Anritsu MG3641A User manual

Document No.: M-W1389AE-5.0
ANRITSU CORPORATION
MG3641A/MG3642A
Synthesized Signal Generator
Option 23: Pattern Generator
Operation Manual
Fifth Edition
•For safety and warning information, please read this
manual before attempting to use the equipment.
•Additional safety and warning information is provided
within the MG3641A/MG3642A Synthesized Signal
Generator Operation Manual. Please also refer to this
document before using the equipment.
•Keep this manual with the equipment.

ii
Safety Symbols
To prevent the risk of personal injury or loss related to equipment malfunction, Anritsu Corporation uses the following
safety symbols to indicate safety-related information. Ensure that you clearly understand the meanings of the
symbols BEFORE using the equipment. Some or all of the following symbols may be used on all Anritsu
equipment. In addition, there may be other labels attached to products that are not shown in the diagrams in this
manual.
Symbols used in manual
This indicates a very dangerous procedure that could result in serious injury or
death if not performed properly.
This indicates a hazardous procedure that could result in serious injury or death if
not performed properly.
This indicates a hazardous procedure or danger that could result in light-to-severe
injury, or loss related to equipment malfunction, if proper precautions are not taken.
Safety Symbols Used on Equipment and in Manual
The following safety symbols are used inside or on the equipment near operation locations to provide information
about safety items and operation precautions. Ensure that you clearly understand the meanings of the symbols
and take the necessary precautions BEFORE using the equipment.
This indicates a prohibited operation. The prohibited operation is indicated
symbolically in or near the barred circle.
This indicates an obligatory safety precaution. The obligatory operation is
indicated symbolically in or near the circle.
This indicates a warning or caution. The contents are indicated symbolically in or
near the triangle.
This indicates a note. The contents are described in the box.
These indicate that the marked part should be recycled.
MG3641A/MG3642A
Synthesized Signal Generator Option 23: Pattern Generator
Operation Manual
5 March 1998 (First Edition)
21 September 2006 (Fifth Edition)
Copyright © 1998-2006, ANRITSU CORPORATION.
All rights reserved. No part of this manual may be reproduced without the prior written permission of the
publisher.
The contents of this manual may be changed without prior notice.
Printed in Japan
DANGER
WARNING
CAUTION

iii
Notes On Export Management
This product and its manuals may require an Export License/Approval by
the Government of the product's country of origin for re-export from you
r
country.
Before re-exporting the product or manuals, please contact us to confirm
whether they are export-controlled items or not.
When you dispose of export-controlled items, the products/manuals need
to be broken/shredded so as not to be unlawfully used for military purpose.

iv
CE Conformity Marking
Anritsu affixes the CE Conformity marking on the following product(s) in
accordance with the Council Directive 93/68/EEC to indicate that they
conform to the EMC and LVD directive of the European Union (EU).
CE marking
1. Product Model
Option: MG3641A/MG3642A-23 Pattern Generator
2. Applied Directive and Standards
When the MG3641A/MG3642A-23 Pattern Generator is installed in
the MG3641A/MG3642A, the applied directive and standards of this
unit conform to those of the MG3641A/MG3642A main frame.
PS: About main frame
Please contact Anritsu for the latest information on the main frame
types that MG3641A/MG3642A-23 can be used with.

v
C-tick Conformity Marking
Anritsu affixes the C-tick marking on the following product(s) in
accordance with the regulation to indicate that they conform to the EMC
framework of Australia/New Zealand.
C-tick marking
1. Product Model
Option: MG3641A/MG3642A-23 Pattern Generator
2. Applied Directive and Standards
When the MG3641A/MG3642A-23 Pattern Generator is installed in
the MG3641A/MG3642A, the applied directive and standards of this
unit conform to those of the MG3641A/MG3642A main frame.
PS: About main frame
Please contact Anritsu for the latest information on the main frame
types that MG3641A/MG3642A-23 can be used with.

vi

I
Table of Contents
Table of Contents................................................... I
Section 1 Overview ............................................... 1
1.1 Product Overview ....................................................................... 1
1.2 Devices Configuration ................................................................ 1
1.3 Specifications ............................................................................. 2
Section 2 Preparation Before Use ....................... 3
2.1 Data and Clock Connectors Labeling ......................................... 3
2.2 Connection ................................................................................. 4
Section 3 Operation Overview ............................. 7
Section 4 Detailed Description ............................ 9
4.1 Delivery Mode ............................................................................. 9
4.2 Data Output Method ................................................................... 13
Section 5 Remote Control by GPIB ..................... 15
5.1 Overview ..................................................................................... 15
5.2 Command Tree ........................................................................... 15
5.3 Command Details ....................................................................... 17
5.4 Data Write Details....................................................................... 22
Appendix Initialization .......................................... 25

II.

1
Section 1 Overview
1.1 Product Overview
Pattern Generator is an optional device of the MG3641A/MG3642A Synthesized Signal Generator. It has four free
pattern memories into which data can be written via GPIB by using a personal computer and a fixed pattern memory that
generates PN9 and PN15 pseudo-random pattern and 0101-fixed pattern. It generates data patterns synchronized with the
internal clock generator frequency.
Besides, when no data pattern is delivered, the idle pattern can be delivered.
Various FSK modulated waves can be output by combining with the FSK encoder which is optionally built in MG3641A/
MG3642A. In addition, this Pattern Generator can be used as a modulated signal source of the optional built-in pulse
modulator.
1.2 Devices Configuration
The Pattern Generator configuration is as follows:
Table 1-1 Standard configuration
Item Model Name/Code Product Name Number of
Item (s)
Main Unit
Attachments
MG3641A/MG3642A-23
Z0351A
W1389AE
Pattern Generator
Label
Operation Manual
1
1
1
1.2 Devices Configuration

2
1.3 Specifications
The Pattern Generator specifications are as follow:
Table 1-2 Pattern Generator specifications
Data
pattern
Idle
pattern
Free
Number of memories
Memory capacity
Pattern delivery
range
Memory write
4 (Defind: 1 to 4)
524288 bit/memory
The first delivery address and the data bit length are specified for each free
pattern memory.
The first delivery address setting range: 00000 to 65535
Data bit length setting range: 2 to 524288 bit
(However, the last delivery address shall be 65535)
Write by 1 byte unit via GPIB
Write enabled when the Pattern Generator output is turned OFF or the idle
pattern is delivered.
PN9 pseudo-random pattern (complying with ITU-T V.52)
PN15 pseudo-random pattern (complying with ITU-T O.151)
“01010101” fixed pattern
1 (Idle)
524288 bit
The first delivery address and the data bit length are specified.
The first delivery address setting range: 00000 to 65535
Data bit length setting range: 2 to 524288 bit
(However, the last delivery address shall be 65535)
Write by 1 byte unit via GPIB
Write enabled when the Pattern Generator output is turned OFF.
Single: Specified data pattern is delivered once (either PN9 or PN15
is delivered twice).
Continuous: Specified data pattern is continuously delivered.
When no data pattern is delivered, the idle pattern is continuously deliv-
ered.
Range: 1 to 99,999 bps
Resolution: 1 bps
Accuracy: As same as the reference generator frequency of
MG3641A/MG3642A units.
1-bit NRZ output (corresponding to two values):
Sequentially output by 1-bit starting from the first bit into Data 2
1
Output.
The Data 2
0
Output logic is fixed to “0”.
2-bit NRZ output (corresponding to four values):
Sequentially output by 2-bits starting from the first bit into Data 2
1
Output
and Data 2
0
Output.
Data 2
0
Output: TTL level
Data 2
1
Output: TTL level
Clock Output: TTL level, rise
Fixed
Number of memories
Memory capacity
Pattern delivery range
Memory write
Delivery method
Send rate
Output method
Output level
Section 1 Overview

3
Section 2 Preparation Before Use
See Section 2 of the “MG3641A/MG3642A Operation Manual”for the installation environment conditions, the safety
measures, and preparations before the power turning ON.
The preparations for using the Pattern Generator are described here.
2.1 Data and Clock Connectors Labeling
Pattern Generator outputs data and clock signals by using the Int Mod Cont 1, 2, and 3 connectors on the MG3641A/
MG3642A rear panel. Each connector is allocated as follows:
Int Mod Cont
231
Data 21Data 20Clock
MG3641A/MG3642A Rear Panel
By sticking the attachment labels on near connectors, the erroneous wiring to the connectors can be prevented.
Place the labels above the Int Mod Cont connectors as follows so that they can easily be seen (when the FSK encoder is
implemented, stick its label adjacent to them):
Int Mod Cont
231
Data Pattern Generator
Data21(TTL) Data20(TTL) Clock(TTL)
2.1 Data and Clock Connectors Labeling

4
2.2 Connection
When both Pattern Generator and FSK Encoder are implemented, the Int Mod Cont connections are as follow:
DATA PATTERN GENERATOR
Output ON/OFF
Data 2
1
Output
Data 2
0
Output
Clock Output
Data 2
1
Input
Data 2
0
Input
Clock Input
FSK Encoder ON/OFF
FSK ENCODER
Int Mod Cont
(Rear Panel)
123
Section 2 Preparation Before Use

5
• In the case of combined use with FSK Encoder
Since the Pattern Generator data and clock signal output connectors are commonly used for the FSK Encoder data and
clock signal input connectors, the external coaxial cable connection is not necessary.
The Pattern Generator data and clock signal output connectors can be used for the monitor. However, when a long coaxial
cable that is terminated with a low impedance or not correctly terminated, the signals cannot be transferred correctly.
Avoid the signals collision by turning OFF the Pattern Generator output when the FSK modulation is performed by using
the external data generator, etc.
Also read the FSK Encoder Operation Manual as well if FSK modulation is to be performed.
• In case of use as modulated signal source of the pulse modulator
Connect the Int Mod Cont 1 connector allocated as the Pattern Generator data output Data 21to the Pulse Mod Input
connector by using a coaxial cable. Connect them in the shortest distance by using a coaxial cable that is firmly shielded
using for example a double-woven sheath.
In addition, set the pulse modulator input impedance to High (600 Ω).
MG3641A/MG3642A Rear Panel
Pulse Input Data 21Out
(
Int Mod Cont 1
)
2.2 Connection

6
Section 2 Preparation Before Use

7
Section 3 Operation Overview
This chapter provides an overview of the Pattern Generator operation. For a detailed description of each function, see
Section 4 “Detailed Descrption”.
#1 Press the “PG”[F1] key in “Main Menu (3/3)”to open the “Pattern Generator”menu.
PG
Main Menu (3/3)
#1
#2 Move the cursor by using “↓”[F2] key to select (inversely display) the item for the parameter selection and setting.
Output: The Pattern Generator output is turned ON/OFF. The “Sel”[F1] key is used for the selection.
Pattern: The delivery data pattern is selected. The free pattern (Defined: 1 to 4), the pseudo-random pattern
(PN9, PN15), or the 0101 repetition is selected by using the “Sel”[F1] key.
It cannot be changed during the data pattern delivery.
Send Mode: Send mode is selected from the one-time send (Single) or the repeating send (Continuous) by using the
“Sel”[F1] key.
It cannot be changed during the data pattern delivery.
Rate: Send rate is set. It is set by using the numeric keypad, the step key in the Edit zone, or the rotary knob.
In the case of setting with numeric keypad, the [Hz/uV] and [kHz/mV] unit keys are used for the bps and
kbsp keys, respectively.
Output Type: Data output method is selected from 1 bit NRZ output or 2 bit NRZ output by using the “Sel”[F1] key.
It cannot be changed when the Pattern Generator output is set to ON.
Sel ↓Conf Rtn
Pattern Generator
[Output]
[Pattern]
[Send Mode]
[Rate]
[Output Type]
ON
Defined: 1
Single
6400 bps
1 bit
This is not displayed
when the Pattern Generator output
is set to OFF.
#3#2
Section 3 Operation Overview

8
#3 Press the “Conf”[F4] key to open the “Configuration”menu and to set the first delivery address and the data bit
length of the free pattern and the idle pattern.
Move the cursor by using “↓”[F2], “↑”[F3], and “→”[F4] keys to select (inversely display) the first delivery
address and the data bit length of the free pattern and the idle pattern to be used. Set their values by using the numeric
keypad, the step key in the Edit zone, or the rotary knob. In the case of setting with numeric keypad, the input
numeric values are fixed by pressing one of the unit keys.
The first delivery address and the data bit length of the free pattern Defined: 1 to 4 cannot be set during the data
pattern delivery. Besides, the first delivery address and the data bit length of the idle pattern cannot be set when the
Pattern Generator output is set to ON.
And, the free pattern Defined: 1 to 4 can display each name which are consist of maximum eight letters. The name
is written by the GPIB interface.
↓ ↑ → Rtn
Configuration
1: TEST-1
2: TEST-2
3: TEST-3
4: ∗∗∗∗∗∗∗∗
Idle
12000
1120
100
65536
12000
00000
00000
00100
00000
00000
[Length][Top][Block]
#3 #4
#4 Press the “Rtn”[F5] key to return to the “Pattern Generator”menu.
#5 Press the “ ” [F3] key to start the data pattern delivery.
It becomes the delivery stop key displayed as “ ” during the data pattern delivery.
When the data pattern is not delivered (“ ” is displayed), the idle pattern is continuously delivered.
(There is a case that nothing is displayed at the [F3] key just after its operation. This is a state when the key operation
is temporarily invalid because of the delivery timing of the idle pattern or the data pattern. Wait for the “ ” or the
“ ” to be displayed and then perform the next key operation.)
Sel ↓Conf Rtn
Pattern Generator
[Output]
[Pattern]
[Send Mode]
[Rate]
[Output Type]
ON
Defined: 1
Single
6400 bps
1 bit
#5
Section 3 Operation Overview

9
Section 4 Detailed Description
The Pattern Generator function is described in detail.
4.1 Delivery Mode
The time charts of each delivery data patterns in both the Single and Continuous delivery modes are as follow:
(1) In case that the free pattern Defined: 1 to 4 is used as the delivery data pattern
When the Pattern Generator output is turned ON, the idle pattern is continuously delivered.
When the delivery operation is performed, the free pattern delivery starts just after the current idle pattern delivery is
finished.
In the Single mode, after the free pattern is delivered once, the idle pattern delivery is resumed.
In the Continuous mode, the free pattern delivery is repeated until the stop operation is performed. When the stop
operation is performed, the idle pattern delivery is resumed just after the current free pattern delivery is finished.
⋅⋅⋅⋅⋅ ⋅⋅⋅⋅⋅
⋅⋅⋅⋅⋅ ⋅⋅⋅⋅⋅
Idle Idle Idle Data Idle Idle Idle Idle
Idle Idle Idle Data Data Data Data Idle
Single
delivery operation
Continuous
delivery operation Stop operation
Data
Data bit length 6553500000
6553500000
First delivery address
Idle
Data bit length
First delivery address
Free pattern memory
Idle pattern memory
Defined: 1 to 4
4.1 Delivery Mode

10
Section 4 Detailed Description
(2) In case that the PN9 pseudo-random pattern is used as the delivery data pattern
When the Pattern Generator output is turned ON, the idle pattern is continuously delivered.
When the delivery operation is performed, the PN9 pseudo-random pattern delivery starts just after the current idle
pattern delivery is finished.
In the Single mode, after the PN9 pseudo-random pattern is delivered twice, the idle pattern delivery is resumed.
In the Continuous mode, the PN9 pseudo-random pattern delivery is repeated until the stop operation is performed. When
the stop operation is performed, the idle pattern delivery is resumed just after the current PN9 pseudo-random pattern (a
combination of twice) delivery is finished.
Idle Idle Idle PN9×2 Idle Idle Idle Idle
Idle Idle Idle PN9×2 PN9×2
PN9 PN9
PN9×2 PN9×2 Idle
Single
delivery operation
Continuous
delivery operation Stop operation
6553500000
Idle
Data bit length
First delivery address
PN9 column
Idle pattern memory
PN9×2
1022 bit
⋅⋅⋅⋅⋅
⋅⋅⋅⋅⋅
⋅⋅⋅⋅⋅
⋅⋅⋅⋅⋅

11
(3) In case that the PN15 pseudo-random pattern is used as the delivery data pattern
When the Pattern Generator output is turned ON, the idle pattern is continuously delivered.
When the delivery operation is performed, the PN15 pseudo-random pattern delivery starts just after the current idle
pattern delivery is finished.
In the Single mode, after the PN15 pseudo-random pattern is delivered twice, the idle pattern delivery is resumed.
In the Continuous mode, the PN15 pseudo-random pattern delivery is repeated until the stop operation is performed.
When the stop operation is performed, the idle pattern delivery is resumed just after the current PN15 pseudo-random
pattern (a combination of twice) delivery is finished.
Idle Idle Idle PN15×2 Idle Idle Idle Idle
Idle Idle Idle PN15×2 PN15×2
PN15 PN15
PN15×2 PN15×2 Idle
Single
delivery operation
Continuous
delivery operation Stop operation
PN15×2
65534 bit
6553500000
Idle
Data bit length
First delivery address
PN15
Idle pattern memory
⋅⋅⋅⋅⋅
⋅⋅⋅⋅⋅
⋅⋅⋅⋅⋅
⋅⋅⋅⋅⋅
4.1 Delivery Mode

12
Section 4 Detailed Description
(4) In case that the 0101 fixed pattern is used as the delivery data pattern
When the Pattern Generator output is turned ON, the idle pattern is continuously delivered.
When the delivery operation is performed, the 0101 repetition pattern delivery starts just after the current idle pattern
delivery is finished.
In the Single mode, after the 01 pattern is delivered once, the idle pattern delivery is resumed.
In the Continuous mode, the 01 repetition pattern delivery is repeated until the stop operation is performed. When the
stop operation is performed, the idle pattern delivery is resumed just after the current 01 repetition pattern delivery is
finished.
⋅⋅⋅⋅⋅
⋅⋅⋅⋅⋅
⋅⋅⋅⋅⋅
⋅⋅⋅⋅⋅
Idle Idle Idle Idle Idle Idle Idle Idle
Idle Idle Idle IdleIdle
Single
delivery operation
Continuous
delivery operation Stop operation
6553500000
Idle
Data bit length
First delivery address
01 repetition
Idle pattern memory
01
2 bit
01
01
01
01 01 01 01 01 01 01 01