 5.6
Structure of Command Lines...................................................................................................5.9
Responses to Queries.............................................................................................................5.9
Parameters............................................................................................................................5.10
Overview of Syntax Elements................................................................................................5.12
Instrument Model and Command Processing ............................................................................5.13
Input Unit ...............................................................................................................................5.13
Command Recognition..........................................................................................................5.14
Data Set and Instrument Hardware.......................................................................................5.14
Status Reporting System.......................................................................................................5.14
Output Unit.............................................................................................................................5.15
Command Sequence and Command Synchronization..........................................................5.15
Status Reporting System.............................................................................................................. 5.16
Structure of an SCPI Status Register....................................................................................5.16
Overview of Status Registers ................................................................................................5.18

Contents SMR
1104.3430.12 6 E-1
Description of Status Registers .............................................................................................5.19
Status Byte (STB) and Service Request Enable Register (SRE) .............................5.19
IST Flag and Parallel Poll Enable Register (PPE).................................................... 5.20
Event Status Register (ESR) and Event Status Enable Register (ESE)...................5.20
STATus:OPERation-Register...................................................................................5.21
STATus:QUEStionable Register...............................................................................5.21
Use of Status Reporting System ...........................................................................................5.22
Service Request, Making Use of Hierarchy Structure ..............................................5.22
Serial Poll ................................................................................................................5.22
Parallel Poll...............................................................................................................5.23
Query by Means of Commands................................................................................ 5.23
Error Queue Query................................................................................................... 5.23
Reset Values of Status Reporting System ............................................................................5.24
Interfaces........................................................................................................................................5.25
IEC/IEEE-Bus Interface.........................................................................................................5.25
Characteristics of Interface.......................................................................................5.25
Bus Lines ................................................................................................................5.25
Interface Functions...................................................................................................5.26
Interface Messages ..................................................................................................5.27
RS-232-C Interface................................................................................................................5.28
Characteristics of Interface.......................................................................................5.28
Signal Lines ..............................................................................................................5.28
Transmission Parameters.........................................................................................5.29
Interface Functions...................................................................................................5.29
Handshake................................................................................................................5.30
6Remote Control – Description of Commands...................................................6.1
Notation ............................................................................................................................................6.1
Common Commands....................................................................................................................... 6.3
ABORt-System ................................................................................................................................. 6.6
DIAGnostic-System..........................................................................................................................6.7
DISPLAY-System..............................................................................................................................6.9
INPut-System.................................................................................................................................. 6.10
MEMory-System............................................................................................................................. 6.10
OUTPut-System.............................................................................................................................. 6.11
SOURce System............................................................................................................................. 6.13
SOURce:AM Subsystem .......................................................................................................6.13
SOURce:CORRection Subsystem ........................................................................................6.15
SOURce:DM Subsystem.......................................................................................................6.17
SOURce:FM Subsystem .......................................................................................................6.19
SOURce:FREQuency Subsystem.........................................................................................6.21
SOURce:LIST Subsystem.....................................................................................................6.24
SOURce:MARKer Subsystem...............................................................................................6.27
SOURce:POWer Subsystem................................................................................................. 6.29
SOURce:PULM Subsystem...................................................................................................6.32
SOURce:PULSe Subsystem .................................................................................................6.33
SOURce:ROSCillator Subsystem..........................................................................................6.34
SOURce:SWEep Subsystem ................................................................................................6.35

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1104.3430.12 7 E-1
SOURce2 System........................................................................................................................... 6.38
SOURce2:FREQuency Subsystem.......................................................................................6.38
SOURce2:FUNCtion Subsystem........................................................................................... 6.40
SOURce2:MARKer Subsystem.............................................................................................6.41
SOURce2:SWEep Subsystem ..............................................................................................6.42
STATus-System .............................................................................................................................6.44
SYSTem System............................................................................................................................. 6.46
TEST System.................................................................................................................................. 6.51
TRIGger System.............................................................................................................................6.52
List of Commands.......................................................................................................................... 6.56
7 Remote Control - Programming Examples .......................................................7.1
Including IEC-Bus Library for QuickBasic ....................................................................................7.1
Initialization and Default Status .....................................................................................................7.1
Initiate Controller......................................................................................................................7.1
Initiate Instrument....................................................................................................................7.1
Transmission of Instrument Setting Commands .........................................................................7.2
Switchover to Manual Control........................................................................................................ 7.2
Reading out Instrument Settings...................................................................................................7.2
List Management .............................................................................................................................7.3
Command synchronization............................................................................................................. 7.3
Service Request...............................................................................................................................7.4
Operating the Generator in the IEC-Bus Controller Mode........................................................... 7.6
8 Maintenance.........................................................................................................8.1
Cleaning the Outside.......................................................................................................................8.1
Storing and Packing........................................................................................................................ 8.1
9 Error Messages ...................................................................................................9.1
List of Error Messages....................................................................................................................9.2
SCPI-Specific Error Messages................................................................................................9.2
SMR-Specific Error Messages ................................................................................................9.6
10Index...................................................................................................................10.1

Contents SMR
1104.3430.12 8 E-1
Tables
Table 4-1 Input connectors for external modulation.....................................................................4.10
Table 4-2 Status messages for deviation from nominal at external modulation inputs................4.11
Table 4-3 Modulation types which cannot be active simultaneously............................................4.12
Table 4-4 List mode, typical list ....................................................................................................4.34
Table 4-5 Memory sequence; example of list...............................................................................4.38
Table 5-1 Synchronization by means of *OPC, *OPC? and *WAI................................................5.15
Table 5-2 Meaning of the bits used in the status byte..................................................................5.19
Table 5-3 Meaning of the bits used in the event status register...................................................5.20
Table 5-4 Resetting of instrument functions.................................................................................5.24
Table 5-5 Interface functions........................................................................................................5.26
Table 5-6 Universal commands....................................................................................................5.27
Table 5-7 Addressed commands .................................................................................................5.27
Table 5-8 Control characters for RS-232-C interface...................................................................5.29
Table 6-1 Common Commands.....................................................................................................6.3
Table 6-2 Device Response to *OPT? ...........................................................................................6.4