Tektronix LE160 User manual
Tektronix LE160 & LE320
Linear Equalizers
Instruction Manual
*P077088303*
077088303
Warning
The servicing instructions are for use by qualified personnel only. To avoid
personal injury, do not perform any servicing unless you are qualified to do
so. Refer to all safety summaries prior to performing service.
Revision A, October 10, 2016
Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries
or suppliers, and are protected by national copyright laws and international treaty provisions. Tektronix products
are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all
previously published material. Specifications and price change privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Some software and firmware in this product is copyrighted as follows:
CException - Copyright (c) 2007 Mark VanderVoord
LPCOpen - Copyright(C) NXP Semiconductors, 2012
FreeRTOS - V7.5.2 - Copyright (C) 2013 Real Time Engineers Ltd.
ZedGraph - Copyright © 2006 Jerry Vos & John Champion
ColorSlider - Copyright © Michał Bryłka 2007
Contacting Tektronix
Tektronix, Inc.
14150 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
■In North America, call 1-800-833-9200.
■Worldwide, visit www.tek.com to find contacts in your area.
Table of Contents
Important safety information ............................................................................................................. vii
General safety summary ............................................................................................................... vii
Service safety summary ................................................................................................................. ix
Terms in the manual ....................................................................................................................... x
Terms on the product ...................................................................................................................... x
Symbols on the product .................................................................................................................. x
Compliance Information ..................................................................................................................... xi
EMC compliance ........................................................................................................................... xi
Safety compliance ........................................................................................................................ xii
Environmental compliance .......................................................................................................... xiii
Preface ............................................................................................................................................... xv
Getting started
Product description ......................................................................................................................... 1
Key features .................................................................................................................................... 2
Standard accessories ....................................................................................................................... 2
Instrument options .......................................................................................................................... 3
Installation ...................................................................................................................................... 3
Site considerations .......................................................................................................................... 3
Operating requirements .................................................................................................................. 4
Preventing electrostatic discharge (ESD) ....................................................................................... 4
Configuration .................................................................................................................................. 5
Download the LE application software .......................................................................................... 6
Incoming inspection and first-time operation ................................................................................. 6
Power on the instrument ............................................................................................................ 6
Power off the instrument ........................................................................................................... 7
Operating basics
Instrument connections ................................................................................................................... 9
Top view .................................................................................................................................... 9
Side view ................................................................................................................................. 11
User interface ................................................................................................................................ 12
Connect view ........................................................................................................................... 12
Common controls .................................................................................................................... 14
Individual tap controls ............................................................................................................. 17
Frequency response graphs ..................................................................................................... 18
Tektronix LE160 & LE320 Instruction Manual i
4-Tap operating mode ............................................................................................................. 19
9-Tap operating mode ............................................................................................................. 21
Raw 9-Tap operating mode ..................................................................................................... 22
SPM - S-Parameter Modeler operating mode ......................................................................... 23
CDS-Channel Designer operating mode ................................................................................. 25
Specifications
Maintenance
User service information .............................................................................................................. 31
Service offerings ........................................................................................................................... 31
Inspection and cleaning ................................................................................................................ 32
General care ............................................................................................................................. 32
Preventive maintenance ........................................................................................................... 32
Repack the instrument for shipment ............................................................................................. 33
Troubleshooting information ........................................................................................................ 33
Check for common problems .................................................................................................. 33
Appendix A - LE160/LE320 software license upgrade information
Upgrade the software license on the instrument ........................................................................... 35
Verify the license information for the upgrade ............................................................................ 39
Appendix B - Theory of operation
Block diagram ............................................................................................................................... 41
Operating modes ........................................................................................................................... 42
Appendix - C Remote control guidelines and commands
General guidance .......................................................................................................................... 45
Command reference overview ...................................................................................................... 47
Connection commands ................................................................................................................. 49
PI_connect (Command only) ................................................................................................... 49
PI_conn_avail_Q (Query only) ............................................................................................... 50
PI_conn_power ........................................................................................................................ 51
PI_conn_refresh ....................................................................................................................... 51
PI_disconnect_all (Command only) ........................................................................................ 52
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ii Tektronix LE160 & LE320 Instruction Manual
Mode commands ........................................................................................................................... 53
PI_mode ................................................................................................................................... 53
4-Tap commands .......................................................................................................................... 54
PI_tap4_agc_gain .................................................................................................................... 55
PI_tap4_agc_lev ...................................................................................................................... 56
PI_tap4_agc_state .................................................................................................................... 57
PI_tap4_deemph ...................................................................................................................... 58
PI_tap4_emu_rate .................................................................................................................... 58
PI_tap4_offs_state ................................................................................................................... 59
PI_tap4_offs_val ..................................................................................................................... 60
PI_tap4_out_amp ..................................................................................................................... 61
PI_tap4_out_cal_Q (Query only) ............................................................................................ 62
PI_tap4_out_enable ................................................................................................................. 63
PI_tap4_preshoot ..................................................................................................................... 63
PI_tap4_statefile_load (Command only) ................................................................................. 64
PI_tap4_statefile_save (Command only) ................................................................................ 64
PI_tap4_tap_enable ................................................................................................................. 65
PI_tap4_tap_enable_all ........................................................................................................... 65
PI_tap4_tap_val ....................................................................................................................... 66
9-Tap commands .......................................................................................................................... 67
PI_tap9_agc_gain .................................................................................................................... 68
PI_tap9_agc_lev ...................................................................................................................... 69
PI_tap9_agc_state .................................................................................................................... 70
PI_tap9_offs_state ................................................................................................................... 71
PI_tap9_offs_val ..................................................................................................................... 72
PI_tap9_out_amp ..................................................................................................................... 73
PI_tap9_out_cal_Q (Query only) ............................................................................................ 74
PI_tap9_out_enable ................................................................................................................. 75
PI_tap9_statefile_load (Command only) ................................................................................. 75
PI_tap9_statefile_save (Command only) ................................................................................ 76
PI_tap9_tap_enable ................................................................................................................. 76
PI_tap9_tap_enable_all ........................................................................................................... 77
PI_tap9_tap_val ....................................................................................................................... 78
Raw 9-Tap Commands ................................................................................................................. 79
PI_tap9R_agc_gain ................................................................................................................. 80
PI_tap9R_agc_lev ................................................................................................................... 81
PI_tap9R_agc_state ................................................................................................................. 82
PI_tap9R_offs_state ................................................................................................................ 83
PI_tap9R_offs_val ................................................................................................................... 84
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Tektronix LE160 & LE320 Instruction Manual iii
PI_tap9R_out_amp .................................................................................................................. 85
PI_tap9R_out_enable .............................................................................................................. 85
PI_tap9R_statefile_load (Command only) .............................................................................. 86
PI_tap9R_statefile_save (Command only) .............................................................................. 86
PI_tap9R_tap_enable ............................................................................................................... 87
PI_tap9R_tap_enable_all ......................................................................................................... 87
PI_tap9R_tap_val .................................................................................................................... 88
SPM Commands ........................................................................................................................... 89
PI_spm_agc_gain .................................................................................................................... 90
PI_spm_agc_lev ...................................................................................................................... 91
PI_spm_agc_state .................................................................................................................... 92
PI_spm_emu_cutoff ................................................................................................................ 93
PI_spm_emu_rolloff ................................................................................................................ 94
PI_spm_enable_reldelay ......................................................................................................... 95
PI_spm_process ....................................................................................................................... 96
PI_spm_offs_state ................................................................................................................... 96
PI_spm_offs_val ...................................................................................................................... 97
PI_spm_out_amp ..................................................................................................................... 98
PI_spm_out_cal_Q .................................................................................................................. 99
PI_spm_out_enable ............................................................................................................... 100
PI_spm_reldelay .................................................................................................................... 100
PI_spm_set_spmfile (Command only) .................................................................................. 101
PI_spm_statefile_load (Command only) ............................................................................... 102
PI_spm_statefile_save (Command only) ............................................................................... 102
CDS Commands ......................................................................................................................... 103
PI_cds_add_pole (Command only) ....................................................................................... 104
PI_cds_add_zero (Command only) ....................................................................................... 105
PI_cds_agc_gain .................................................................................................................... 106
PI_cds_agc_lev ...................................................................................................................... 107
PI_cds_agc_state ................................................................................................................... 108
PI_cds_emu_cutoff ................................................................................................................ 109
PI_cds_emu_rolloff ............................................................................................................... 109
PI_cds_enable_reldelay ......................................................................................................... 110
PI_cds_reldelay ..................................................................................................................... 111
PI_cds_offs_state ................................................................................................................... 111
PI_cds_offs_val ..................................................................................................................... 112
PI_cds_out_amp .................................................................................................................... 113
PI_cds_out_cal_Q (Query only) ............................................................................................ 114
PI_cds_out_enable ................................................................................................................. 114
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iv Tektronix LE160 & LE320 Instruction Manual
PI_cds_pz_clear (Command only) ........................................................................................ 115
PI_cds_pz_process (Command only) .................................................................................... 116
PI_cds_statefile_load (Command only) ................................................................................ 116
PI_cds_statefile_save (Command only) ................................................................................ 117
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Tektronix LE160 & LE320 Instruction Manual v
Table of Contents
vi Tektronix LE160 & LE320 Instruction Manual
Important safety information
This manual contains information and warnings that must be followed by the user
for safe operation and to keep the product in a safe condition.
To safely perform service on this product, see the Service safety summary that
follows the General safety summary.
General safety summary
Use the product only as specified. Review the following safety precautions to
avoid injury and prevent damage to this product or any products connected to it.
Carefully read all instructions. Retain these instructions for future reference.
Comply with local and national safety codes.
For correct and safe operation of the product, it is essential that you follow
generally accepted safety procedures in addition to the safety precautions
specified in this manual.
The product is designed to be used by trained personnel only.
Only qualified personnel who are aware of the hazards involved should remove
the cover for repair, maintenance, or adjustment.
This product is not intended for detection of hazardous voltages.
While using this product, you may need to access other parts of a larger system.
Read the safety sections of the other component manuals for warnings and
cautions related to operating the system.
When incorporating this equipment into a system, the safety of that system is the
responsibility of the assembler of the system.
Tektronix LE160 & LE320 Instruction Manual vii
To avoid fire or personal
injury Use proper power cord. Use only the power cord specified for this product and
certified for the country of use. Do not use the provided power cord for other
products.
Ground the product. This product is grounded through the grounding conductor of
the power cord. To avoid electric shock, the grounding conductor must be
connected to earth ground. Before making connections to the input or output
terminals of the product, ensure that the product is properly grounded. Do not
disable the power cord grounding connection.
Power disconnect. The power cord disconnects the product from the power
source. See instructions for the location. Do not position the equipment so that it
is difficult to operate the power cord; it must remain accessible to the user at all
times to allow for quick disconnection if needed.
Use proper AC adapter. Use only the AC adapter specified for this product.
Observe all terminal ratings. To avoid fire or shock hazard, observe all rating and
markings on the product. Consult the product manual for further ratings
information before making connections to the product.
Do not apply a potential to any terminal, including the common terminal, that
exceeds the maximum rating of that terminal.
Do not float the common terminal above the rated voltage for that terminal.
The measurement terminals on this product are not rated for connection to mains
or Category II, III, or IV circuits.
Do not operate with suspected failures. If you suspect that there is damage to this
product, have it inspected by qualified service personnel.
Disable the product if it is damaged. Do not use the product if it is damaged or
operates incorrectly. If in doubt about safety of the product, turn it off and
disconnect the power cord. Clearly mark the product to prevent its further
operation.
Examine the exterior of the product before you use it. Look for cracks or missing
pieces.
Use only specified replacement parts.
Use proper fuse. Use only the fuse type and rating specified for this product.
Wear eye protection. Wear eye protection if exposure to high-intensity rays or
laser radiation exists.
Do not operate in wet/damp conditions. Be aware that condensation may occur if a
unit is moved from a cold to a warm environment.
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry. Remove the input signals before you clean
the product.
Provide proper ventilation. Refer to the manual's installation instructions for
details on installing the product so it has proper ventilation.
Slots and openings are provided for ventilation and should never be covered or
otherwise obstructed. Do not push objects into any of the openings.
Important safety information
viii Tektronix LE160 & LE320 Instruction Manual
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