B+K precision 9171 User manual

Model: 9171, 9172, 9173, 9174, 9181, 9182,
9183, 9184, 9185
Programmable DC Power
Supplies
USER MANUAL

Safety Summary
The following safety precautions apply to both operating and
maintenance personnel and must be observed during all phases of
operation, service, and repair of this instrument. Before applying
power, follow the installation instructions and become familiar with
the operating instructions for this instrument.
If this device is damaged or something is missing, contact the place
of purchase immediately.
This manual contains information and warnings that must be
followed to ensure safe operation as well as maintain the meter in
a safe condition.
GROUND THE INSTRUMENT
To minimize shock hazard, the instrument chassis and cabinet
must be connected to an electrical ground. This instrument is
grounded through the ground conductor of the supplied, three-
conductor ac power cable. The power cable must be plugged into
an approved three-conductor electrical outlet. Do not alter the
ground connection. Without the protective ground connection, all
accessible conductive parts (including control knobs) can render an
electric shock. The power jack and mating plug of the power cable
must meet IEC safety standards.
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE
Do not operate the instrument in the presence of flammable gases
or fumes. Operation of any electrical instrument in such an
environment constitutes a definite safety hazard.

KEEP AWAY FROM LIVE CIRCUITS
Instrument covers must not be removed by operating personnel.
Component replacement and internal adjustments must be made
by qualified maintenance personnel. Disconnect the power cord
before removing the instrument covers and replacing components.
Under certain conditions, even with the power cable removed,
dangerous voltages may exist. To avoid injuries, always
disconnect power and discharge circuits before touching them.
DO NOT SERVICE OR ADJUST ALONE
Do not attempt any internal service or adjustment unless another
person, capable of rendering first aid and resuscitation, is present.
DO NOT SUBSTITUTE PARTS OR MODIFY THE INSTRUMENT
Do not install substitute parts or perform any unauthorized
modifications to this instrument. Return the instrument to B&K
Precision for service and repair to ensure that safety features are
maintained.
WARNINGS AND CAUTIONS
WARNING and CAUTION statements, such as the following
examples, denote a hazard and appear throughout this manual.
Follow all instructions contained in these statements.
A WARNING statement calls attention to an operating procedure,
practice, or condition, which, if not followed correctly, could result in
injury or death to personnel.

A CAUTION statement calls attention to an operating procedure,
practice, or condition, which, if not followed correctly, could result in
damage to or destruction of part or all of the product.
WARNING:
Do not alter the ground connection. Without the protective
ground connection, all accessible conductive parts (including
control knobs) can render an electric shock. The power jack and
mating plug of the power cable meet IEC safety standards.
WARNING:
To avoid electrical shock hazard, disconnect power cord before
removing covers. Refer servicing to qualified personnel.
CAUTION:
Before connecting the
line cord to the AC mains, check the rear
panel AC line voltage indicator. Applying a line voltage other than
the indicated voltage can destroy the AC line fuses. For
continued fire protection, replace fuses only with those of the
specified voltage and
current ratings.
CAUTION:
This product uses components which can be damaged by electro-
static discharge (ESD). To avoid damage, be sure to follow proper
procedures for handling, storing and transporting parts and
subassemblies which contain ESD
-sensitive components.

Compliance Statements
Disposal of Old Electrical & Electronic Equipment (Applicable
in the European
Union and other European countries with separate collection
systems)
This product is subject to Directive
2002/96/EC of the European
Parliament and the Council of the
European Union on waste
electrical and electronic equipment
(WEEE) , and in jurisdictions
adopting that Directive, is marked
as being put on the market after
August 13, 2005, and should not be
disposed of as unsorted
municipal waste. Please utilize your
local WEEE collection
facilities in the disposition of this
product and otherwise observe all
applicable requirements.

CE Declaration of Conformity
The power supplies models 9171, 9172, 9173, 9174, 9181, 9182,
9183, 9184, 9185 meet the requirements of 2006/95/EC Low
Voltage Directive and 2004/108/EC Electromagnet Compatibility
Directive with the following standards.
Low Voltage Directive
-EN61010-1: 2001
Safety requirements for electrical equipment for
measurement, control, and laboratory use.
Part 1: General requirements
EMC Directive
-EN 61000-3-2: 2006
-EN 61000-3-3: 1995+A1: 2001+A2: 2005
-EN 61000-4-2: 1995+A1: 1998+A2: 2001
-EN61000-4-3: 2006+A1: 2008
-EN61000-4-4: 2004
-EN61000-4-5: 2006
-EN61000-4-6: 2007
-EN61000-4-11: 2004
-EN 61326-1: 2006
Electrical equipment for measurement, control,
and laboratory use.

Safety Symbols
Refer to the user manual for warning information to
avoid hazard or personal injury and prevent damage to
instrument.
Chassis (earth ground) symbol.
On (Power). This is the In position of the power switch
when instrument is ON.
Off (Power). This is the Out position of the power switch
when instrument is OFF.
On (Supply). This is the AC mains connect/disconnect
switch at the back of the instrument.
Off (Supply). This is the AC mains connect/disconnect
switch at the back of the instrument.

Table of Contents
1General Information ........................................................... 1
1.1 Product Overview ................................................................ 1
1.2 Package Contents................................................................. 2
1.3 Front Panel Overview........................................................... 3
Front Panel Description.................................................................5
1.4 Rear Panel Overview............................................................ 6
Rear Panel Description.................................................................. 8
1.5 Optional Accessories............................................................ 8
Interface Card Options..................................................................8
Rack mount Options......................................................................9
1.6 Display Overview ................................................................. 9
Display Description .....................................................................10
1.7 Installing Optional Interface Cards .................................... 10
How to Install Interface Cards.....................................................11
Removing Interface Cards...........................................................12
1.8 Rackmount Installation ...................................................... 13
2Getting Started ....................................................................18
2.1 Input Power and Fuse Requirements ................................ 18
Input Power.................................................................................18
Fuse Requirements......................................................................18
2.2 Line Voltage Selection........................................................ 19
2.3 Output Connections........................................................... 21
2.4 Preliminary Check .............................................................. 23
Output Check ..............................................................................25
Check Model and Firmware Version ...........................................27
3Front Panel Operation......................................................28

3.1 Menu Options .................................................................... 28
How to Access the Menu.............................................................29
3.2 Remote Interface Setup..................................................... 32
USB Interface (virtual COM)........................................................32
GPIB Interface ............................................................................. 34
Ethernet (LAN) Interface .............................................................34
RS-232 and RS-485 Interface (Optional) .....................................35
3.3 Adjusting LCD Display, Key Lock, Key Sound...................... 39
LCD Backlight Timer ....................................................................39
Key Lock ......................................................................................39
Disabling Key Sound....................................................................40
3.4 Restore to Factory Default ................................................. 41
3.5 Configure Voltage and Current Output.............................. 43
Voltage and Current Limit Settings .............................................43
Configure Voltage and Current Output....................................... 45
Slew Rate Configuration .............................................................51
Output Timer Function................................................................ 53
Measurement Average Setting ...................................................55
3.6 Dual Channel Configurations ............................................. 55
Multi/Single Output Control .......................................................55
Series/Parallel Tracking Mode ....................................................56
3.7 Remote Sense .................................................................... 57
3.8 LED and Low Current Test Modes...................................... 62
LED Mode....................................................................................62
Low Current Mode ......................................................................64
3.9 Output Protection.............................................................. 66
Configure OVP.............................................................................66
Configure OCP.............................................................................67

3.10 Save/Recall Output Settings .............................................. 68
3.11 Sequence Program Mode .................................................. 71
3.12 External Analog Control..................................................... 72
3.13 Digital I/O........................................................................... 77
INPUT ..........................................................................................79
OUTPUT ......................................................................................80
3.14 Display Errors ..................................................................... 81
3.15 Connecting in Series and Parallel....................................... 82
4Remote Operation..............................................................83
4.1 Interface Connection ......................................................... 83
USB (Virtual COM) & RS-232.......................................................83
GPIB ............................................................................................84
Ethernet (LAN) ............................................................................85
4.2 Remote Commands ........................................................... 90
Parameter Definitions.................................................................91
Remote Commands.....................................................................91
4.3 Sequence Programming................................................... 134
Examples...................................................................................134
4.4 Multi Unit Programming..................................................138
Remote Commands via USB......................................................139
5Troubleshooting Guide ................................................. 150
General ..................................................................................... 150
Remote Control .........................................................................152
6Specifications ................................................................... 153
7Calibration......................................................................... 158
Access Calibration Menu...........................................................158
Requirements............................................................................ 159
Current Calibration ...................................................................159

Voltage Calibration ...................................................................163
External Analog Input Calibration.............................................165
Index ........................................................................................... 170
SERVICE INFORMATION........................................................ 171
LIMITED THREE-YEAR WARRANTY ................................. 172

1
1General Information
1.1 Product Overview
The 917x and 918x series are high-performance dual range linear
DC power supplies that provide clean and reliable power with high
resolution and accuracy. All models are programmable via standard
USB interface or optional RS232, GPIB and LAN interface.
Interface cards and I/O cards come in a modular form factor.
Selected models feature high voltage outputs or dual channels to
provide series/parallel tracking functionality. All models include front
and rear panel outputs for flexibility, and feature programmable list
mode for storing and running customized test sequences.
Additionally, a unique LED test mode function can be enabled for
LED test applications requiring minimal inrush current output. These
power supplies are suitable for bench or rack mount operation with
the available rack mount kit option.
Features
•Single and dual output models with up to 210W output power
•High accuracy and low noise output
•Dual range output with automatic range selection (except of
high voltage models 9184 and 9185)
•Fast transient response of < 50 μs of most models
•Very low ripple and noise
•LED test mode for low inrush current output
•Programmable list mode for creating test sequences
•Front and rear remote sense terminals for single output
models (except of high voltage models 9184 and 9185)
•OVP, OCP, and OTP protection
•Two interchangeable interface slots accepting any of the
following optional interface cards: LAN/GPIB, Digital I/O and
Analog control, RS485, RS232
•Standard USB interface (virtual COM)
•Programmable voltage and current slew rates

2
1.2 Package Contents
Please inspect the instrument mechanically and electrically upon
receiving it. Unpack all items from the shipping carton, and check for
any obvious signs of physical damage that may have occurred
during transportation. Report any damage to the shipping agent
immediately. Save the original packing carton for possible future
reshipment. Every power supply is shipped with the following
contents:
•917x/918x Power supply
•User Manual
•AC Power Cord
•USB Type A to Type B Cable
•Line fuse (for 115V or 230V operation)
•Certificate of Calibration
•Test Report
Verify that all items above are included in the shipping container. If
anything is missing, please contact B&K Precision.

3
1.3 Front Panel Overview
Figure 1 - Front Panel for 9171/9172/9181
Figure 2 - Front Panel for 9173/9174
19
1
2 5 6
16
2120 18
17
10 11 8 12 13
14
3 4 97
15
1
19
2 5
17
106 7 11 8129133 4
16
14
15
18

4
Figure 3 - Front Panel for 9182/9183
Figure 4 - Front Panel for 9184/9185
1
2 5
17
10
6711 812
913
34
16
14
15
18
20
19 21
1
2 5
17
106 7 11 8129133 4
16
14
15
18
19

5
Front Panel Description
Power ON/OFF button
LCD display
Esc / CLR button
Menu button
ISET button
VSET button
Decimal/LCL(Local) button
Numeric keypad
RCL (Recall) button
OVP indicator
OCP indicator
RMT (Remote mode) indicator
LOCK (Key lock) indicator
Enter button
Up, Down arrow keys
Left, Right arrow keys
Output button (Dual channel models have CH1 and CH2 output
buttons)
Output ON/OFF indicator light
Main output terminals (Models 9182,9184,9185 have larger binding
post terminals for high current/voltage outputs)
Front terminal shorting bars
Front panel +S/-S sense terminals (Not available with models 9173,
9174, 9184, 9185)
1
2
3
4
5
6
7
8
9
10
11
14
15
16
17
18
19
20
21
12
13

6
1.4 Rear Panel Overview
Figure 5- Rear View for 9171/9172/9181
Figure 6- Rear View for 9173/9174
22
23
24
31
29
30
28
25 26 27
29
28
22
25 24
23
30
29
28
31
25 26 27

7
Figure 7- Rear View for 9182/9183
Figure 8- Rear View for 9184/9185
29
28
22
25 24
23
30
3125 26 27
29
28
22 23
30
3124 26 27

8
Rear Panel Description
S1 interface slot (shown with optional LAN/GPIB interface card)
S2 interface slot (shown with optional DIO/Analog interface card)
USB interface
Temperature controlled cooling fan(s)
AC input fuse box
Line input receptacle
Rear panel outputs (++/--) and sense (+S/-S) terminals
Shorting pins
Line voltage selection switch (bottom of power supply) See “2.2Line
Voltage Selection” for details.
Chassis ground
1.5 Optional Accessories
The following lists all optional accessories supported by the
917x/918x series power supplies.
Interface Card Options
Model
Description
DRGL
GPIB/LAN interface card
DR1DIO
Single channel digital I/O and analog control card
DR2DIO
Dual channel digital I/O and analog control card
DRRS485
RS485 interface card
DRRS232
RS232 interface card
24
25
26
27
28
29
30
31
22
23