B+K precision 4075B User manual

Model: 4075B, 4076B, 4077B, 4078B, 4079B, 4080B
Arbitrary/Function Waveform Generator
USER MANUAL
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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 specified 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 defines 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 defines 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.
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.
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Do not use this instrument in an electrical environment with a higher category rating than what is
specified 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 120 V RMS or 240 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.
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 flammable atmosphere
Do not operate the instrument in the presence of flammable gases or vapors, fumes, or finely-divided
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particulates.
The instrument is designed to be used in office-type indoor environments. Do not operate the
instrument
 In the presence of noxious, corrosive, or flammable fumes, gases, vapors, chemicals, or finely-
divided particulates.
 In relative humidity conditions outside the instrument's specifications.
 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 specified operating temperatures.
 In atmospheric pressures outside the specified altitude limits or where the surrounding gas is
not air.
 In environments with restricted cooling air flow, even if the air temperatures are within
specifications.
 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 50 °C and the operating humidity is ≤ 95 % relative humidity at < 30 °C,
with no condensation allowed.
Measurements made by this instrument may be outside specifications if the instrument is used in
non-office-type environments. Such environments may include rapid temperature or humidity
changes, sunlight, vibration and/or mechanical shocks, acoustic noise, electrical noise, strong electric
fields, or strong magnetic fields.
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 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
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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 qualified 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 first 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
Fuse replacement must be done by qualified service-trained maintenance personnel who are aware
of the instrument's fuse requirements and safe replacement procedures. Disconnect the instrument
from the power line before replacing fuses. Replace fuses only with new fuses of the fuse types,
voltage ratings, and current ratings specified 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 fire. Failure to use the
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specified 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.
Cooling fans
This instrument contains one or more cooling fans. For continued safe operation of the instrument,
the air inlet and exhaust openings for these fans must not be blocked nor must accumulated dust or
other debris be allowed to reduce air flow. Maintain at least 25 mm clearance around the sides of the
instrument that contain air inlet and exhaust ports. If mounted in a rack, position power devices in
the rack above the instrument to minimize instrument heating while rack mounted. Do not continue
to operate the instrument if you cannot verify the fan is operating (note some fans may have
intermittent duty cycles). Do not insert any object into the fan's inlet or outlet.
For continued safe use of the instrument
 Do not place heavy objects on the instrument.
 Do not obstruct cooling air flow 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.
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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.
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CE Declaration of Conformity
This instrument meets the requirements of 2006/95/EC Low Voltage Directive and 2004/108/EC
Electromagnetic Compatibility Directive with the following standards.
Low Voltage Directive
- EN61010-1: 2001
EMC Directive
- EN 61000-3-2: 2006
- EN 61000-3-3: 1995+A1: 2001+A2: 2005
- EN 61000-4-2 / -3 / -4 / -5 / -6 / -11
- EN 61326-1: 2006
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Safety Symbols
Refer to the user manual for warning information
to avoid hazard or personal injury and prevent
damage to instrument.
Electric Shock hazard
Alternating current (AC)
Chassis (earth ground) symbol.
Ground terminal
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.
Power Switch (On/Off). This is the power switch
located in front of the instrument.
CAUTION indicates a hazardous situation which, if
not avoided, will result in minor or moderate injury
WARNING indicates a hazardous situation which, if
not avoided, could result in death or serious injury
DANGER indicates a hazardous situation which, if
not avoided, will result in death or serious injury.
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Contents
Safety Summary.............................................................................................. i
Compliance Statements........................................................................................................ vi
Safety Symbols.................................................................................................................... viii
1General Information ........................................................................... 1
1.1 Product Overview.........................................................................................................1
1.2 Package Contents .........................................................................................................1
1.3 Front Panel Overview ................................................................................................... 2
Front Panel Description ................................................................................................ 2
1.4 Rear Panel Overview ....................................................................................................3
Rear Panel Description .................................................................................................3
1.5 Display Overview.......................................................................................................... 4
Display Description....................................................................................................... 4
2Getting Started ................................................................................... 4
2.1 Input Power Requirements ..........................................................................................5
Input Power .................................................................................................................. 5
2.2 Output Connections .....................................................................................................5
Impedance Matching....................................................................................................6
2.3 Preliminary Check......................................................................................................... 6
Output Check................................................................................................................ 6
3Operating Instructions ........................................................................ 7
3.1 Menu Keys ....................................................................................................................7
Menu Tree..................................................................................................................... 7
PARAMETER Key ......................................................................................................... 10
WAVEFORM Key.......................................................................................................... 12
PULSE Menu ............................................................................................................... 18
MODE Key................................................................................................................... 18
SWEEP Key.................................................................................................................. 20
MODULATION Key ......................................................................................................21
SETUPS Key ................................................................................................................. 23
UTILITY Key ................................................................................................................. 25
3.2 ON Key........................................................................................................................ 26
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3.3 Cursor Movement Keys ..............................................................................................26
3.4 Rotary Input Knob ...................................................................................................... 26
3.5 Power-On Settings...................................................................................................... 26
3.6 Memory...................................................................................................................... 27
3.7 Displaying Errors.........................................................................................................28
3.8 Creating an Arbitrary Waveform ................................................................................29
Entering Individual Data Points .................................................................................. 29
Creating a Complex Arbitrary Waveform ................................................................... 30
Setting the Frequency................................................................................................. 32
Setting the Amplitude................................................................................................. 33
Loading an Arbitrary Waveform................................................................................. 33
3.9 Remote Interface........................................................................................................ 33
USB Interface.............................................................................................................. 33
GPIB Interface............................................................................................................. 34
4Programming .................................................................................... 35
4.1 Overview ....................................................................................................................35
GPIB ............................................................................................................................ 35
4.2 Device State................................................................................................................ 35
Local State (LOCS)....................................................................................................... 35
Local With Lockout State (LWLS) ................................................................................ 35
Remote State (REMS) ................................................................................................. 35
Remote With Lockout State (RWLS) ........................................................................... 35
4.3 Interface Function Subsets......................................................................................... 35
4.4 Device Address ........................................................................................................... 35
4.5 Message Exchange Protocol....................................................................................... 36
The Input Buffer.......................................................................................................... 36
The Output Queue ......................................................................................................36
Response Messages.................................................................................................... 36
Coupled Commands.................................................................................................... 36
4.6 Block Data................................................................................................................... 37
4.7 Instrument Identification ........................................................................................... 38
4.8 Instrument Reset........................................................................................................38
4.9 Self-test ...................................................................................................................... 38
4.10 Command Syntax........................................................................................................ 38
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General Command Structure...................................................................................... 38
SCPI Command Structure ........................................................................................... 41
4.11 Status Reporting.........................................................................................................43
The Status Byte........................................................................................................... 43
Service Request Enabling............................................................................................ 43
Standard Event Status Register .................................................................................. 43
The Error Queue .........................................................................................................44
Error Codes ................................................................................................................. 44
4.12 Common Commands.................................................................................................. 48
System Data Commands............................................................................................. 48
Internal Operation Commands................................................................................... 48
Synchronization Commands ....................................................................................... 49
Status and Event Commands...................................................................................... 49
Device Trigger Commands.......................................................................................... 51
Stored Settings Commands ........................................................................................ 51
4.13 Instrument Control Commands.................................................................................. 52
SOURce Subsystem ..................................................................................................... 52
OUTPut Subsystem ..................................................................................................... 68
Trigger Subsystem ...................................................................................................... 69
Arbitrary Subsystem ................................................................................................... 71
Status Subsystem........................................................................................................ 80
System Subsystem ......................................................................................................84
4.14 IEEE 488.1 Interface Messages................................................................................... 87
GET - Group Execute Trigger....................................................................................... 87
DCL - Device Clear....................................................................................................... 87
SDC - Selected Device Clear ........................................................................................ 87
LLO - Local Lockout ..................................................................................................... 87
4.15 SCPI Command Tree ................................................................................................... 88
Root Node................................................................................................................... 88
:SOURce Subsystem .................................................................................................... 88
:OUTPut Subsystem .................................................................................................... 88
:TRIGger Subsystem....................................................................................................89
:ARBitrary Subsystem ................................................................................................. 89
:STATus Subsystem......................................................................................................90
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:SYSTem Subsystem.....................................................................................................90
4.16 Block Transfer (GPIB only) ..........................................................................................92
4.17 GPIB Communication Protocol................................................................................... 94
General ....................................................................................................................... 94
Responses to IEEE-488.1 Interface Messages ............................................................ 94
IEEE 488.2 Interface Function Subsets........................................................................ 97
5Troubleshooting Guide...................................................................... 98
6Specifications.................................................................................... 99
SERVICE INFORMATION ............................................................................. 103
LIMITED THREE-YEAR WARRANTY.............................................................. 104
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1General Information
1.1 Product Overview
The B&K Precision 4075B series are versatile high performance arbitrary/function waveform
generators capable of generating arbitrary waveforms with 14-bit resolution and length up to
16,000,000 points. In addition to the large waveform memory, these generators offer AM, FM, and FSK
modulation along with sweep, burst, and flexible triggering capabilities. The instrument can be
remotely operated via the USBTMC or GPIB (IEEE-488.2) interface supporting SCPI commands. Users
can create arbitrary waveforms directly from the front panel using the generator’s built-in waveform
editing functions or load arbitrary waveforms via the instrument’s remote interfaces.
Features:
 14-bit, 200 MSa/s, and up to 16M points arbitrary waveform generator
 Generate Sine waveforms up to 80 MHz, Square waveforms up to 60 MHz
 Color LCD display
 AM, FM, and FSK modulation functions
 Fully programmable markers
 Store/recall up to 49 different instrument setups
 Standard USBTMC and GPIB (50 MHz/80 MHz models only) interfaces
 SCPI-compliant command set
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 instrument is shipped with the following contents:
 1 x 4075B, 4076B, 4077B, 4078B, 4079B, or 4080B waveform generator
 1 x Full instruction manual on CD
 1 x AC power cord
 1 x USB type A to type B cable
 1 x Certificate of calibration
 1 x Test report
Verify that all items above are included in the shipping container. If anything is missing, please contact
B&K Precision.
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1.3 Front Panel Overview
Figure 1.1 – Front Panel Overview
Front Panel Description
Power On/Off Switch
Function Keys (F1-F5)
UTILITY Key
CHANNEL Key (4078B, 4079B, and 4080B only)
ENTER Key
Channel Output BNC (50 Ω) and Enable
Rotary Knob and Cursor Keys
Unit Setting Keys
Numeric Keypad
Menu Option Keys
Color LCD Display Window
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2
3
4
5
6
7
8
9
10
11
(For Models
4075B, 4076B,
and 4077B)
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1.4 Rear Panel Overview
Figure 1.2 – Rear Panel Overview
Rear Panel Description
Modulation Input BNC
External Trigger Input BNC
Sync Output BNC
Marker Output BNC
10 MHz Reference Output BNC
10 MHz Reference Input BNC
USBTMC interface
Earth Ground
AC Power Connector and Fuse Box
Rear Cooling Fan
GPIB Port (4076B, 4077B, 4079B, and 4080B only)
Channel 2 I/O (4078B, 4079B, and 4080B only)
Channel 1 I/O
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7
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12
13
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2
3
4
9
11
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6
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12
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1.5 Display Overview
Figure 1.3 – Display Overview
Display Description
Wave Type
Trigger Mode
Frequency
Menu Parameters Values
Menu Options
Menu Title
General Waveform Display
Channel Selection Indicator
2Getting Started
Before connecting and powering up the instrument, please review and go through the instructions in
this chapter.
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3
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6
7
8
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4
8
2
1
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2.1 Input Power Requirements
Input Power
The instrument has a universal AC input that accepts line voltage and frequency input within:
100 – 240 V (+/- 10%), 50 – 60 Hz (+/- 5%)
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 sufficient circuit capacity for the power supply. Once verified, connect
the cable firmly.
The included AC power cord is safety certified 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.
2.2 Output Connections
The waveform generator output circuits are protected against short circuit or nominal accidental
voltages applied to the main output connector. The output circuits operate as a 50 Ω voltage source
working into a 50 Ω load. At higher frequencies, a non-terminated or improperly terminated output
may cause aberrations on the output waveform. In addition, loads with an impedance less than 50 Ω
will reduce the waveform amplitude, while loads with an impedance greater than 50 Ω will increase
waveform amplitude.
Excessive distortion or aberrations caused by improper termination are less noticeable at lower
frequencies, especially with sine and triangle waveforms. To ensure waveform integrity, follow these
precautions:
1. Use good quality 50 Ωcoaxial cable and connectors.
2. Make all connections tight and as short as possible.
3. Use good quality attenuators, if it is necessary to reduce waveform amplitudes applied to sensitive
circuits.
4. Use termination or impedance-matching devices to avoid reflections.
5. Ensure that attenuators and terminations have adequate power handling capabilities.
If there is a DC voltage across the output load, use a coupling capacitor in series with the load. The
time constant of the coupling capacitor and load must be long enough to maintain pulse flatness.
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Impedance Matching
If the waveform generator is driving a high impedance, such as a 1 MΩ input impedance (paralleled by
a stated capacitance) of an oscilloscope vertical input, connect the transmission line to a 50 Ω
attenuator, a 50 Ω termination and to the oscilloscope input. The attenuator isolates the input
capacitance of the device and terminates the waveform generator properly.
2.3 Preliminary Check
Complete the following steps to verify that the generator is ready for use.
1. Verify AC Input Voltage
Verify and check to make sure proper AC voltages are available to power the instrument. The AC
voltage range must meet the acceptable specification as explained in section 2.1.
2. Connect Power
Connect AC power cord to the AC receptacle in the rear panel and press the power switch to the
ON position to turn ON the instrument. The instrument will have a boot screen while loading, after
which the main screen will be displayed.
3. Self Adjust
At power-on, the waveform generator performs a diagnostic self-test procedure to check itself for
errors. If it finds an error, an error code and text will appear in the display window. Other error
codes appear when you enter an invalid front-panel setting. For more information on error codes,
see the Displaying Errors section 3.7. When the waveform generator finishes the diagnostic self-
test routine, it enters the local state (LOCS) and assumes power-on default settings.
Output Check
Follow the steps below to do a quick check of the settings and waveform output.
1. Turn on the instrument and set the instrument to default settings. To set to default, press Setups,
press Recall, and select 0 Default Setup. The instrument will set both channels with the following
parameters:
Waveform Shape: Sine
Frequency: 1.000000000 kHz
Amplitude: 5 .000 Vpp
Offset: 0.000 Vdc
Phase: 0.0 °
Output Impedance: 50 OHM
2. Connect the BNC output of CH1 into an oscilloscope.
3. Press the On button on top of CH1 output BNC to turn on the output and observe a sine wave with
the parameters above.
4. Press the Freq option in the menu and use the rotary knob or the numeric keypad to change
frequency. Observe the changes on the oscilloscope display.
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5. Press the Ampl option in the menu and use the rotary knob or the numeric keypad to change the
amplitude. Observe the changes on the oscilloscope display.
6. Press the Offset option in the menu and use the rotary knob or the numeric keypad to change the
DC offset. With the oscilloscope set for DC coupling, observe the changes on the display.
7. Now, connect the BNC output of CH2 into an oscilloscope and follow steps 3 to 6 to check its
output.
3Operating Instructions
3.1 Menu Keys
These keys select the main menus for displaying or changing a parameter, function or mode. Below is
the hierarchy and selections of the menu tree.
Menu Tree
- PARAM
o FREQ | RATE (Arb Mode Only)
o AMPL| OFST
o UNITS (Only when AMPL is selected, press to toggle display in Vp-p, Vrms, dBm)
o 50 OHM | HI-Z
o INTCLK | EXTCLK
- WAVE
o SINE
o SQR (Duty Cycle)
o TRI (Symmetry)
o PULSE
 FREQ | PERIOD
 WIDTH
 EQUAL EDGE
 LEAD | TRAIL
 PREV
o ARB
 START
 LENGTH
 MARK
 ADDR
 LENGTH
 ON | OFF
 PREV
 EDIT
 POINT
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