B&K Precision 4005DDS User Manual
Model 4005DDS
5 MHz DDS Function Generator
INSTRUCTION MANUAL
1 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.
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
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.
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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 ESDsensitive components.
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 parts or the entire product.
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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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Contents
1 Safety Summary ......................................................................................................... 1
2 Introduction ................................................................................................................. 5
3 Installation ................................................................................................................... 5
3.1 Initial Inspection .............................................................................................. 5
3.2 Input Power Requirements .......................................................................... 6
4 Controls and Indicators .......................................................................................... 7
4.1 Front Panel Description ................................................................................ 7
4.2 Rear Panel Description .................................................................................. 8
5 Operating Instructions ............................................................................................ 9
5.1 Function Generator Output .......................................................................... 9
5.2 Duty Cycle Control ........................................................................................ 10
5.3 Function Generator Display Messages ................................................. 10
6 Specifications ........................................................................................................... 11
7 Certification .............................................................................................................. 13
8 Maintenance ............................................................................................................. 14
8.1 Preventive Steps ............................................................................................ 14
8.2 When the Unit is Not Turning On ........................................................... 14
8.3 Fuse Replacement ......................................................................................... 15
8.4 Instrument Repair Service ........................................................................ 15
9 Service Information ............................................................................................... 16
10 Limited One-Year Warranty ............................................................................... 17
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2 Introduction
Description
The B&K Precision model 4005DDS is a versatile 5 MHz DDS (direct digital synthesis)
function generator with display up to 4 digits. The instrument generates sinusoidal,
triangular, and square waveforms over the 1 Hz to 5 MHz range. The output voltage
can be varied from 0 to 10 Vp-p into 50 ohms or to 20 Vp-p into open circuit. A
continuously variable DC offset allows the output to be injected directly into circuits
at the correct bias level.
Features
Frequency is selectable from 1 Hz to 5 MHz
Sine, square, or triangle waveform output
Direct digital synthesis (DDS) architecture
Bright, easy-to-read LED display
Number pad for quick input of frequency
Front panel push button and pull knob can attenuate output by up to 40 dB
3 Installation
3.1 Initial Inspection
This unit is tested prior to shipment. It is therefore ready for immediate use upon
receipt. The initial physical inspections should be made to ensure that no damage has
been sustained during shipment.
Inspect the packing box on receipt for any external damage. If any external damage is
evident, remove the instrument and visually inspect its case and parts for any
damage. If damage to the instrument is evident, a description of the damage should
be noted on the carrier’s receipt and signed by the driver or carrier agent. Save all
shipping packaging for inspection and contact the distributor from where the
instrument was purchased.
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