Hameg hm8021 电路图.pdf

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1、Service-Manual U n i v e r s a l C o u n t e r H M 8 0 2 1 - 4 RadioFans.CN 收音机爱 好者资料库 2 Subject to change without notice General information regarding the CE marking HAMEG instruments fulfi ll the regulations of the EMC directive. The conformity test made by HAMEG is based on the actual generic- an

2、d product standards. In cases where different limit values are applicable, HAMEG applies the severer standard. For emission the limits for residential, commercial and light industry are applied. Regarding the immunity (susceptibility) the limits for industrial environment have been used. The measuri

3、ng- and data lines of the instrument have much infl uence on emmission and immunity and therefore on meeting the acceptance limits. For different applications the lines and/or cables used may be different. For measurement operation the following hints and conditions regarding emission and immunity s

4、hould be observed: 1. Data cables For the connection between instruments resp. their interfaces and external devices, (computer, printer etc.) suffi ciently screened cables must be used. Without a special instruction in the manual for a reduced cable length, the maximum cable length of a dataline mu

5、st be less than 3 meters and not be used outside buildings. If an interface has several connectors only one connector must have a connection to a cable. Basically interconnections must have a double screening. For IEEE-bus purposes the double screened cables HZ72S and HZ72L from HAMEG are suitable.

6、2. Signal cables Basically test leads for signal interconnection between test point and instrument should be as short as possible. Without instruction in the manual for a shorter length, signal lines must be less than 3 meters and not be used outside buildings. Signal lines must screened (coaxial ca

7、ble - RG58/U). A proper ground connection is required. In combination with signal generators double screened cables (RG223/U, RG214/U) must be used. 3. Infl uence on measuring instruments. Under the presence of strong high frequency electric or magnetic fi elds, even with careful setup of the measur

8、ing equipment an infl uence of such signals is unavoidable. This will not cause damage or put the instrument out of operation. Small deviations of the measuring value (reading) exceeding the instruments specifi cations may result from such conditions in individual cases. HAMEG Instruments GmbH Die H

9、AMEG Instruments GmbH bescheinigt die Konformitt fr das Produkt The HAMEG Instruments GmbH herewith declares conformity of the product HAMEG Instruments GmbH dclare la conformite du produit Bezeichnung / Product name / Designation: Universal Zhler / Universal Counter / Compteur Universel Typ / Type

10、/ Type: HM8021-4 mit / with / avec: HM8001-2 Optionen / Options / Options: mit den folgenden Bestimmungen / with applicable regulations / avec les directives suivantes EMV Richtlinie 89/336/EWG ergnzt durch 91/263/EWG, 92/31/EWG EMC Directive 89/336/EEC amended by 91/263/EWG, 92/31/EEC Directive EMC

11、 89/336/CEE amende par 91/263/EWG, 92/31/CEE Niederspannungsrichtlinie 73/23/EWG ergnzt durch 93/68/EWG Low-Voltage Equipment Directive 73/23/EEC amended by 93/68/EEC Directive des equipements basse tension 73/23/CEE amende par 93/68/CEE Angewendete harmonisierte Normen / Harmonized standards applie

12、d / Normes harmonises utilises Sicherheit / Safety / Scurit EN 61010-1:2001 (IEC 61010-1:2001) berspannungskategorie / Overvoltage category / Catgorie de surtension: II Verschmutzungsgrad / Degree of pollution / Degr de pollution: 2 Elektromagnetische Vertrglichkeit / Electromagnetic compatibility /

13、 Compatibilit lectromagntique Hersteller HAMEG Instruments GmbH KONFORMITTSERKLRUNG Manufacturer Industriestrae 6 DECLARATION OF CONFORMITY Fabricant D-63533 Mainhausen DECLARATION DE CONFORMITE EN 61326-1/A1 Straussendung / Radiation / Emission: Tabelle / table / tableau 4; Klasse / Class / Classe

14、B. Strfestigkeit / Immunity / Imunitee: Tabelle / table / tableau A1. EN 61000-3-2/A14 Oberschwingungsstrme / Harmonic current emissions / missions de courant harmonique: Klasse / Class / Classe D. EN 61000-3-3 Spannungsschwankungen u. Flicker / Voltage fl uctuations and fl icker / Fluctuations de t

15、ension et du fl icker. Datum /Date /Date 22.07.2004 Unterschrift / Signature /Signatur G. Hbenett Produktmanager General information regarding the CE marking RadioFans.CN 收音机爱 好者资料库 3 Subject to change without notice Content Declaration of Conformity 2 General information regarding the CE-marking 2

16、4 Digit Programmable Multimeter HM8021-4 4 Specifi cations 5 Control elements 6 Adjustment 7 Circuit and layout diagrams 8 RadioFans.CN 收音机爱 好者资料库 4 Subject to change without notice HM8021-4 1 . 6 G H z U n i v e r s a l C o u n t e r H M 8 0 2 1 - 4 Frequency range 0Hz to 1.6GHz 10MHz time base wit

17、h 0.5ppm stability (TCXO) Input A: Input impedance 1M, maximum sensitivity 20mVrms Input C: Input impedance 50, maximum sensitivity 30mVrms Time interval resolution up to 10ps Offset mode over the entire measurement range Gate input (in combination with HO801) Mainframe HM8001-2 required for operati

18、on Option HO801 Mainframe HM8001-2 Option HO85, a high-stability oscillator with a stability of 5x10 -9 per day 5 Subject to change without notice Specifications 1.6 GHz Universal Counter HM8021-4 Valid at 23 C after a 30 minute warm-up period Measurement functions Frequency A/C, Period A; Totalize

19、A; Pulse width : L / L :(averaged); Totalize A during ext. gate Input characteristics (Input A) Frequency range: 0 150MHz:DC-coupled 10Hz 150MHz:AC-coupled Sensitivity: (normal triggering) DC 80MHz20mVrms(sine wave) 80mV (pulse) 80MHz 150MHz60mVrms(sine wave) 20Hz 80MHz (auto trig.) 50mVrms(sine wav

20、e) Minimum pulse width:5ns Input noise:100V (typ.) Coupling:AC or DC (switchable) Input impedance:1M II 40pF Attenuator:x 1, x 20 (switchable) Max. input voltage: 0 to 440Hz:400V (DC + ACpeak) 1MHz:decreasing to 8Vrms Input characteristics (Input C) Frequency range:100MHz 1.6GHz Sensitivity: to 1.3

21、GHz:30mV (typ. 20mV) to 1.6 GHz: 100mV (typ. 80mV) Input impedance:50 nominal Coupling:AC Max. input voltage: 5V (DC + ACpeak) Input characteristics (external gate) Input impedance:4.7k Max. input voltage:30V High/low level: 2V/ 0.5V Min. pulse duration: 50ns Min. effective gate time:150s Frequency

22、measurement (Input A) LSD:(2.5x10-7s x freq.)/measurement time Resolution:1 or 2 LSD Period duration measurement Range:10000 sec to 66.6ns LSD:(2.5 x 10-7s x period)/measurement time Resolution:1 or 2 LSD Totalize (manual / external gated) Range:DC to 20MHz Min. pulse duration:25ns LSD:1 count Resol

23、ution:LSD Ext. gate error: in manual mode only 100ns Time interval (averaged) LSD:100ns to 10ps Resolution:1 or 2 LSD Offset Range:covers the entire measurement range Gate time (Gate time cannot be less than 1 period.) Range:100ms 10s in 3 steps External gate time:min. 150 s Timebase Frequency:10MHz

24、 clock 10MHz crystal Accuracy (between 10C and 40C): 5 x 10-7 Aging:3ppm/15 years General information Display: 8-digit 7-segment LED display with 7.65mm digit height, sign and exponent Power consumption: approx. 7 Watt Operating temperature:+10C to +40C Max. relative humidity:10% 90% (without conden

25、sation), 5% 95% RH Dimensions (W x H x D): 135 x 68 x 228mm Weight:approx. 0.6kg Accessories supplied: Operators Manual Optional accessories: HZ33/HZ34 BNC Test Cable, HZ24 Attenuators, HZ20 BNC banana adapter, HO85 OCXO, HZ10 Silicone test leads HM8021-4E/140705/ce Subject to alterations HAMEG Inst

26、ruments GmbH Registered Trademark DQS-certified in accordance with DIN EN ISO 9001:2000, Reg.-No.: DE-071040 QM HAMEG Instruments GmbH Industriestr. 6 D-63533 Mainhausen Tel +49(0)6182 8000 Fax +49(0)6182 800100 A Rohde LED) The gate indicator is lit when the gate is open for measure- ments. This ti

27、me equals the preselected gate time and a synchronization time. The gate cannot be open for a time smaller than 1 period of a signal. GATE TIME (Gate time selector; pushbutton + LEDs) The gate time is selectable in steps of 0.1s, 1s, 10s. EXT. (LED) In the gate external mode, the counter will expect

28、 an exter- nal control signal, and will not measure until such a signal is supplied. DISP. HOLD (pushbutton + LED) Depressing the DISP. HOLD pushbutton sets the display time to infi nity and freezes the last measurement result. A new measurement can be initiated using the reset pushbut- ton. Measuri

29、ng will restart when Display Hold is switched off. Display Hold starts and stops counting in the TOTALIZE function mode. Function indicators (LEDs) FUNCTION (pushbuttons) The ? and ? pushbuttons select the desired function. The appropriate LED is lit when a function is selected. The def- ault value

30、when switching power on is FA (Frequency A). OFFSET (pushbutton + LED) The displayed value becomes the reference value. (Not available with the TOTALIZE function). RESET (pushbutton + LED) Stops a measurement and clears the display in normal measurement mode. When depressing the button in display ho

31、ld-mode the counter performs a single measurement (one shot) on release of the button. When the offset-mode is activated, depressing RESET shows the reference value (which is the actual offset). Reset is active as long as the button is de pressed. INPUT C (BNC-connector) Frequency range: 100 MHz to

32、1.6 GHz Input impedance: 50 Attention! Do not apply more than 5 V (DC+ACpeak) to this input terminal. DC (pushbutton) Selection of AC or DC coupling of the signal input A. The bandwidth for low frequencies is as low as 10 Hz (3 dB) when the input is AC coupled. Input C has a fi xed AC coupling. DC c

33、oupling = button depressed 1:20 (pushbutton) Selection of input signal attenuation. Pressing this button attenuates the input signal by 26 dB before it is applied to the input amplifi er. AUTO (pushbutton) With Auto Trigger active the counter triggers in the middle of the input signal. Auto Trigger

34、always uses AC-coupling. AC = pushbutton depressed. INPUT A (BNC connector) Signal input with a sensitivity of 20 mV up to 80 MHz and 60 mV up to 150 MHz. The input is protected against over- voltage up to 400 V (DC+ACpeak). Input impedance: 1 M II 40 pF. TRIGGER (adjusting knob) Continuously adjust

35、ment of trigger level. TRIGGER (LED) Trigger indicator. The LED fl ashes when triggering is cor- rect. The LED lights when the trigger level is above the in- put signal level, it is not activated when the trigger level is below the input signal level. 8 digit display (7 segment LEDs, 7.65mm high) fo

36、r the measuring result (8 digit max. + exponent) Hz (LED): Indicates the measurement of a frequency s (LED): Indicates the measurement of time Control elemtents 7 Subject to change without notice Push the DISP. HOLD button Check frozen display Push the RESET button Check display = 0 Push the DISP. H

37、OLD button Check moving display 4) Sensitivity Select FA, AUTO mode (Button is depressed) Check display with 50 mV at 150 MHz Select FA, normal mode (Button is released) Check display with 20 mV at 80 MHz Check display with 60 mV at 150 MHz Connect the signal generator with INPUT C (no load) Check d

38、isplay with 50 mV at 100 MHz Check display with 50 mV at 1000 MHz Disconnect BNC cable Check display for no self-oscillation 5) Input circuits Connect a function generator (1 kHz, 4 Vpp, sine wave) with INPUT A . No attenuation (button is released) Check TRIGGER for large triggering area Select 1:20

39、 attenuator, DC (buttons and are de- pressed) Check TRIGGER for small triggering area Select DC, no attenuation (button is depressed, is released) Check the triggering for all position of TRIGGER potentio- meter (+/ slope) Adjustment Adjustment 1) Threshold adjustment Select FA, AUTO mode (Button is

40、 depressed) Sine wave signal 30 mVrms 1 kHz at INPUT A Adjust P1 in order to have square wave at U5, pin 11 out- put Check triggering at 100 Hz and 10 Hz 2) Auto-adjustment Sine signal 10 MHz, 20 mV (GPS) at INPUT A Push and hold RESET and GATE TIME (RESET button fi rst) until calibration mode is ac

41、tivated. Enter the calibration date: use the GATE TIME button to change the date and the ? and ? pushbuttons to change the position of the cursor. Turn the instrument off and on for auto-test. 3) Functions verifi cations INPUT A : test from 10 MHz to 110 MHz with 10 MHz steps GATE TIME 0.1 s 1 s 10

42、s + OF led EXT: test with external signal (the GATE TIME LED blinks). INPUT A : 100 MHz signal Select 0.1 s GATE TIME Push the DISP. HOLD button Check frozen display = 100.0000 6 Push the RESET button Check display = 0.00 Push the OFFSET button Check display = 000.000 6 Push the RESET button Check d

43、isplay = 100.000 Connect 150 MHz, 50 mV at INPUT A Push the DISP. HOLD button Check display = 050.0000 6 Deselect OFFSET Check display = 150.0000 6 Select PA mode Check display = 6.6666666 -9 Connect pulse generator (HM8035: 20 MHz, width 200 ns) Select TI Check display = 200 -9 Invert HM8035 pulse

44、polarity Select TI Check display = 200 -9 Connect signal generator at INPUT A Select TOT function Check moving display 8 Subject to change without notice Circuit and layout diagrams 9 Subject to change without notice Circuit and layout diagrams 10 Subject to change without notice Circuit and layout

45、diagrams 11 Subject to change without notice Circuit and layout diagrams 12 Subject to change without notice Circuit and layout diagrams 13 Subject to change without notice Circuit and layout diagrams 14 Subject to change without notice Circuit and layout diagrams 15 Subject to change without notice

46、 Circuit and layout diagrams 16 Subject to change without notice Circuit and layout diagrams 17 Subject to change without notice Circuit and layout diagrams 18 Subject to change without notice Circuit and layout diagrams 19 Subject to change without notice Circuit and layout diagrams w w w . h a m e

47、 g . d e authorized dealer Oscilloscopes Spectrum Analyzer Power Supplies Modular System 8000 Series Programmable Instruments 8100 Series Subject to change without notice 4S-8021-04E0 / 02-11-2005-gw HAMEG Instruments GmbH HAMEG Instruments GmbH Industriestrae 6 A Rohde & Schwarz Company D-63533 Mainhausen registered trademark Tel +49 (0) 61 82 800-0 DQS-Certifi cation: DIN EN ISO 9001:2000 Fax +49 (0) 61 82 800-100 Reg.-Nr.: 071040 QM saleshameg.de 4S-8021-04E0