B+K precision 4014B User manual

Model: 4014B, 4040B
DDS Function
Generator
USER MANUAL
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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
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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.
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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.
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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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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.
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CE Declaration of Conformity
The function generators meet the requirements of
2006/95/EC Low Voltage Directive and 2004/108/EC
Electromagnet Compatibility Directive with the
following standards.
Low Voltage Directive
- EN61010-1:2010
Safety requirements for electrical
equipment for measurement, control,
and laboratory use-Part 1
EMC Directive
- EN61326-1:2006
- EN61000-3-2 (2006+A2:2009)
- EN61000-3-3 (2008)
- EN61000-4-2 (2009)/-3
(2006+A2:2010)/-4 (2004+A1:2010)/-5
(2006)/-6 (2009)/-11 (2004)
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1INTRODUCTION .................... 11
1.1 Introduction ...........................................11
1.2 Description ............................................11
1.3 Specifications........................................11
2INSTALLATION ..................... 16
2.1 Introduction ...........................................16
2.2 Package Contents ................................16
2.4 Instrument Mounting .............................17
2.5 Power Requirements ............................17
2.6 Fuse Replacement ................................18
2.7 Grounding Requirements ......................18
2.8 Signal Connections ...............................19
3OPERATING INSTRUCTIONS
20
3.1 General Description ..............................20
3.2 Display Window ....................................21
3.3 Front Panel Controls .............................22
3.4 Connectors ...........................................22
3.5 Output Connections ..............................23
3.6 MENU Keys ..........................................24
3.6.1 WAVEFORM Keys........................24
3.6.2 MODE Key....................................26
3.6.3 UTILITY Key.................................29
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1
3.6.4 SWEEP Key..................................31
3.6.5 MODULATION Key.......................33
3.7 ON Key ................................................. 36
3.8 Cursor Keys .......................................... 36
3.9 Rotary Input Knob ................................. 37
3.10 Power-On Settings .............................. 37
3.11 Memory .............................................. 38
3.12 Displaying Errors ................................ 38
3.13 Quick Start .......................................... 39
3.13.1 Selecting a Standard Waveform.39
3.13.2 Setting the Output ......................40
3.13.3 Using Voltage Offset ..................40
3.13.4 Storing and Recalling a Waveform
Generator Setup.......................................40
4PROGRAMMING ................... 42
4.1 Overview ............................................. 42
4.1.1 Connecting to USB (Virtual COM)
Interface...................................................42
4.1.2 USB (Virtual COM) Settings..........49
4.2 Device States ...................................... 49
4.2.1 Local State (LOCS).......................49
4.2.2 Remote State (REMS)...................49
4.3 Message Exchange Protocol ............... 50
4.3.1 The Input Buffer ............................50
4.3.2 The Output Queue ........................50
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4.3.3 Response Messages....................51
4.4 Instrument Identification .......................51
4.5 Instrument Reset .................................51
4.6 Command Syntax ...............................51
4.6.1 General Command Structure........51
4.7 Status Reporting ..................................56
4.7.1 The Error Queue...........................56
4.7.2 Error Codes..................................57
4.8 COMMON COMMANDS ......................61
4.8.1 System Data Commands..............61
4.8.2 Internal Operation Commands......62
4.8.3 Device Trigger Commands...........62
4.8.4 Stored Settings Commands..........63
4.9 INSTRUMENT CONTROL COMMANDS
....................................................................64
4.9.1 Default Subsystem........................65
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1
1 Introduction
1.1 Introduction
This manual contains information required to operate the
B&K Precision model 4014B and 4040B DDS Function
Generators. This section covers the instrument’s general
description, specifications and characteristics.
1.2 Description
The 4014B and 4040B are versatile high performance
function generators. Implemented using a DDS (direct
digital synthesis) architecture, these instruments
generate stable and precise sine, square, and triangle
waveforms. Both models also provide linear and
logarithmic sweep for users needing sweep capability. An
auxiliary TTL output at the generator’s frequency is
available to synchronize external devices. The instrument
can also be remotely operated via the USB interface and
is SCPI compatible.
1.3 Specifications
Model
4014B
4040B
Frequency Characteristics
Sine
0.01 Hz – 12 MHz
0.01 Hz – 20 MHz
Square
0.01 Hz – 12 MHz
0.01 Hz – 20 MHz
Triangle
0.01 Hz – 1 MHz
0.01 Hz – 2 MHz
Accuracy
0.01% + 0.006 Hz
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Resolution
*6 digits or 10 mHz
Output Characteristics
Amplitude
Range
10 mVp-p to 10 Vp-p (into 50 Ω)
20 mVp-p to 20 Vp-p (open circuit)
Resolution
3 digits (1000 counts)
Amplitude
Accuracy
± 2 % ± 20 mV of programmed output from 1.01
V – 10 V
Flatness
± 0.5 dB to 1 MHz
± 1 dB to 12 MHz
± 0.5 dB to 1 MHz
± 1 dB to 20 MHz
Offset Range
- 4.99 V to 4.99 V (into 50 Ω)
Offset
Resolution
10 mV, 3 digits
Offset Accuracy
± 2 % ± 10 mV (into 50 Ω)
Output
Impedance
50 Ω ± 2 %
Output
Protection
Protected against short circuit or accidental
voltage practically available in electronic
laboratories, applied to the main output
connector
Waveform Characteristics
**Harmonic
Distortion
0 – 1 MHz, < -60 dBc
1 MHz – 5 MHz,
< -50 dBc
5 MHz – 12 MHz ,
< -45 dBc
0 – 1 MHz, < -60 dBc
1 MHz – 5 MHz,
< -50 dBc
5 MHz – 12 MHz ,
< -45 dBc
12 MHz – 20 MHz,
< -50 dBc
Square Rise/Fall
Time
< 20 ns (10% to 90% at full amplitude into 50 Ω)
Variable Duty
Cycle
Square: 20% to 80 %, up to 2 MHz
Triangle: 1 % to 99 % in 1% steps, up to 200 kHz
Symmetry
Accuracy at 50%
± 1 %
Operating Modes
Continuous
Output continuous at programmed parameters
Triggered
Output quiescent until triggered by an internal or
external trigger, at which time one waveform
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1
cycle is generated to programmed parameters.
Frequency of waveform cycle is limited to 1 MHz.
Gate
-
Same as triggered
mode, except waveform
is executed for the
duration of the gate
signal. The last cycle
started is completed.
Burst
-
2 – 65535 cycles
Trigger Source
Trigger source may be internal, external, or
manual. Internal trigger rate 0.1 Hz – 1 MHz
(1μs – 10 s)
Modulation Characteristics
Amplitude
Modulation
Internal
0.1 Hz – 20 kHz sine
only
0.1 Hz – 20 kHz sine,
square, or triangle
waveform
External
5 Vp-p for 100% modulation, 10 kΩ input
impedance
Frequency
Modulation
Internal
0.1 Hz – 20 kHz sine
only
0.1 Hz – 20 kHz sine,
square, or triangle
waveform
External
5 Vp-p for 100% modulation, 10 kΩ input
impedance
Sweep Characteristics
Sweep Shape
Linear or Logarithmic, up or down
Sweep Time
10 ms to 100 s
Input and Output
Trigger IN
TTL compatible
Maximum rate 1 MHz
Minimum width > 50 ns
Input impedance 1 kΩ
Sync OUT
TTL pulse at programmed frequency
50 Ω source impedance
Modulation IN
5 Vp-p for 100% modulation
10 kΩ input impedance
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DC to > 20 kHz minimum bandwidth
Counter Characteristics
Range
50 Hz to 25 MHz
Resolution
Auto ranging, up to 8 digits
Accuracy
± 0.02 % ± 2 digits
Sensitivity
100 mVrms typical
General
Memory Storage
Store up to 10
instrument settings
Store up to 20
instrument settings
Power
Requirements
100 V – 240 V AC ± 10% (90 V – 264 VAC)
Max. Power
Consumption
< 25 VA
< 30 VA
Operating
Temperature
0 °C – 50 °C
Storage
Temperature
-10 °C – 70 °C
Humidity
95% RH, 0 °C – 30 °C
Dimensions
213 mm x 88 mm x 210 mm (WxHxD)
Weight
Approx. 2.5 kg
Safety
Standards
EN55011 for radiated and conducted emissions
EN55082
EN61010
*For square wave, resolution is up to 4 digits when frequency is > 20
kHz.
**For sine wave at 5 Vp-p into 50 Ω.
Note: All specifications apply to the unit after a
temperature stabilization time of 15 minutes over an
ambient temperature range of 23 °C ± 5 °C.
Specifications are subject to change without notice.
To ensure the most current version of this manual,
please download the latest version
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2 Installation
2.1 Introduction
This section contains installation information, power
requirements, initial inspection and signal connections for
the 4014B and 4040B signal generators.
2.2 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 generator is shipped
with the following contents:
 4014B or 4040B DDS function generator
 AC Power Cord
 USB (type A to B) interface cable
 Manual contained on CD
 Certificate of Calibration
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
2.4 Instrument Mounting
The 4014B and 4040B Function Generators are intended
for bench use. The instrument includes a front feet tilt
mechanism for optimum panel viewing angle. The
instrument does not require special cooling when
operated within conventional temperature limits. It may
be installed in a closed rack or test station if proper air
flow can assure removing about 15 W of power
dissipation.
2.5 Power Requirements
The function generators can be operated from any
source of 90V to 264V AC, frequency from 48Hz to 66Hz.
The maximum power consumption is 25
VA(4014B)/30VA(4040B). Use a slow blow fuse of 1A,
UL/CSA approved as indicated on the rear panel of the
instrument.
The instrument power fuse is located in the AC input
plug. To access the fuse, first disconnect the power cord
and then remove the fuse box.
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2.6 Fuse Replacement
There is a 1A, 250V rated slow blow fuse at the AC input.
Should the fuse ever get blown, follow the steps below to
replace:
1. Locate the fuse box next to the AC input connector in
the rear panel.
2. With a small flat blade screwdriver, insert into the fuse
box slit to pull and slide out the fuse box as indicated
below.
3. Check and replace fuse if necessary.
2.7 Grounding Requirements
For the safety of operating personnel, the instrument
must be grounded. The central pin on the AC plug
grounds the instrument when properly connected to the
ground wire and plugged into proper receptacle.
Fuse box slit
Fuse box
Check/Remove Fuse
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1
WARNING
TO AVOID PERSONAL INJURY DUE TO SHOCK,
THE THIRD WIRE EARTH GROUND MUST BE
CONTINUOUS TO THE POWER OUTLET. BEFORE
CONNECTION TO THE POWER OUTLET, EXAMINE
ALL CABLES AND CONNECTIONS BETWEEN THE
UNIT AND THE FACILITY POWER FOR A
CONTINUOUS EARTH GROUND PATH.
THE POWER CABLE MUST MEET IEC SAFETY STANDARDS.
2.8 Signal Connections
Use RG58U 50Ω or equivalent coaxial cables for all input
and output signals to and from the instrument.
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3 Operating Instructions
3.1 General Description
This section describes the displays, controls and
connectors of the function generator.
All controls for the instrument local operation are located
on the front panel
1
Power Button
Power ON/OFF unit
2
LCD Display
Displays all instrument data
and settings
3
Function Keys
F1 – F4 function keys to select
menu options
1
2
3
4
5
6
7
9
8
10
11
12
13
14
15
16
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1
4
Waveform
Buttons
Select Sine, Ramp/Triangle,
Square waveform shape
5
Numeric
Keypad
Enter numeric values for
parameters
6
Units Keys
Select unit of frequency, time,
or voltage
7
Rotary Knob
Increment/decrement numerical
values or menu selections
8
Cursor Keys
Move cursor (when visible) left
or right
9
Enter Key
Confirm parameter entries
10
Output
ON/OFF
Enable/Disable Output
11
Output BNC
Main output
12
SYNC OUT
BNC
Sync output
13
UTIL Button
Utility menu
14
MODUL
Button
Selects Modulation menu
15
SWEEP
Button
Selects Sweep function menu
16
MODE Button
Selects Trigger mode menu
3.2 Display Window
The function generator has a color LCD display that can
display up to 400 x 240 dots. When powering on the unit, sine
waveform is selected and current settings will appear in the
display. The bottom of the display shows a menu (selectable
with function keys) that corresponds to the function, parameter,
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