Instruction Manual Model 4001A and 4003A Sweep Function Generator
Contents Section Description Page No. CONTENTS 1 1 TEST INSTRUMENT SAFETY 2 2 INTRODUCTION 3 3 TECHNICAL SPECIFICATIONS 4 4 CONTROLS AND INDICATORS 7 5 OPERATING INSTRUCTIONS 10 5.1 Function Generator Output 10 5.2 Sweep Generator Output 10 5.3 Frequency Counter 11 5.4 Voltage Controlled Frequency Operation 11 5.5 Function Generator Applications Guidebook 11 6 MAINTENANCE 6.1 Preventive Maintenance 11 6.2 Service Information 12 6.3 Fuse Replacement 12 6.
Section 1 - Test Instrument Safety WARNING - Normal use of test equipment exposes you to a certain amount of danger from electrical shock because testing must sometimes be performed where exposed voltage is present. An electrical shock causing 10 milliamps of current to pass through the heart will stop most human heartbeats. A Voltage as low as 35 volts dc or ac (rms.) should be considered dangerous and hazardous since it can produce a lethal current under certain conditions.
Section 2 Introduction Models 4001A and 4003A are 4MHz Sweep Function/ Sweep Generator with the added feature of 60MHz digital counter on model 4003A. The function generator generates sinusoidal, triangular, ramp, square and pulse waveforms. The type of function is selectable through a rotary switch. The frequency is settable from 0.5Hz to 4MHz with the use of the range selector switch and the Frequency Control Knob for variable adjustments with multiplication factor of 0.04 to 4.
Section 3 Technical Specifications 3.1 3.2 3.3 3.4 FREQUENCY CHARACTERISTICS Waveforms : Sine, Square, Triangle, Ramp, ±Pulse. Range : 0.5Hz to 4MHz in 6 ranges Tuning Range : Variable Multiplication factor of 0.04 to 4.0 of selected range. Resolution : 0.001Hz (model 4003A only). Operating Modes : Normal, Sweep, VCF. Frequency Stability : Output will change less than 0.1% for 15 minutes after switching ON and it will change less than 0.2% for 24 Hours after switching ON.
3.6 3.7 3.8 3.9 SQUARE WAVE Symmetry : 50% (Positive Half) to 50% (Negative Half). <2%, 1Hz to 100kHz. Rise Time : <90nS, (20Vp-p, No Load). Frequency Range : 0.5Hz to 3.5MHz. Symmetry : Rise Time : 20% to 80%, <5%, 1Hz to 100kHz. <90nS, (20Vp-p, No Load). NEGATIVE PULSE Frequency Range Pulse Width Symmetry Rise Time : : : : 0.5Hz to 3.5MHz. 15% of time period of the Set Frequency. 80% to 20%, <5%, 1Hz to 100kHz. <90nS, (20Vp-p, No Load).
3.13 FREQUENCY COUNTER (model 4003A only). Display : 5 digit, Auto range. Display Unit : Hz/ kHz auto range. Resolution : 0.01Hz (max.). Accuracy : <0.02% ±1 digit. Temp coefficient : <10PPM / ºC. 3.14 EXTERNAL COUNTER (model 4003A only). Max. Input Voltage : <150mV rms. Input Frequency : 0.1Hz to 60MHz. Coupling : HF - for more than 100 kHz. LF - With 100 kHz filter for less than 100 kHz. Sensitivity : <30mV rms (1MHz). 3.
Section 4 Controls & Indicators 4.1 FRONT PANEL (Refer Fig. 1A & 1B) 1. POWER SWITCH Push the switch “ON” will light the LED of the digits (14) to indicate power “ON”. 2. FREQUENCY CONTROL KNOB Used to adjust the required frequency for selected range with the multiplication factor of 0.04 to 4.0. 3. SYNC OUTPUT The TTL level square signal Output synchronous with frequency of Main Output. 4. SWEEP OUTPUT Sweep signal is available regardless of position of SWEEP ON switch provided with Sweep Rate Knob. 5.
Fig. 1A Front Panel Controls (4001A) Fig.
10. FUNCTION SELECTOR SWITCH A rotary Switch for waveform selection. 11. FREQUENCY RANGE SELECTOR SWITCH A rotary Switch to select the range from 10Hz to 1MHz in 6 steps. (Refer Fig. 1B) 12. Hz LED Green LED will light when the Main Output frequency is in Hz. 13. kHz LED Red LED will light when the Main Output frequency is in kHz. 14. 5 DIGIT DISPLAY Indicates frequency of Main Output or the frequency of signal connected to External Input. 15.
Section 5 Operating Instructions Before applying power to unit, make sure that input voltage setting is correct and the ventilation holes are not blocked. Ensure that Ventilation Fan is working well. It is necessary to inspect the generated signal with an oscilloscope before connecting it to any electronic circuit. Hence use of oscilloscope is mentioned in the procedure. Turn On the instrument with Power ON switch provided on the front panel. The display shows the reading as per present settings. 5.
5.3 FREQUENCY COUNTER 1. Check the COUPLING switch position. The HF position is used for frequencies more than 100kHz. And LF position is used for the frequencies less than 100kHz. 2. The EXT COUNTER LED will be ON for when COUPLING switch is selected for counting mode. 3. Connect the signal to EXT COUNTER BNC. 4. Display will show the frequency and Hz / kHz LED’s will light depending on the frequency. 5.
! Do not obstruct the ventilation holes in the rear panel. As this will increase the internal temperature. ! Do not operate the instrument with the cover removed unless you are a qualified service technician. ! Clean and check the calibration of the instrument on a regular basis to keep the instrument looking nice and working well. ! Remove any dirt, dust and grime whenever they become noticeable on the Outside cover with a soft cloth moistened with a mild cleaning solution. 6.
Section 7 Customer Support B&K Precision offers courteous, professional technical support before and after the sale of their test instruments. The following services are typical of those available from our toll-free telephone number. 1-800-462-9832 ! Technical advice on the use of your instrument. ! Technical advice on special applications of your instrument. ! Technical advice on selecting the test instrument for a given task. ! Information on optional accessories for your instrument.
Limited One-Year Warranty B&K Precision Corp. warrants to the original purchaser that its product and the component parts thereof, will be free from defects in workmanship and materials for a period of one year from the data of purchase. B&K Precision Corp. 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 form a sales receipt. To obtain warranty coverage in the U.S.A.
Service Information Warranty Service: Please return the product in the original packaging with proof of purchase to the below address. Clearly state in writing the performance problem and return any leads, connectors and accessories that you are using with the device. Non-Warranty Service: Return the product in the original packaging to the below address. Clearly state in writing the performance problem and return any leads, connectors and accessories that you are using with the device.
This page left blank intrensionaly.
PN: 481-525-9-001 Printed in Taiwan 2004 B&K Precision Corp. 22820 Savi Ranch Parkway Yorba Linda, CA 92887 USA TEL: 714-921-9095 FAX: 714-921-6422 www.bkprecision.
