Fluke Portable Generator PN 2430621 User Manual

®
80/81  
Function Generators  
Getting Started  
PN 2430621  
January 2005  
© 2005 Fluke Corporation, All rights reserved. Printed in USA  
All product names are trademarks of their respective companies.  
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Function Generators  
Introduction  
Introduction  
This manual provides a brief description and safety information for both t h e Model 80 -  
Function Generator and Model 81 - Pulse/Function Generator. The Instruction Manual  
(provided on the CD-Rom) provides complete operating and maintenance  
instructions.  
Description  
Model 80 is an extremely high-performance programmable function generator. It provides a variety  
of signal waveforms, to be used as test stimuli for different electronic devices. Microprocessor  
based, Model 80 is easy to set up for manual use. It is also simple to program in GPIB system  
environment.  
The instrument is built in an all-round metal case for improved RFI and EMI shielding. It is  
housed in a size to fit half-rack enclosures. Regardless of its small size, Model 80 offers many  
features and functions, such as enhanced accuracy, eight different linear and logarithmic sweep  
modes, automatic phase lock loop, pulse and ramp waveforms with transition time control  
(Model 81 only), counted burst, internal trigger generator, full implementation of the new  
IEEE-488.2 standard, and more. But, most of all, Model 80 guarantees high quality waveforms  
through- out the specified frequency range, amplitude span, and operating temperature.  
Model 80 generates waveforms within a frequency range from 10mHz to 50MHz and an  
amplitude span from 10mV to 32Vp-p. Such broad coverage warrants a variety of complex  
applications. Rapid, repeatable testing every time is assured by a non-volatile mem- ory. Up to  
30 front panel set-ups can be stored and recalled for later use; ensuring exact duplication of  
previous tests. Its performance, programmability and economy make it equally at home in every  
laboratory.  
For improved output accuracy, Model 80 employs a built-in counter. This counter is  
incorporated in an internal loop which constantly monitors the output frequency. Even the  
slightest deviation from the programmed frequency is detected and corrected by the  
microprocessor circuit.  
Model 80 features self-calibration and self-diag- nostic functions that can be operated anytime from  
the front panel or GPIB command. The self-calibration function compares the output signal  
parameters to built-in internal references and stores correcting fac- tors in special tables. If  
calibration routine fails or can not be completed due to electrical faults, the generator produces a  
failure list that can be evaluated either from the front panel or through GPIB status reporting  
command.  
Besides its normal continuous mode, Model 80 offers a variety of interrupted and controlled  
modes. Output waveform may be gated, triggered, or may generate a counted burst of output  
waveforms. A built-in trigger generator, having a programmable period, can replace an external  
trigger stimulant. The MANUAL trigger is just an additional convenience for front panel  
operation. The generator may also be placed in a number of externally controlled modes, such as  
VCO, FM, AM, and pulse width modulation (PWM - Model 81 only).  
Model 80 may be used as an independent sweep generator with its output swept over an  
exceptionally wide range of 10 decades. The instrument offers a choice of eight sweep modes,  
both linear and loga- rithmic to cover a large number of applications. A MARKER output  
provides an oscilloscope Z-axis modulation to intensify segments of sweep trace.  
Alternately, Model 80 may also be used as a stand-alone phase lock generator. The instrument  
locks automatically to an external signal and equates its output frequency and phase to that  
provided by the external reference. The operator may then gen- erate a phase offset between the  
reference signal and the generator’s output. Phase offset is adjusted within a range of ±180°.  
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80/81  
Getting Started  
Model 80 provides an output level from 20mV to 32Vp-p into open circuit or 10mV to 16Vp-  
p into 50 . DC offset plus amplitude are independently variable within two window levels:  
±16V and ±1.6V (into open circuit). This special characteristics warrants production of extremely  
small signals at an elevated DC environment.  
Model 81 is a pulse/function generator and is also described in this manual. This instrument is  
identical in its basic functions to the Model 80. In addition, this instrument offers Pulse and  
Ramp waveforms. Pulse width and ramp width are adjustable within a range of 10.0ns to 999ms.  
Model 81 provides control over the transition times for the leading and trailing edges; each can  
be adjusted independently within a common range. Pulse complement and inverted ramp functions  
are also available. This manual identifies those features and specifications that only apply to Model  
81.  
Instrument and Manual Identification  
The serial number of the instrument is located on the rear panel of the instrument. The two  
most significant digits identify instrument modifications. If this prefix differs from that listed on  
the title page of this manual, there are differences between this manual and your instrument.  
Technical corrections to this manual (if any) are listed in the back of this manual on an enclosed  
MANUAL CHANGES sheet.  
Options  
Model 80 offers a rack mounting option; designated as OPT 001. Opt 001 is field installable  
or may be ordered with new instruments from the factory.  
Safety Considerations  
Model 80 has been manufactured according to in- ternational safety standards. The instrument  
meets EN 61010-1 and UL 1244 standards for safety of commercial electronic measuring and  
test equipment for instruments with an exposed metal chassis that is directly connected to earth via  
the power supply cable. Before the instrument is switched on, make sure that protective earth  
terminal is connected to a protective earth via the power cord. Do not remove instrument covers  
when operating or when power cord is connected to mains.  
Any adjustment, maintenance and repair of the opened instrument under voltage should be  
avoided as much as possible, but when inevitable, should be carried out only by a skilled person  
who is aware of the hazard involved.  
Safety Precautions  
Protect yourself. Follow these precautions:  
Don’t bypass the power cord’s ground lead with two-  
wire extension cords or plug adapters.  
Don’t disconnect the green and yellow safety-earth-  
ground wire that connects the ground lug of the  
power receptacle to the chassis ground terminal.  
Don’t plug in the power cord until directed to by the  
installation instructions.  
Don’t repair the instrument unless you are qualified  
electronics technician and know how to work with  
hazardous voltages.  
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Function Generators  
Accessories Supplied  
Pay attention to the WARNING statements. They point  
out situations that can cause injury or death.  
Pay attention to the CAUTION statements. They point out  
situations that can cause equipment damage  
Accessories Supplied  
Model 80 is supplied with ac power cord and with an instruction manual. Extra manual is available  
on request.  
Specifications  
Instrument specifications are given in Chapter 1 of the Instruction Manual. These specifications  
are the performance standards or limits against which the instrument is tested.  
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80/81  
Getting Started  
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