B+K precision BCS Series User manual

2
Safety Summary
The following safety precautions apply to both operating and maintenance personnel and must be followed
during all phases of operation, service, and repair of this instrument.
Before applying power to this instrument:
• Read and understand the safety and operational information in this manual.
• Apply all the listed safety precautions.
• Verify that the voltage selector at the line power cord input is set to the correct line voltage. Operating
the instrument at an incorrect line voltage will void the warranty.
• Make all connections to the instrument before applying power.
• Do not operate the instrument in ways not specied by this manual or by B&K Precision.
Failure to comply with these precautions or with warnings elsewhere in this manual violates the safety
standards of design, manufacture, and intended use of the instrument. B&K Precision assumes no
liability for a customer’s failure to comply with these requirements.
Category rating
The IEC 61010 standard denes safety category ratings that specify the amount of electrical energy
available and the voltage impulses that may occur on electrical conductors associated with these category
ratings. The category rating is a Roman numeral of I, II, III, or IV. This rating is also accompanied by a
maximum voltage of the circuit to be tested, which denes the voltage impulses expected and required
insulation clearances. These categories are:
Category I (CAT I): Measurement instruments whose measurement inputs are not intended to be
connected to the mains supply. The voltages in the environment are typically
derived from a limited-energy transformer or a battery.
Category II (CAT II): Measurement instruments whose measurement inputs are meant to be connected
to the mains supply at a standard wall outlet or similar sources. Example
measurement environments are portable tools and household appliances.
Category III (CAT III): Measurement instruments whose measurement inputs are meant to be
connected to the mains installation of a building. Examples are measurements
inside a building’s circuit breaker panel or the wiring of permanently-installed motors.

3
Category IV (CAT IV): Measurement instruments whose measurement inputs are meant to be
connected to the primary power entering a building or other outdoor wiring.
Do not use this instrument in an electrical environment with a higher category rating than what is specied
in this manual for this instrument.
You must ensure that each accessory you use with this instrument has a category rating equal to or
higher than the instrument’s category rating to maintain the instrument’s category rating. Failure to do
so will lower the category rating of the measuring system.
Electrical Power
This instrument is intended to be powered from a CATEGORY II mains power environment. The mains
power should be 115 V RMS or 230 V RMS. Use only the power cord supplied with the instrument and
ensure it is appropriate for your country of use.
Ground the Instrument
To minimize shock hazard, the instrument chassis and cabinet must be connected to an electrical safety
ground. This instrument is grounded through the ground conductor of the supplied, three-conductor AC
line power cable. The power cable must be plugged into an approved three-conductor electrical outlet.
The power jack and mating plug of the power cable meet IEC safety standards.
Do not alter or defeat the ground connection. Without the safety ground connection, all accessible
conductive parts (including control knobs) may provide an electric shock. Failure to use a properly-
grounded approved outlet and the recommended three-conductor AC line power cable may result in
injury or death.

4
Unless otherwise stated, a ground connection on the instrument’s front or rear panel is for a reference
of potential only and is not to be used as a safety ground. Do not operate in an explosive or ammable
atmosphere.
Do not operate the instrument in the presence of ammable gases or vapors, fumes, or nely-divided
particulates.
The instrument is designed to be used in oce-type indoor environments. Do not operate the instrument
• In the presence of noxious, corrosive, or ammable fumes, gases, vapors, chemicals, or nely-divided
particulates.
• In relative humidity conditions outside the instrument’s specications.
• In environments where there is a danger of any liquid being spilled on the instrument or where any
liquid can condense on the instrument.
• In air temperatures exceeding the specied operating temperatures.
• In atmospheric pressures outside the specied altitude limits or where the surrounding gas is not air.
• In environments with restricted cooling air ow, even if the air temperatures are within specications.
• In direct sunlight.
This instrument is intended to be used in an indoor pollution degree 2 environment. The operating
temperature range is 0∘C to 40∘C and 20% to 80% relative humidity, with no condensation allowed.
Measurements made by this instrument may be outside specications if the instrument is used in non-
oce-type environments. Such environments may include rapid temperature or humidity changes, sunlight,
vibration and/or mechanical shocks, acoustic noise, electrical noise, strong electric elds, or strong
magnetic elds.
Do not operate instrument if damaged
If the instrument is damaged, appears to be damaged, or if any liquid, chemical, or other material gets on
or inside the instrument, remove the instrument’s power cord, remove the instrument from service, label

5
it as not to be operated, and return the instrument to B&K Precision for repair. Notify B&K Precision of
the nature of any contamination of the instrument.
Clean the instrument only as instructed
Do not clean the instrument, its switches, or its terminals with contact cleaners, abrasives, lubricants,
solvents, acids/bases, or other such chemicals. Clean the instrument only with a clean dry lint-free cloth
or as instructed in this manual. Not for critical applications
This instrument is not authorized for use in contact with the human body or for use as a component in a
life-support device or system.
Do not touch live circuits
Instrument covers must not be removed by operating personnel. Component replacement and internal
adjustments must be made by qualied service-trained maintenance personnel who are aware of the
hazards involved when the instrument’s covers and shields are removed. Under certain conditions,
even with the power cord removed, dangerous voltages may exist when the covers are removed. To
avoid injuries, always disconnect the power cord from the instrument, disconnect all other connections
(for example, test leads, computer interface cables, etc.), discharge all circuits, and verify there are
no hazardous voltages present on any conductors by measurements with a properly-operating voltage-
sensing device before touching any internal parts. Verify the voltage-sensing device is working properly
before and after making the measurements by testing with known-operating voltage sources and test for
both DC and AC voltages. Do not attempt any service or adjustment unless another person capable of
rendering rst aid and resuscitation is present.
Do not insert any object into an instrument’s ventilation openings or other openings.
Hazardous voltages may be present in unexpected locations in circuitry being tested when a fault condition
in the circuit exists.
Fuse replacement must be done by qualied service-trained maintenance personnel who are aware of
the instrument’s fuse requirements and safe replacement procedures. Disconnect the instrument from

6
the power line before replacing fuses. Replace fuses only with new fuses of the fuse types, voltage
ratings, and current ratings specied in this manual or on the back of the instrument. Failure to do so
may damage the instrument, lead to a safety hazard, or cause a re. Failure to use the specied fuses
will void the warranty.
Servicing
Do not substitute parts that are not approved by B&K Precision or modify this instrument. Return the
instrument to B&K Precision for service and repair to ensure that safety and performance features are
maintained.
For continued safe use of the instrument
• Do not place heavy objects on the instrument.
• Do not obstruct cooling air ow to the instrument.
• Do not place a hot soldering iron on the instrument.
• Do not pull the instrument with the power cord, connected probe, or connected test lead.
• Do not move the instrument when a probe is connected to a circuit being tested.
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.

7
Safety Symbols
Symbol Description
Indicates a hazardous situation which, if not avoided, will result in death or
serious injury.
Indicates a hazardous situation which, if not avoided, could result in death or
serious injury.
Indicates a hazardous situation which, if not avoided, will result in minor or
moderate injury.
Refer to the text near the symbol.
Electric Shock hazard
Alternating current (AC)
Chassis ground
Earth ground
Indicates the In position of the power switch when instrument is ON.
Indicates the Out position of the power switch when instrument is OFF.
Indicates practices not related to physical injury.
Table 1 Safety Symbols

Contents
1 Introduction 11
1.1 Product Overview 11
1.2 Contents 12
1.3 Features 12
1.4 Dimensions 13
1.5 Front Panel 14
1.6 Rear Panel 15
2 Getting Started 16
2.1 Input Power and Fuse Requirements 16
2.2 Fuse Requirements 17
2.3 Check or Replace Fuse 17
3 Basic Front Panel Operations 19
3.1 Keys 19
3.1.1 Function Keys 19
3.1.2 Softkeys 20
3.1.3 Numeric Keypad 20
3.1.4 Navigation Keys 21
3.2 Display 22
3.2.1 Menu 22
4 Source 23
4.1 Source Parameters 23
4.2 Output 24
4.2.1 Channel 24
4.2.2 Output Parameters 24
4.3 View 25
4.3.1 Measure 26
4.4 Graph 28
4.5 Save 28
4.6 Recall 29
4.7 Prot Clr 29
5 Cong 30
5.1 Cong1 30
5.1.1 Output Speed 31
5.1.2 Voltage Range 32
5.1.3 Current Sense 33
5.1.4 Over Voltage Protection 34

9
5.1.5 Voltage Limit 35
5.1.6 Current Limit 36
5.1.7 Output Delay 37
5.2 Conf 2 38
5.2.1 Output-o State 39
5.2.2 Over Current Protection 40
5.2.3 Trace State 41
5.2.4 Trigger Mode 42
5.2.5 Ext_ON/OFF Mode 43
5.2.6 Ext_ON/OFF State 44
5.2.7 Digital Function 45
5.3 Conf 3 46
5.3.1 Current Low Range 47
6 Graph 48
6.1 Channel 49
6.2 Scope 49
6.3 Knob 50
6.4 Trig Set 51
6.5 Auto 52
6.6 V_Range 52
6.7 I_Range 53
6.8 Run/Hold 54
7 Battery 55
7.1 Start 56
7.2 Channel 56
7.3 Mode 56
7.4 Cong 59
7.5 Capacity Clear 61
7.6 Manual 61
8 List 64
8.1 List Setup 65
8.1.1 List Parameters 65
8.2 Edit List 66
8.2.1 Step Parameters 67
8.3 Sequence Sel 68
8.3.1 Running a List 69
8.3.2 External Import 70
9 Math 71
9.1 Filter 72
9.1.1 Filter Channel 72

10
9.1.2 Filter State 72
9.1.3 Filter Type 73
9.1.4 Sample Rate 74
9.1.5 Sample Count 74
9.2 Buer 75
9.2.1 Buer Channel 75
9.2.2 Buer Size 75
9.2.3 Buer Statistics 76
9.2.4 Buer Mode 77
9.2.5 Auto Clear 78
9.2.6 Clear 79
9.2.7 Export to USB 79
10 System 80
10.1 Sys Log 81
10.2 Sys Conf 83
10.2.1 Date 83
10.2.2 Time 83
10.2.3 Brightness 84
10.2.4 Beep 84
10.2.5 System Reset 85
10.2.6 System Self-Test 86
10.2.7 System Protection Clear 87
10.3 Sys Info 88
10.4 Sys Comm 89
10.4.1 USBTMC 90
10.4.2 LAN 91
10.5 Sys Cal 93
11 Service Information 94
12 LIMITED THREE-YEAR WARRANTY 95

Introduction
1.1 Product Overview
BCS6401 BCS6402
Figure 1.1 Front View
The BCS6401 and BCS6402 battery charger/simulator and precision sources are optimized for testing
low power batteries and battery-operated devices. Both models feature source/sink capabilities, a bipolar
output, and variable output impedance to charge, discharge, or simulate low power batteries.
Model BCS6401 BCS6402
Channels 2 1
Voltage
CH1 CH2
±30 VHigh ±15 V 0 to15 V
Low ±9 V 0 to 9 V
Current(Source
/ Sink)
High 3 A ±5 A
Low 5 A
Power 45 W per channel 150 W
Table 1.1 Models

Introduction 12
1.2 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:
• 1 x BCS6401 or BCS6402
• 1 x AC Power Cord
• 1 x Certicate of Calibration
Note:
Ensure the presence of all the items above. Contact
the distributor or B&K Precision if anything is missing.
1.3 Features
• Dual channel and dual range operation (BCS6401 only)
• Accurate Battery Simulation
• Oscilloscope waveform display (DSO)
• Ultrafast transient response time < 50us
• Ultrafast Voltage rising time up to 500us (full load)
• Current readback resolution up to 100nA
• Built-in high accuracy DVM
• Variable output impedance
• Relay out function achieves electrical isolation on terminals
• Overvoltage (OVP), overcurrent (OCP), and overtemperature (OTP)
• USB (USBTMC-compliant) and LAN interfaces standard

Introduction 13
1.4 Dimensions
Model BCS6401 BCS6402
Dimensions
(WxHxD) 8.9” x 3.5” x 18.75” (226 x 88.2 x 476.26 mm)
Weight 19.85lbs (9 kg) 17.64lbs (8 kg)
Table 1.2 Dimensions and Weight
Figure 1.2 Dimensions

Introduction 14
1.5 Front Panel
Figure 1.3 Front Panel
Item Name Description
1 USB Host Port USB port used to connect external ash drives.
2 Display Visual presentation of the device function and measurements.
3 Softkeys Invoke any functions displayed in the right soft front panel menu.
4 Numeric Keypad Enters numeric values.
Press the [OK] to complete the entry.
5 Rotary Knob Navigate through the control dialog windows or congure parameters.
6 Navigation Keys Navigate through the control dialog windows.
Press the [OK] key to select a control.
7 Function Keys Frequently used function such as Home, Trig, Menu, ESC, and On/O keys.
8 CH 2 Terminals Serves as output or input terminals of CH 2 depending on the set functionality.
9 CH 1 Terminals Serves as output or input of CH 1 depending on the set functionality.
10 Softkeys Invoke any functions displayed in the bottom soft front panel menu.
11 Power Switch Power the instrument ON or OFF.
Table 1.3 Front Panel

Introduction 15
1.6 Rear Panel
Figure 1.4 Rear Panel
Item Name Description
1 Vent Hole Fan ventilation hole.
2 CH 1 Terminals CH 1’s sense line, DVM and output/input terminals.
3 CH 2 Terminals CH 2’s sense line, DVM and output/input terminals.
4AC power input
& fuse box Houses the fuse-holder assembly and the AC inlet.
5 I/O Terminal Digital I/O provides the Ext Trigger, Ext On/O, DIGio and RIDFi functions.
6 USB port Connect a USB type B to type A to remotely control the unit.
7 LAN port Connect a Cat 5/6 Ethernet straight-through patch cable to remotely control
the instrument.
Table 1.4 Front Panel

Getting Started
Before connecting and powering up the instrument, please review and go through the instructions in this
chapter.
2.1 Input Power and Fuse Requirements
The supply has a universal AC input that accepts line voltage input within:
BCS6401 BCS6402
Voltage 100 - 240 VAC (+/- 10 %)
Frequency 50/60 Hz
Input Power 350 VA MAX 500 VA MAX
Table 2.1 Line Rating
Before connecting to an AC outlet or external power source, be sure that the power switch is in the OFF
position and verify that the AC power cord, including the extension line, is compatible with the rated
voltage/current and that there is sucient circuit capacity for the power supply. Once veried, connect
the cable rmly.
The included AC power cord is safety certied for this instrument operating in rated range. To
change a cable or add an extension cable, be sure that it can meet the required power
ratings for this instrument. Any misuse with wrong or unsafe cables will void the warranty.

Getting Started 17
2.2 Fuse Requirements
An AC input fuse is necessary when powering the instrument. The below table shows the fuse requirements.
Line Fuse
BCS6401 110 / 220 Vac 5 AT
220 / 240 Vac 3.15 AT
BCS6402 110 / 220 Vac 5 AT
220 / 240 Vac 2.5 AT
Table 2.2 Fuse Requirements
2.3 Check or Replace Fuse
For safety, no power should be applied to the instrument while changing line voltage
operation. Disconnect all cables connected to the instrument before proceeding.
• Locate the fuse box next to the AC input connector in the rear panel. See 1.6
• With a small at blade screwdriver, insert into the fuse box slit to pull and slide out the fuse box as
indicated below.
• Check and replace fuse if necessary (see gure 2.1).
Figure 2.1 Fuse Removal

Getting Started 18
Any disassembling of the case or changing the fuse not performed by an
authorized service technician will void the warranty of the instrument.

Basic Front Panel Operations
At power-on, the power supply will automatically enter the home page, where the power supply functionality
can be congured.
3.1 Keys
The BCS6400 has four main key section:
–Function Keys –Numeric Keypad –Softkeys –Navigation Keys
3.1.1 Function Keys
Figure 3.1 Function Keys
Key Description
Home Returns to home page. Source is set as the home page.
Trig Triggers the dened events when trigger is set to manual.
ESC Used to cancel a conguration or to exit a menu.
Menu Opens the menu. See Figure 3.5 to view the available menu pages.
On/O Used to toggle CH 1 output status.
On/O Used to toggle Ch 2 output status.
Table 3.1 Function Keys

Basic Front Panel Operations 20
3.1.2 Softkeys
The unit has two sets of Softkeys. The rst set are located below the display and consist of 5 horizontal
softkeys. These keys will be referred to as F1- F5 from left to right. The second set are located to the
right of the display and consist of 4 vertical softkeys. These keys will be referred to as F6-F9 from top to
bottom.
Figure 3.2 Softkeys
3.1.3 Numeric Keypad
The numeric keys allow the conguration of various parameters. Using the numeric keys provides a fast
and precise input. The ±assigns the polarity of the set value.
Figure 3.3 Numeric Keypad