MODEL 4045
20MHz DDS Sweep Function Generator with Arb Function
OPERATING MANUAL
Model 4045 - Instruction Manual
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Model 4045
20MHz DDS Sweep Function Generator with Arb Function
OPERATING MANUAL
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Model 4045 - Instruction Manual
Limited Two-Year Warranty
B&K Precision warrants to the originalpurchaser that its products and the component parts thereof,
willbe free fromdefects in workmanship and materials for a period of tw o years fromdate of
purchase froman authorized B&K Precision distributor.
B&K Precision will, without charge, repair or replace, at its option, defective product or component
parts. Returned product must be accompanied by proof of the purchase date in the formof a sales
receipt.
To obtain warranty coverage in the U.S.A., this product must be registered by completing thew arranty
registration formon www .bkprecision.comw ithin fifteen (15) days of purchase.
Exclusions: This warranty does not apply in the event of misuse or abuse of the product
or as a result of unauthorized alterations or repairs. The warranty is void if the serial
number is altered, defaced or removed.
B&K Precision shallnot be liable for any consequentialdamages, including without limitation damages
resulting fromloss of use. Some states do not allow limitations of incidental or consequentialdamages.
So theabove limitation or exclusion may not apply to you.
This warranty gives you specific rights and you may have other rights, which vary fromstate-to-state.
Service Information
Warranty Service: Please return the product in the originalpackaging withproof of purchase to the
address below. Clearly state in writing the performance problemand return any leads, probes,
connectors and accessories that you are usingw ith the device.
Non-Warranty Service: Return the product in the original packaging to the address below. Clearly
state in writing the performance problemand return any leads, probes, connectors and accessories
that you are using with the device. Customers not on openaccount must include payment in the formof
a money order or credit card. For the most current repair charges please visit www.bkprecision.com
and click on“service/repair”.
Return allmerchandise to B&KPrecision with pre-paid shipping. The flat-rate repair charge for NonWarranty Service does not include return shipping. Return shipping to locations in North American is
included for Warranty Service only. For overnight shipments and non-North American shipping fees
please contact B&KPrecision.
B&K Precision
22820 Savi Ranch Parkway
Yorba Linda, CA 92887
ww w .bkprecision.com
714-921-9095
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Include with the returned instrument your complete return shipping address, contact
name, phone number and description of problem.
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Model 4045 - Instruction 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.
Failure to comply with these precautions or with specific warnings elsewhere in this manual violates
safety standards of design, manufacture, and intended use ofthe instrument. B&K PRECISION
assumes no liability for a customer’s failure to comply with these requirements. This is a Safety Class
I 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 ofthe 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 ofany 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 ofrendering first aid
and resuscitation, is present.
DO NOT SUBSTITUTEPARTS OR MODIFY THE INSTRUMENT
Do not install substitute parts or perform any unauthorized modifications to this instrument. Return the
instrument to TEXIO 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, ifnot
followed correctly, could result in injury or death to personnel.
A CAUTION statement calls attention to an operating procedure, practice, or condition, which, ifnot
followed correctly, could result in damage to or destruction of part or all of the product.
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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
void electrical shock hazard, disconnect power cord before removing
Before connecting the line cord to the AC mains, check the rear panel AC line
r than the indicated voltage can
destroy the AC line fuses. For continued fire protection, replace fuses only
static
ge (ESD). To avoid damage, be sure to follow proper procedures for
handling, storing and transporting parts and subassemblies which contain
meet IEC safety standards.
WARNING: To a
covers. Refer servicing to qualified personnel.
CAUTION:
voltage indicator. Applying a line voltage othe
with those of the specified voltage and current ratings.
CAUTION:
This product uses components which can be damaged by electrodischar
ESD-sensitive components.
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Model 4045 - Instruction Manual
Section 1 Introduction
1.2 Description............................................................................................... 9
1.3 Specifications............................................................................................ 10
Section 2 Installation
2.1 Introduction.............................................................................................. 13
2.2 Mechanical inspection................................................................................. 13
2.4 Instrument mounting.................................................................................. 13
2.5 Power requirements.................................................................................... 13
2.6 Grounding requirements.............................................................................. 14
2.7 Signal connections..................................................................................... 14
2.9 RS-232.................................................................................................... 14
Contents
Section 3 Operating Instructions
3.1 General Description.................................................................................... 15
3.6 Menu Keys............................................................................................... 17
3.7 ON Key ................................................................................................... 25
3.10 Power-on Settings...................................................................................... 25
3.11 Memory................................................................................................... 26
3.13 Using the Model 4045................................................................................ 27
Section 4 Programming
4.1 Overview.................................................................................................. 31
4.8 Command syntax....................................................................................... 32
4.9 Instrument control commands ...................................................................... 38
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Model 4045 – Operating Manual
1.1 Introduction
This manual contains information required to operate, program and test the Model 4045 - 20MHz DDS Sweep
Function Generator with Arb Function. This section covers the instrument general description, instrument
specifications and characteristics.
1.2 Description
The Model 4045 is a versatile high performance arbitrary waveform generator. Arbitrary waveforms can be
programmed and generated with 12 bit resolution and up to 1,000 points length. Waveforms can be output in
continuous, triggered, gated or burst mode. AM and FM modulation combined with versatile Sweep capabilities
make the unit suitable for a wide range of applications.
Editing is flexible and easy including auto increment, line draw and predefined waveform facilities. The instrument
can be remotely operated via the RS232 interface bus and it is SCPI compatible.
1.3 Memory Architecture
Section 1
Introduction
The waveform memory consists of1,000 points. The user can edit arbitrary waveforms in waveform memory and can
specify any data value in the range from -2047 to 2047 for any point in waveform memory.
The following operations can be performed in the waveform memory:
- Insert and scale any ofthe following predefined waveforms:
sine
triangle
square
ramp up
ramp down
noise
- Draw a line between any two points
- Clear (set to zero) any set ofpoints or all points
- Set individual point values
Up to 1000 continuous points ofwaveform memory can be executed by specifying a starting address in waveform
memory and length.
After specifying a section of waveform memory for execution, the following parameters can be set:
- Point rate (frequency)
- Peak-to-peak amplitude
- Offset voltage
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MODEL 4045 - SPECIFICATIONS
GENERAL DESCRIPTION
The Model 4045 is a programmable arbitrary waveform generator that can generate arbitrary waveforms and
predefined signal as: Sine, Triangle, Square, Pulse, etc.
FREQUENCY CHARACTERISTICS (STANDARD WAVEFORMS)
Sine - 0.01 Hz to 20 MHz
Square - 0.01 Hz to 20 MHz
Triangle , Ramp - 0.01 Hz to 2 MHz
Accuracy - 0.005 % (50 ppm)
Resolution - 6 digits or 10 mHz
ARBITRARY CHARACTERISTICS
Waveform length - 2 points to 1,000 points
Vertical resolution - 12 bits
Sampling rate - 20ns to 50s
Accuracy - 0.005 % (50 ppm)
Resolution - 4 digits
OUTPUTCHARACTERISTICS
Amplitude Range - 10mV to 10Vp-p into 50 ohms
Resolution - 3 digits (1000 counts)
Amplitude Accuracy - ± 2% ± 20mV ofthe programmed output from 1.01V- 10V
Flatness - 0.5 dB at 1MHz
- 1 dB to 20 MHz
Offset Range - ± 4.5V into 50 ohms, depending on the Amplitude setting
Offset Resolution - 10 mV with 3 digits resolution
Offset Accuracy - ± 2% ± 10mV into 50 ohms
Output Impedance - 50 ohms
Output Protection - The instrument output is protected against short circuit or accidental
voltage practically available in electronic laboratories, applied to the
main output connector
Filter - 9 pole Elliptic
WAVEFORM CHARACTERISTICS
Harmonic Distortion - DC-20 KHz -55 dBc
- 20 KHz-100 KHz -50 dBc
- 100 KHz-1 MHz -40 dBc
- 1 MHz-20 MHz -30 dBc
Spurious - DC-1MHz <-60 dBc
Square Rise/Fall Time - < 18 ns (10% to 90%) at full amplitude into 50 ohms
Variable Duty Cycle - 20% to 80% to 2 MHz for Square and 10%-90% for Triangle
Symmetry at 50% - < 1 %
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Model 4045 – Operating Manual
OPERATING MODES
Continuous - Output continuous at programmed parameters.
Triggered - Output quiescent until triggered by an internal or
Gate - Same as triggered mode, except waveform is executed for the
Burst - 2- 65,535 cycles
Trigger Source - Trigger source may be internal, external or manual.
MODULATION CHARACTERISTICS
Amplitude Modulation
- Internal: 0.1Hz-20KHz sine , square or triangle waveform
- External: 5 Vp-p for 100% modulation, 10 Kohms input impedance.
external trigger, then one waveform cycle is generated to
programmed parameters. Up to 10MHz trig rate for ARB waveforms
and 1 MHz in DDS mode.
duration ofthe gate signal. The last cycle started is completed.
Internal trigger rate 0.1Hz-1MHz (1us – 10 s)
Variable modulation from 0% to 100%.
Frequency Modulation
- Internal: 0.1Hz-20KHz sine wave, square or triangle
- External: 5 Vp-p for 100% deviation, 10 Kohms input impedance.
SWEEP CHARACTERISTICS
Sweep Shape: Linear and Logarithmic, up or down
Sweep Time: 10 ms to 100 s.
Sweep trigger internal, external, continuous or burst
INPUTS AND OUTPUTS
Trigger In - TTL compatible.
- Max. rate 10MHz.
- Minimum width 50ns.
Sync Out - TTL pulse at programmed frequency, 50 ohms
source impedance.
Modulation IN - 5 Vp-p for 100% modulation .
- 10 K input impedance.
- DC to >20 KHz minimum bandwidth.
GENERAL
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Store memory 20 full panel settings at power-off
Arbitrary memory 1,000 points in flash memory
Dimensions - 8.4 inch (213 mm) wide
- 3.5 inch (88 mm) high
- 8.3 inch (210 mm) deep
Weight - Aprox 2.5 Kg.
Power - 90V-264V
- 30 VA max
Temperature
Operating - 0ºC to +50ºC
Non-operating - -10ºC to +70ºC
Humidity - 95 % RH , 0ºC to 30ºC
EMC - According to EN55011 for radiated and
conducted emissions.
Electrical Discharge Immunity - According to EN55082
Safety Specifications - According to EN61010
CE Labeled
Specifications are subject to change without notice.
For the most current product information please visit www.bkprecision.com.
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Model 4045 – Operating Manual
Section 2
Installation
2.1 Introduction
This section contains installation information, power requirements, initial inspection and signal connections for
Model 4045 - Function Generator.
2.2 Mechanical Inspection
This instrument was carefully inspected before shipment. Upon receipt inspect the instrument for damage
that might have occurred in transit. Ifthere is damage due to shipping, file a claim with the carrier who transported
the unit. The shipping and packing material should be saved ifreshipment is required. Ifthe original container is not
to be used, then use a heavy carton box. Wrap the unit with plastic and place cardboard strips across the face for
protection. Use packing material around all sides ofthe container and seal it with tape bands. Mark the box
"FRAGILE".
2.3 Initial Inspection
After the mechanical inspection, verify the contents ofthe shipment (accessories and installed options). Ifthe contents
are incomplete, or ifthe instrument does not pass the specification acceptance tests, notify the local service center.
2.4 Instrument Mounting
The Model 4045 - Function Generator is 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. The unit can be installed in a closed rack or test station if proper air flow is assured
for removing about 15 W of power dissipation.
2.5 Power Requirements
The Model 4045 can be operated from any source of90V to 264V AC, frequency from 48Hz to 66Hz. The maximum
power consumption is 30 VA. Use a slow blow fuse UL/CSA approved of1A as indicated on the rear panel ofthe
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 cartridge.
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2.6 Grounding Requirements
For the safety ofoperating 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.
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.
2.7 Signal Connections
Use RG58U 50 Ohm or equivalent coaxial cables for all input and output signals to and from the instrument.
2.8 RS-232 Connection
The rear panel RS-232 connector is a standard DB-9 male connector configured as a DCE:
DB-9 pin Name Note
1
2
3
4
5
6
7
8
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2.9 RS-232 Configuration
The instrument use 8 data bits, 1 stop bit, no parity and baud rate of19200.
TXD
RXD
GND
RTS
CRS
-
-
Transmit Data
Receive Data
-
Signal ground
-
Request to Send
Clear to send
-
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Model 4045 – Operating Manual
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3.1 General Description
This section describes the displays, controls and connectors ofthe Model 4045 - Function Generator.
All controls for the instrument local operation are located on the front panel. The connectors are located on both
front and rear panels.
Section 3
Operating Instructions
Figure 3.1 - Model 4045 Front Panel
1. Power ON-OFF -Applies and removes AC power to the unit.
2. Display Window -Displays all instrument data and settings on a LCD.
3. FI-F4 Keys -Select the menu options that appear on the second line of
the LCD display. Menus differ depending on the selected
parameter, function or mode.
4. Function Keys -Select the output waveform, Sine, Square, Triangle or Arbitrary.
5. Rotary Knob -Used to increment/decrement numerical values or to scan
through the possible selections.
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6. Modify Keys -Used to move the cursor (when visible) to either left or right.
7. Output ON -Controls the main output signal. The output status is displayed on the LCD.
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