F74 电路图.pdf

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1、- . - ,l JL= -10; 30 )Z-r Gc Instruction MANUAL Model No. _ Serial No. _ _ SERIES7D FUNCTION GENERATOR MODELS F74/F77 ,-) EC INTERSTATE ELECTRONICS CORPORATION A SUbSldl.Y Of A-T-O Inc. -.;.-.- Department 7000 707 EAST VERMONT AVENUE, ANAHEIM. CALIFORNIA 92803 (714) 772-2811 PART NO. PO0338099-4 (F7

2、4-F77) CD COPYRIGHT 1975 PRINTED 1975 DIGITAL Y REMASTERED OUT OF PRINT TEST EQUIPMENT MANUAL SCANS By ArtekM anuals (fonnerly known as ArtekMedia and A) 6102 LIBERTY AVE. TEMPLE TERRACE, FL 33617 High resolution scans of obsolete technical manuals REMOVAL OF THIS DISCLAIMER IS IN VIOLATION ARTEKMAN

3、UALS DERIVATIVE COPYRIGHTS. DUPLICATION OR MODIFCATION OF THIS DIGITAL DOCUMENT WITHOUT PRIOR CONSENT IS NOT PERMITTED If your looking for a quality scanned technical manual in PDF format please visit our WEB site at www.ArtekM or drop us an email at ManualsArtekM If you dont see the manual you need

4、 on the list drop us a line anyway we may still be able to point you to other sources. If you have an existing manual you would like scanned please write for details. This can often be done very reasonably in consideration for adding your manual to our library. Typically the scans in our manuals are

5、 done as follows; 1) Typed text pages are typically scanned in black and white at 300 dpi. 2) Photo pages are typically scanned in gray scale mode at 450 dpi 3) Schematic diagram pages are typically scanned in black and white at 600 dpi or Gray-scale 450dpi depending on the characteristics. 4) All m

6、anuals are text searchable and all manuals are fully bookmarked All data is guaranteed for life (yours or mine . which ever is shorter). If for ANY REASON your file becomes corrupted, deleted or lost, ArtekManuals will replace the file for the price of shipping, or free via FTP download. Thanks DC H

7、enderson Founder and CEO Artek Media ArtekManuals Outsource-Options THIS PAGE INTENTIONALLY BLANK. INSERTED HERE FOR DOCUMENT PAGE NUMBER CONTINUITY SCANS BY ARTEK-MANUALS ArtekManuals 2015 ii WARRANTY Interstate Electronics Corporation warrants its function generators against defects in material an

8、d workmanship for a period of one year from date of shipment. We will repair or replace defective products during the warranty period provided that such defect developed under normal and proper use and that transportation costs are paid by the purchaser. We are not liable for consequential damages n

9、or is any other warranty expressed or implied. RECEIVING AND INSPECTION Immediately upon receipt of the instrument, inspect the exterior of the shipping container for physical damage and notify carrier if such damage is visible. After carefully removing all packing materials, inspect the instrument

10、to ensure that it is free of mars and blemishes. CLAIM FOR DAMAGED SHIPMENT If damage has occurred, a claim should be made with the carrier. The claim agent should receive a complete report of damage and a copy of the report should be sent to IEC. After receiving this report, IEC will advise you of

11、the disposition of the instrument and arrange for its repair or replacement. POWER This instrument operates from a-c power only, either 115 or 230 vac, 50 to 400 Hz. A slide switch at the rear of the equipment readily selects the desired power line voltage . . : CAUTION : I I . Operation at the wron

12、g power line voltage switch setting may damage the instrument. PERFORMANCE TESTS Electrical performance tests should be concluded as soon as possible. See paragraph 4-2, Section 4. ) ArtekManuals 2015 Paragraph 1-1 1-2 1-3 1-4 1-5 1-6 1-7 2-1 2-2 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 3-9 3-10 3-11 CONTENT

13、S Section 1. SPECIFICATIONS AND INSTALLATION Introduction. . . . . . . . Description . . . . . . . . Performance Characteristics Receiving and Inspection Installation . . . . . Power Requirements . Repackaging . . . . Section 2. OPERATING INSTRUCTIONS Introduction. . . . Operating Controls. Introduc

14、tion. Power Supply Main Loop . Section 3. CIRCUIT DESCRIPTION Follow Amplifier /Low-Frequency Integrator Start/Stop . . . . . . . . . . Sine Shaper. . . . . . . . . . Logic/Rectangular Wave Shaper Inverter /Offset/Output Amplifier Sweep Generator . . . Log Sweep Converter Pulse-Width Generator. 1-1

15、1-1 1-1 1-5 1-5 1-5 1-6 2-1 2-1 3-1 3-1 3-1 3-3 3-4 3-4 3-4 3-4 3-5 3-6 3-6 iii ArtekManuals 2015 Paragraph v 4-1 4-2 5-1 5-2 6-1 6-2 Section 4. CALIBRATION AND PERFORMANCE Introduction Test Points and Adjustments Introduction Timing Diagrams Introduction. . . . Parts List Tables . Section 5. MAINTE

16、NANCE Section 6. PARTS LIST 4-1 4-1 5-1 5-1 6-1 6-1 ArtekManuals 2015 Figure 2-1 2-2 ILLUSTRATIONS Section 2. OPERATING INSTRUCTIONS Controls and Indicators . . . . Output/Sync Out Phase Relationships Section 3. CIRCUIT DESCRIPTION 3-1 20MHz Sweep Function Generator (F74-F77 Models) -Simplified 4-1

17、4-2 4-3 5-1 5-2 5-3 5-4 5-5 5-6 5-7 5-8 Block Diagram . . . . . . . . . . . . . . . Section 4. CALIBRATION AND PERFORMANCE Adjustment Location Diagram (F44/F77 Models, A-1 Card) Test Point Location Diagram (F44/F77 Models, A-1 Card) Test Point Location Diagram (Solder Side) . Section 5. MAINTENANCE

18、A2 Board (Series 70 Models) -Disassembly Diagram Attenuator Switch Assembly . . . . . . . . . . Sweep Time Switch (F44/F77 Models) . . . . . Waveform Switch (F44/F77 Models) -Wiring Diagram Front Panel Components (F74/F77 Models) -Location Diagram Rear Panel Components (F74/F77 Models) -Location Dia

19、gram. Timing Diagram -Triggered and Gated Modes . . . . . Timing Diagram -Sweep Trigger and Sweep nonsymmetrical sine, square and triangle waveforms to 1 MHz. Ten decade ranges, up to 1000:1 continuous vernier adjustment within any X2 dial range, 500: 1 on any Xl dial range. Independent, free-runnin

20、g, sweep-ramp generator provides sweep times from 1000 seconds to 10 J.lS (exclusive of re- trace) in seven decade ranges with 100:1 continuous vernier adjustment within any range. Dial Accuracy (With dial scale switch at SYMMETRICAL Xl or X2): 0.00002 Hz to 20 Hz: 2% of full scale 1 % of setting 20

21、 Hz to 200 kHz: 1% of full scale 1 % of setting 200 kHz to 2 MHz: 2% of full scale 1 % of setting 2 MHz to 20 MHz: 3% of full scale 2% of setting Time Symmetry (with dial scale switch in Xl or X2): 99%,. to 20 Hz; 99. 5%, 20 Hz to 100 kHz; 98%, 100 kHz to 2 MHz AMPLITUDE Output Levels -Main Amplifie

22、r: Maxi- mum output of sine, triangle, square and pulse waveforms is 30V p-p (bipolar) into open circuit or high-impedance loads (e. g., MOS), 15V p-p into 50-ohm load. Source impedance is 50 ohms. Minimum output is 1. 5 mV p-p. Sweep waveforms exited through main amplifier are uni- polar. Combined

23、signal plus offset must lie in region between 15V open circuit or7. 5V into 50-ohm load. Short-circuit- proof. 200 milliamps maximum current output on any waveform. Attenuator: Precision aUenuator provides three 20-dB (10:1 in voltage) steps plus continuously variable 0-20 dB vernier; permits 80-dB

24、output adjustment to 1. 5 mV p-p minimum. WAVEFORM CHARACTERISTICS Frequency Response (Sine, triangle, square wave and pulse): Better than 0.1 dB to 100 kHz; 0.25 dB, 100 kHz to 2 MHz; 2dB, 2 MHz to 20 MHz. Square wave and Pulse (50-ohm termin- ation): Standard pulse width adjustable ArtekManuals 20

25、15 over range of 30 nanoseconds to 10 mil- liseconds, independent of repetition rate. Rise and fall times 15 nanoseconds; 5% total aberrations. Amplitude Differential: 5% p-p varia- tion between symmetrical triangle, sine, pulse and square waveforms to 2 MHz. Sine Distortion: 0.5% to 100 kHz; 99% to

26、 100 kHz; 95% 100 kHz to 2 MHz. Offset: Selection of zero offset, posi- tive or negative fixed offset (half amp- litude unipolar waveform peaks tangent to 0 volts), or variable offset (15V range into open circuit). NOTE: sig- nal plus offset must not exceed 15V level. Offset is independent of contin

27、- uously variable level setting, but not of step attenuator. Stability: Amplitude, frequency and off- set (after 30-min warmup) better than 0.05% for 10 minutes; 0.25% for 24 hours. VCF External dc or ac voltage control of output frequency; 0 to + 5V maximum varies frequency upward 1000:1 from minim

28、um dial setting. VCF bandwidth is 100 kHz, limited to O 3V / /.1Sec input slew rate; input impedance is 7. 5K ohms. Linearity is within 0.2% on all ranges except X1M. SECTION 1 AMPLIFIER EXTERNAL INPUT F77 Model only) (rear panel, External introduced (inverting) signals to the via rear and/or offset

29、 may be main output amplifie r panel AMPL IN BNC connector when waveform switch is at dc position. Input impedance is 50 ohms; ampli- fier internal gain is approximately 6. Offset, inverter and attenuator controls fully active for these inputs. TRIG-SYNC An external waveform of IV p-p lying be- twee

30、n 5V will activate an internal squaring circuit. This circuit initiates triggered or gated waveforms or may be used to synchronize the internal (continuous mode) generator to fundamental frequency (or harmonics) of the external signal frequency. Input impedance is 10K ohms shunted by 50 pF. Both tri

31、gger level and trigger slope controls provided for maxi- mum versatility. MODES Continuous Generator produces a con- tinuous wavetrain. May be synchronized to an external periodic waveform applied to TRIG-SYNC IN when the input fre- quency is within -0+1 % of the internal set frequency. Triggered: M

32、anual or external trigger pulse initiates one complete waveform cycle. (See TRIG-SYNC specifications for input characteristics). Cycle start- stop point is continuously variable 900 using PHASE control. Start-stop aberrations are less than 5% up to 1 MHz; usable to 5 MHz. 1-3 ArtekManuals 2015 SECTI

33、ON 1 1-4 Gated: Manual or external trigger signal starts wavetrain which continues until trigger is removed. (See TRIG-SYNC specifications for input characteristics). The last cycle of the wavetrain is always completed before the generator stops. Start-stop aberrations less than 5% up to 1 MHz; usab

34、le to 5 MHz. Cycle start-stop point is continuously variable 900 using PHASE control. Sweep: Sweeps the main generator fre- quency between limits established by main dial cursor and concentric sweep limit cursor. Sweep limit accuracy better than 5% of full scale. Switch se- lectable sweep up or swee

35、p down. Max- imum swept frequency change is 1000: 1 with dial scale switch at X2 and 500: 1 with dial scale at Xl. Internal main generator slew-rate limitations (typ- ically O. 3V /J-lSec) decreases maximum peak-to-peak frequency change to ap- proximately 6 major dial divisions in a 10-tJSec (linear

36、) sweep time. Linear sweep is provided in both F74 and F77 Models. Log sweep (F77 Model only) provides logarithmically shaped ramp for full three-decade frequency range. Selectable constant amplitude, linear sweep ramp, or frequency analog outputs are provided for driving display .x-axis. A rectangu

37、lar waveform sweep sync output (F77 Model only) is available for pen lift function on chart recorders. Continuous -Sweeps the main generator repetitively at the rate established by the sweep generator controls. Retrace is not blanked. Trigger Sweep - Main generator starts from set baseline when trig

38、gered and produces a swept frequency output for one complete sweep cycle; returns to set baseline. Sweep and Hold - Main generator oper- ates at start cursor frequency until triggered, then sweeps to other preset cursor frequency and holds until manu- ally reset. Can be used to measure swept frequen

39、cy excursions. Burst -Integral number of main gen- erator waveform cycles (as estab- lished by setting trigger level control) are repetitively triggered by sweep generator at a rate established by sweep time controls. ISOLATION Rear panel slide switch isolates all BNC connectors and circuit grounds

40、from case and power line ground. (Nominal. 01 f.lF capaci- tance exists between circuit ground and power ground). POWER Switch selects 90-110V; 104-126V; 180-220V; or 208-252V ac; 50-400 Hz; 50W maximum. OPERATING TEMPERATURE OOto 500C DIMENSIONS Benchtop models: 11-1/4 wide x 15 deep x 6 high (29 x

41、 38 x 15.5 cm) Rack models: Fit in 5 -1/4 rack space; 12-3/4 (32.5 cm) behind panel, 2-1/4 (6 cm) in front of panel. ArtekManuals 2015 WEIGHT 16. 5 lb (7. 5 kg) net; 20 lb (9 kg) shipping NOTE: Except where indicated, perform- ance characteristics apply for ambient tem- perature of 250C 5 lOY p-p ou

42、tput terminated in 50-ohm resistive load; OY dc offset; fre- quency dial set between. 1 full scale and full scale;all external inputs removed; inverting switch off; and dial scale switch set at sym- metrical. For other temperatures between o 0 o and 50 C, derate performance character- istics by a fa

43、ctor of 2. 1-4. RJ:CEIVING AND INSPECTION Immediately upon receipt of the instrument, inspect the exterior of the shipping container for physical damage and notify the carrier if damage is apparent. After carefully remov- ing all packing materials, inspect the instru- ment for dents and scratches. C

44、heck instrument to confirm that electrical performance meets or exceeds the specifica- tions. Section 4 contains a suggested receiv- ing performance test procedure. (Table 4-2). To remove the function generator from its case, remove the two No. 6-32 retaining screws mounted in the bottom of the case

45、 at the rear of the unit and slide the electronics forward. 1-5. INSTALLATION This instrument may be used on the work- bench or may be rigidly mounted in an RETMA rack structure by means of an optional rack- mounting kit. The instrument includes a handle that facilitates carrying and a bottom- mount

46、ed tilt mechanism for optimum panel SECTION 1 viewing angle. The tilt mechanism, handle, and feet must be removed for rack mounting. The function generator is an all solid -state instrument; it therefore requires no special cooling facilities when operated within the specified temperature limits. Ca

47、re must be taken, however, to ensure that a 2 -inch min- imum clearance is provided at the rear of the instrument for proper convection cooling of the heatsink. 1-6. POWER REQUIREMENTS The function generator operates from ac power only, 50 to 400 Hz. A slide switch is provided at the rear of the equ

48、ipment for select- ing the desired power line voltage. Fuses for the instrument are contained in a separate envelope. Case must be taken to ensure that the proper fuse for the line voltage selected is used. . . , ! CAUTION ! . Operation at the wrong power line voltage switch setting may damage the i

49、nstrument. IEC function generators are supplied with a slide switch for selection of normal or low line voltage operation. A chart which indicates the proper switch setting is imprinted on the back of the instrument. A three-conductor cord is supplied with the equipment to permit referencing the chassis a