Keysight E1418A Series User manual

Keysight E1418A
8/16 Channel D/A Converter
Service Manual
75000 Series C

Notices
© Keysight Technologies, Inc. 1996-2019
No part of this manual may be repro-
duced in any form or by any means
(including electronic storage and retrieval
or translation into a foreign language)
without prior agreement and written con-
sent from Keysight Technologies, Inc. as
governed by United States and interna-
tional copyright laws.
Manual Part Number
E1418-90010
Edition
Second Edition, October 2019
Published by
Keysight Technologies, Inc.
900 S. Taft Ave.
Loveland, CO 80537 USA
Sales and Technical Support
To contact Keysight for sales and techni-
cal support, refer to the support links on
the following Keysight websites:
www.keysight.com/find/E1418A
(product-specific information and sup-
port, software and documentation
updates)
www.keysight.com/find/assist (world-
wide contact information for repair and
service)
Declaration of Conformity
Declarations of Conformity for this prod-
uct and for other Keysight products may
be downloaded from the Web. Go to
http://keysight.com/go/conformity and
click on “Declarations of Conformity.” You
can then search by product number to
find the latest Declaration of Conformity.
Technology Licenses
The hardware and/or software described
in this document are furnished under a
license and may be used or copied only in
accordance with the terms of such
license.
Warranty
THE MATERIAL CONTAINED IN THIS
DOCUMENT IS PROVIDED “AS IS,” AND
IS SUBJECT TO BEING CHANGED,
WITHOUT NOTICE, IN FUTURE EDI-
TIONS. FURTHER, TO THE MAXIMUM
EXTENT PERMITTED BY APPLICABLE
LAW, KEYSIGHT DISCLAIMS ALL WAR-
RANTIES, EITHER EXPRESS OR IMPLIED,
WITH REGARD TO THIS MANUAL AND
ANY INFORMATION CONTAINED
HEREIN, INCLUDING BUT NOT LIMITED
TO THE IMPLIED WARRANTIES OF MER-
CHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. KEYSIGHT
SHALL NOT BE LIABLE FOR ERRORS OR
FOR INCIDENTAL OR CONSEQUENTIAL
DAMAGES IN CONNECTION WITH THE
FURNISHING, USE, OR PERFORMANCE
OF THIS DOCUMENT OR OF ANY INFOR-
MATION CONTAINED HEREIN. SHOULD
KEYSIGHT AND THE USER HAVE A SEP-
ARATE WRITTEN AGREEMENT WITH
WARRANTY TERMS COVERING THE
MATERIAL IN THIS DOCUMENT THAT
CONFLICT WITH THESE TERMS, THE
WARRANTY TERMS IN THE SEPARATE
AGREEMENT SHALL CONTROL.
Keysight Technologies does not warrant
third-party system-level (combination of
chassis, controllers, modules, etc.) per-
formance, safety, or regulatory compli-
ance unless specifically stated.
DFARS/Restricted Rights
Notices
If software is for use in the performance
of a U.S. Government prime contract or
subcontract, Software is delivered and
licensed as “Commercial computer soft-
ware” as defined in DFAR 252.227-7014
(June 1995), or as a “commercial item” as
defined in FAR 2.101(a) or as “Restricted
computer software” as defined in FAR
52.227-19 (June 1987) or any equivalent
agency regulation or contract clause.
Use, duplication or disclosure of Software
is subject to Keysight Technologies’ stan-
dard commercial license terms, and non-
DOD Departments and Agencies of the
U.S. Government will receive no greater
than Restricted Rights as defined in FAR
52.227-19(c)(1-2) (June 1987). U.S. Gov-
ernment users will receive no greater
than Limited Rights as defined in FAR
52.227-14 (June 1987) or DFAR 252.227-
7015 (b)(2) (November 1995), as applica-
ble in any technical data.

Safety Information
The following general safety precau-
tions must be observed during all
phases of operation of this instrument.
Failure to comply with these precau-
tions or with specific warnings or oper-
ating instructions in the product
manuals violates safety standards of
design, manufacture, and intended use
of the instrument. Keysight Technolo-
gies assumes no liability for the cus-
tomer's failure to comply with these
requirements.
General
Do not use this product in any manner not
specified by the manufacturer. The protec-
tive features of this product must not be
impaired if it is used in a manner specified in
the operation instructions.
Before Applying Power
Verify that all safety precautions are taken.
Make all connections to the unit before
applying power. Note the external markings
described under “Safety Symbols”.
Ground the Instrument
Keysight chassis’ are provided with a
grounding-type power plug. The
instrument chassis and cover must be
connected to an electrical ground to
minimize shock hazard. The ground pin
must be firmly connected to an electri-
cal ground (safety ground) terminal at
the power outlet. Any interruption of
the protective (grounding) conductor
or disconnection of the protective
earth terminal will cause a potential
shock hazard that could result in per-
sonal injury.
Do Not Operate in an Explosive
Atmosphere
Do not operate the module/chassis in
the presence of flammable gases or
fumes.
Do Not Operate Near Flammable
Liquids
Do not operate the module/chassis in
the presence of flammable liquids or
near containers of such liquids.
Cleaning
Clean the outside of the Keysight mod-
ule/chassis with a soft, lint-free,
slightly dampened cloth. Do not use
detergent or chemical solvents.
Do Not Remove Instrument Cover
Only qualified, service-trained person-
nel who are aware of the hazards
involved should remove instrument
covers. Always disconnect the power
cable and any external circuits before
removing the instrument cover.
Keep away from live circuits
Operating personnel must not remove
equipment covers or shields. Proce-
dures involving the removal of covers
and shields are for use by service-
trained personnel only. Under certain
conditions, dangerous voltages may
exist even with the equipment
switched off. To avoid dangerous elec-
trical shock, DO NOT perform proce-
dures involving cover or shield removal
unless you are qualified to do so.
DO NOT operate damaged
equipment
Whenever it is possible that the safety
protection features built into this prod-
uct have been impaired, either through
physical damage, excessive moisture,
or any other reason, REMOVE POWER
and do not use the product until safe
operation can be verified by service-
trained personnel. If necessary, return
the product to a Keysight Technologies
Sales and Service Office for service and
repair to ensure the safety features are
maintained.
DO NOT block the primary
disconnect
The primary disconnect device is the
appliance connector/power cord when
a chassis used by itself, but when
installed into a rack or system the dis-
connect may be impaired and must be
considered part of the installation.
Do Not Modify the Instrument
Do not install substitute parts or per-
form any unauthorized modification to
the product. Return the product to a
Keysight Sales and Service Office to
ensure that safety features are main-
tained.
In Case of Damage
Instruments that appear damaged or
defective should be made inoperative
and secured against unintended oper-
ation until they can be repaired by
qualified service personnel
Do NOT block vents and fan exhaust:
To ensure adequate cooling and venti-
lation, leave a gap of at least 50mm
(2") around vent holes on both sides of
the chassis.
Do NOT operate with empty slots: To
ensure proper cooling and avoid dam-
aging equipment, fill each empty slot
with an AXIe filler panel module.
Do NOT stack free-standing chassis:
Stacked chassis should be rack-
mounted.
All modules are grounded through the
chassis: During installation, tighten
each module's retaining screws to
secure the module to the chassis and
to make the ground connection.
Operator is responsible to maintain
safe operating conditions. To ensure
safe operating conditions, modules
should not be operated beyond the full
temperature range specified in the
Environmental and physical specifica-
tion. Exceeding safe operating condi-
tions can result in shorter lifespan,
improper module performance and
user safety issues. When the modules
are in use and operation within the
specified full temperature range is not
maintained, module surface tempera-
tures may exceed safe handling condi-
tions which can cause discomfort or
burns if touched. In the event of a
module exceeding the full temperature
range, always allow the module to cool
before touching or removing modules
from the chassis.
4

Safety Symbols
A CAUTION denotes a hazard. It
calls attention to an operating pro-
cedure or practice, that, if not cor-
rectly performed or adhered to
could result in damage to the
product or loss of important data.
Do not proceed beyond a CAUTION
notice until the indicated condi-
tions are fully understood and met.
A WARNING denotes a hazard. It
calls attention to an operating pro-
cedure or practice, that, if not cor-
rectly performed or adhered to,
could result in personal injury or
death. Do not proceed beyond a
WARNING notice until the indi-
cated conditions are fully under-
stood and met.
Products display the following sym-
bols:
Warning, risk of electric
shock
Refer to manual for addi-
tional safety information.
Earth Ground.
Chassis Ground.
Alternating Current (AC).
Direct Current (DC)
5

6

Keysight E1418A Service Guide 7
1 General Information
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Warnings and Cautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Module Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Module Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Module Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Ordering Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Field Kits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Terminal Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Recommended Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
1 Installation
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Initial Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Preparation for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Prepare the Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Prepare the Terminal Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Terminal Module Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Terminal Module Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Prepare the Command Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Shipping Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2 Operating Information
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Querying Module Identification and Configuration . . . . . . . . . . . . . . . . . . . 15
Configuration Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Preventive Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Cleaning Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Terminal Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Main Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Operator’s Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Operator Check Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Contents

8 Keysight E1418A Service Guide
3 Verification Tests
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Test Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
About the Verification Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Functional Verification Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Quick Verification Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Performance Verification Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Performance Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
About Program Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
SCPI drivers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
SCPI Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Functional Verification Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Functional Verification Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Functional Verification Test Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Performance Verification Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
DC Voltage Output Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
DC Voltage Compliance Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
DC Voltage Short Circuit Output Current. . . . . . . . . . . . . . . . . . . . . . . . . . . 34
DC Current Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Performance Verification Tests Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Performance Test Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Test Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Measurement Uncertainty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Voltage Output Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
DC Compliance Current Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
DC Short Circuit Current Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Test Accuracy Ratio (TAR). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4 Adjustments
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Keysight Technologies Calibration Services . . . . . . . . . . . . . . . . . . . . . . . . . 57
Calibration Interval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Closed-Cover Electronic Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Calibration Constants and Non-Volatile Memory . . . . . . . . . . . . . . . . . . . . 58
Making Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Adjustment Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
If Permanent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
If Temporary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Voltage Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Current Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Optional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Keysight E1418A Service Guide 9
Storing the Adjustments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Verify the Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Return the Module to Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Example Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
5 Service
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Equipment Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Service Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Visual Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Catastrophic Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
General Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Detailed Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Single Channel Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Repair/Maintenance Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Electrostatic Discharge (ESD) Precautions . . . . . . . . . . . . . . . . . . . . . . . . . 79
Surface Mount Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Tools Needed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Disassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Reassembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
6 Replaceable Parts
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Assembly Exchange. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
To Exchange an Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
7 Manual Changes
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
A Keysight E1418A Specifications
DC Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
DC Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
General Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Cooling Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

10 Keysight E1418A Service Guide

Keysight E1418A 8/16 Channel D/A Converter Module
Service Guide
11
1General Information
Introduction
This manual contains information required to test, troubleshoot, and repair the
Keysight E1418A 8/16 Channel D/A Converter Module. See the Keysight E1418A
User’s Manual for additional module information. Figure 1-1 shows the Keysight
E1418A module.
Figure 1-1 Keysight E1418A D/A Converter Module

12 Keysight E1418A Service Guide
General Information Safety Considerations
Safety Considerations
This product is a Safety Class I instrument that is provided with a protective earth
terminal when installed in the mainframe. The instrument, mainframe, and all
related documentation should be reviewed for familiarization with safety
markings and instructions before operation or service.
Refer to the WARNINGS page (page 6) in this manual for a summary of safety
information. Safety information for preventive maintenance, testing, adjusting,
and service follows and is also found throughout this manual.
Warnings and Cautions
This section contains WARNINGS which must be followed for your protection
and CAUTIONS which must be followed to avoid damage to the equipment when
performing instrument maintenance or repair.
SERVICE-TRAINED PERSONNEL ONLY. The information in
this manual is for service-trained personnel who are
familiar with electronic circuitry and are aware of the
hazards involved. To avoid personal injury or damage to
the instrument, do not perform procedures in this manual
or do any servicing unless you are qualified to do so.
CHECK MAINFRAME POWER SETTINGS. Before applying
power, verify that the mainframe setting matches the line
voltage and that the correct fuse is installed. An
uninterruptible safety earth ground must be provided from
the main power source to the supplied power cord set.
GROUNDING REQUIREMENTS. Interruption of the
protective (grounding) conductor (inside or outside the
mainframe) or disconnecting the protective earth terminal
will cause a potential shock hazard that could result in
personal injury. (Grounding one conductor of a
two-conductor outlet is not sufficient protection.)
IMPAIRED PROTECTION. Whenever it is likely that
instrument protection has been impaired, the mainframe
must be made inoperative and be secured against any
unintended operation.
REMOVE POWER IF POSSIBLE. Some procedures in this
manual may be performed with power supplied to the
mainframe while protective covers are removed. Energy
available at many points may, if contacted, result in
personal injury. (If maintenance can be performed without
power applied, the power should be removed.)

Keysight E1418A Service Guide 13
Safety Considerations General Information
USING AUTOTRANSFORMERS. If the mainframe is to be
energized via an autotransformer (for voltage reduction)
make sure the common terminal is connected to neutral
(that is, the grounded side of the main’s supply).
CAPACITOR VOLTAGES. Capacitors inside the mainframe
may remain charged even when the mainframe has been
disconnected from its source of supply.
USE PROPER FUSES. For continued protection against fire
hazard, replace the line fuses only with fuses of the same
current rating and type (such as normal blow, time delay,
etc.). Do not use repaired fuses or short-circuited
fuseholders.
SHOCK HAZARD. Only service-trained personnel who are
aware of the hazards involved should install, remove, or
configure the module. Before you remove any installed
module, disconnect AC power from the mainframe and
from other modules that may be connected to the module.
CHANNEL WIRING INSULATION. All channels that have a
common connection must be insulated so that the user is
protected from electrical shock. This means wiring for all
channels must be insulated as though each channel carries
the voltage of the highest voltage channel.

14 Keysight E1418A Service Guide
General Information
Module Description
The Keysight E1418A is an 8 or 16 channel digital-to-analog converter module
for use in a VXIbus C-size mainframe. The module is a register based device. The
module can be programmed via direct register access or, with the appropriate
driver, by high level commands. This manual describes programming the module
using SCPI (Standard Commands for Programmable Instruments) and the SCPI
driver.
Each Keysight E1418A module is a unique instrument having its own output
buffer and error queue. Multiple modules can not be combined into a
single instrument.
Each channel can be configured to either voltage or current output mode. When
configured for voltage output, voltages in the range of -16.0 V to
+16.0 V can be set. When configured for current output, current in the range of
-0.02 to + 0.02 Amps can be set. The channel output mode can be
programmatically set, or, can be forced to either voltage or current by
mechanical jumpers on the terminal block.
Each output channel is individually configurable to be either an isolated output
or a non-isolated output. Channel configuration to isolated or non-isolated is
made by individual plug-on modules for each channel.
Module Specifications
Specifications are listed in Appendix A of this manual and in the Keysight E1418A
User’s Manual. These specifications are the performance standards or limits
against which the module may be tested.
MAXIMUM VOLTAGE. The maximum voltage that can be applied
to any channel is 42 V Peak/42 Vdc. The maximum voltage from
any channel to ground is 42 V Peak/42 Vdc.
STATIC ELECTRICITY. Static electricity is a major cause of
component failure. To prevent damage to the electrical
components in the module, observe anti-static techniques
whenever working on the device.
PARTS REMOVAL. This module uses a surface mount printed
circuit assembly. Special soldering equipment is required for parts
removal or replacement. Use of standard soldering equipment will
cause damage to the printed circuit board and is not covered
under warranty.

Keysight E1418A Service Guide 15
Module Description General Information
Module Serial Numbers
Devices covered by this manual are identified by a serial number prefix listed on
the title page. Keysight Technologies uses a two-part serial number in the form
USXXXXYYYYY, where US is the country of origin, XXXX is the serial prefix, and
YYYYY is the serial suffix. The serial number prefix identifies a series of identical
instruments. The serial number suffix is assigned sequentially to each
instrument. The serial number plate is located on the right-hand shield near the
backplane connectors.
Ordering Options
The module may be ordered from Keysight Technologies in a variety of
configurations. As ordered, the module may have the following options:
Field Kits
The module can also be user configured. The following field expansion and
configuration kits are available. Each field kit contains installation instructions.
Description
E1418A 8-Channel D/A Converter with Non-Isolated Outputs
E1418A Option
001
16-Channel D/A Converter with Non-Isolated Outputs
E1418A Option
002
8-Channel D/A Converter with Isolated Outputs
E1418A Option
003
16-Channel D/A Converter with Isolated Outputs
Description Use
E1523A Single Channel Isolated
plug-on module
To change a single channel from
non-isolated to isolated output.
E1524A Expansion kit, 8-Channel
Non-Isolated Outputs
To add 8 additional
non-isolated channels to an
existing 8-channel module.
E1525A Expansion kit, 8-Channel
Isolated Outputs
To add 8 additional isolated
channels to an existing
8-channel module.

16 Keysight E1418A Service Guide
General Information Recommended Test Equipment
Terminal Modules
The standard Keysight E1418A Terminal Module provides screw terminals for
connections. Two other terminal options are available with the Keysight E1418A:
–• Crimp and Insert (Option A3E)
–• Ribbon Cable (Option A3H)
Recommended Test Equipment
Table 1-1 lists the test equipment recommended for testing and servicing the
module. Essential requirements for each piece of test equipment are described in
the Requirements column.
Table 1-1 Recommended Test Equipment
Instrument Requirements Recommended
Model
Use1
Controller, GPIB GPIB compatibility as defined by IEEE Standard
488-1988 and the identical ANSI Standard
MC1.1: SH1, AH1, T2, TE0, L2, LE0, SR0,
RL0, PP0, DC0, DT0, and C1, 2, 3, 4, 5.
HP 9000 Series 300 F,O,P,T
Mainframe Compatible with the Keysight E1418A E1400B/T, E1401A/T, or
E1401B
F,O,P,T
Command Module,
VXILink, EPC7
Embedded Controller
Compatible with Module
Resource manager in Slot 0
Logical address 0
Typical GPIB address 9
Requires the downloaded driver
“E1418”
E1405B or E1406A/B F,O,P,T
Digital Multimeter
5 1/2 or 6 1/2 digit
Voltage measurements to ± 16.8 Vdc Current
measurements to ± 0.02 A Four-wire resistance
measurements from 50 Ω to 500 Ω
Keysight 3458A or
Keysight 34401A
O, P, T
Terminal Module Compatible with the Keysight E1418A E1418-60101 O, P,T
Resistor 10 kΩ , 1%, 0.25 W, metal film Any available supplier
meeting the requirements
P
Resistor 600 Ω , 1%, 0.25 W, metal film P
User’s Manual E1418-90001 F,O,P,T
1 * F = Functional Verification Tests, O = Operation Verification Tests, P = Performance Verification
Tests, T = Troubleshooting

Keysight E1418A 8/16 Channel D/A Converter Module
Service Guide
11
2Installation
Introduction
This chapter contains the following topics:
Initial Inspection page 11
Preparation for Use page 12
Environment page 14
Shipping Guidelines page 14
Initial Inspection
Inspect the shipping container for damage. If the shipping container or
cushioning material is damaged, keep the container until the shipment contents
have been checked and the module has been checked mechanically and
electrically. Chapter 4 of this manual gives procedures to check the electrical
performance.
If the contents are incomplete, if there is mechanical damage or defect, or if the
module does not pass the electrical performance tests, notify your nearest
Keysight Technologies Sales and Service Office. If the shipping container is
damaged or the cushioning material shows signs of stress, notify the carrier as
well as Keysight Technologies. Keep the shipping materials for the carrier’s
inspection.
To avoid possible hazardous electrical shock, do not
perform electrical tests if there are signs of shipping
damage to any portion of the outer enclosure (covers,
panels, etc.).

12 Keysight E1418A Service Guide
Installation Preparation for Use
Preparation for Use
Chapter 1 of the Keysight E1418A User’s Manual contains complete instructions
for installing the module in a mainframe and installing a terminal module.
Refer to the mainframe user’s manual, command module user’s manual, and the
Installing Device Drivers installation note to prepare the mainframe.
Prepare the Module
Verify or set the module’s logical address. Refer to the Keysight E1418A User’s
Manual for instructions. In this manual the factory default logical address of 72 is
used.
To prepare the module for the adjustment procedures in Chapter 5, set or verify
the position of the CAL Secure Enable Jumper before installing the module in the
mainframe. (The jumper is factory set to CAL.) Figure 5-2 shows this jumper.
Prepare the Terminal Module
The procedures in this manual show the screw-type terminal module. To prepare
this terminal module, you will need to set the jumpers and make connections. If
you are using other types of terminal modules, consult the Keysight E1418A
User’s Manual for proper connections.
Terminal Module Jumpers
The screw-type terminal module contains jumpers that control how the Keysight
E1418A operates. To prepare the module for the Verification Tests in Chapter 4
and Adjustments in Chapter 5, the terminal module jumpers must be set to allow
the module to be programmed from the backplane. The Keysight E1418A will
operate without any jumpers installed. Figure 2-1 shows the jumper locations
and example settings.
There are two jumpers for each channel; a P/J jumper and a V/I jumper. The two
jumpers work together.
The P/J jumper sets the channel output mode to be either Program Selectable or
Jumper Selectable. When the jumper is in the program selectable position, the
channel output mode can be set via programming commands. The program
selectable position is recommended for the Verification Tests and Adjustment
procedures in this manual. In the jumper selectable position, the channel output
mode is set via the V/I jumper.
The V/I jumper sets the channel output mode to either voltage or current when
the P/J jumper is set to the Jumper Selectable position. When the P/J jumper is
set to Program Selectable, this jumper has no effect.

Keysight E1418A Service Guide 13
Preparation for Use Installation
–If you are using a terminal module dedicated to testing the Keysight
E1418A, you can remove all the jumpers or put the jumpers in the storage
position.
–If you are using the end-user’s terminal module, record the positions of the
jumpers. Set the P/J jumpers to the programmable position. Before
returning the module to use, restore the P/J jumpers to their original
position.
Terminal Module Connections
The Verification Tests require four-wire connections at each channel. The
Adjustment procedures can be performed using a single connections at the CAL
terminals. Additional connection information is given in the procedures in
Chapters 4 and 5 of this manual.
With no jumpers installed, the module will be in the Program
Selectable output mode.
Figure 2-1 P/J and V/I Jumpers

14 Keysight E1418A Service Guide
Installation Environment
Prepare the Command Module
All verification and adjustment procedures in this manual use SCPI (Standard
Commands for Programmable Instruments). Prepare the command module by
downloading the SCPI driver named “E1418". Downloading instructions are
given in the Installing Device Drivers installation note.
Environment
The recommended operating altitude for the module is 2000 m (6000 ft) or less.
The recommended operating environment for the module is:
Shipping Guidelines
If you need to return the Keysight E1418A to Keysight Technologies, first remove
any terminal modules before packaging for shipment. Attach a tag to the
module identifying the owner and indicating the service or repair required. Mark
the shipping container “FRAGILE”. If you are exchanging a module, read Assembly
Exchange.
In any correspondence, refer to the module by model number and full serial
number.
Keysight Technologies recommends using shipping containers and materials
identical to those used by the factory. These materials are available through
Keysight Technologies Sales and Service Offices.
If you use commercially available shipping materials, place the module in an
anti-static bag and wrap the module in heavy paper or plastic. Use a strong
shipping container. A double wall carton of 2400 Pa (350 psi) test material is
adequate.
Use enough shock-absorbing material (layer at least 75 mm to 110 mm, 3 in to 4
in) around the module to provide firm cushion and to prevent movement in the
container. Protect the front panel with cardboard. Seal the container securely
and mark the container “FRAGILE.”
Environment Temperature Humidity
Operating 0 oC to + 55 oC <65% relative (0 oC to + 40 oC)
non condensing
Storage and
Shipment
– 40 oC to + 75 oC <65% relative (0 oC to + 40 oC)
non condensing