FLUKE PM6666__omeng0000 电路图.pdf

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1、CONTENTS SAFETY.4 Introduction.4 PRODUCT PRESENTATION .5 INSTALLATION .7 Unpacking.7 Voltage-range selection .7 Grounding.8 Connecting external reference.8 Installing options.8 Calibrating the MTCXO.8 OPERATING INSTRUCTIONS .10 Using the Timer/counter.10 Battery unit .22 Error codes .22 GPIB-INTERFA

2、CE OPERATION.23 Introduction.23 What can I do using the bus? .23 Connecting the controller.24 Giving the counter an address.24 Checking the communication.24 Two ways of programming .25 Syntax.25 Selecting output separator.26 How to select function.26 Selecting Measuring-Time. 27 Selecting Input sett

3、ings . 27 Totalize Start/Stop . 27 Free-Run/Triggered. 28 Service Request. 28 Status byte. 29 Output mode. 29 Bus Learn. 31 Programming data out. 31 What happens when I switch to local? . 32 Summary of bus commands. 32 Programming Examples . 33 SPECIFICATIONS. 37 Measuring functions . 37 Input speci

4、fications. 38 Auxiliary functions. 39 Definitions. 39 General information. 40 Optional accessories. 41 Ordering information . 42 APPENDIX . 43 Checking the sensitivity of counters . 44 INDEX. 45 4822 872 20017 7/October 1996 CONTENTSPage: 1 PM 6666 - OPERATORS MANUAL RadioFans.CN 收音机爱 好者资料库 DECLARAT

5、ION OF CONFORMITY for FLUKE Timer / Counter PM 6666 Fluke Industrial B.V. Lelyweg 1 7602 EA Almelo The Netherlands Statement of Conformity Based on test results using appropriate standards, the product is in conformity with Electromagnetic Compatibility Directive 89/336/EEC Low Voltage Directive 73/

6、23/EEC Sample tests Standards used: IEC 348 (1978) Safety Requirements for Electronic Measuring Apparatus EN 50081-1 (1992) Electromagnetic Compatibility Generic Emission Standard: EN55011 EN 50082-1 (1992) Electromagnetic Compatibility Generic Immunity Standard: IEC801-2, -3, -4 The tests have been

7、 performed in a typical configuration. This Conformity is indicated by the symbol, i.e. “Conformit europenne”. DMB70-08-95206 Page: 2CONTENTS PM 6666 - OPERATORS MANUAL RadioFans.CN 收音机爱 好者资料库 Guarantee Statement This Fluke guarantee is in addition to all rights which the buyer may have against his

8、supplier under the sales agreement be- tween the buyer and the supplier and according to local legislation. Fluke guarantees this product to be free from defects in material and workmanship under normal use and service for a pe- riod of one (1) year from the date of shipment.This guarantee does not

9、cover possible required re-calibration and/or stand- ard maintenance actions. This guarantee extends only to the original end purchaser and does not apply to fuses, batteries or to any product or part thereof that has been misused, altered, or has been subjected to abnormal conditions of operation a

10、nd handling. Fluke-supplied software is guaranteed to be properly recorded on non-defective media.We will replace improperly recorded media without charge for 90 days after shipment upon receipt of the software. Our software is not guaranteed to be error free. Flukeobligation under this guarantee is

11、 limited to have repaired or replace a product that is returned to an authorized Fluke Service Center within the guarantee period, provided that Fluke determines that the product is defective and that the failure has not been caused by misuse, alteration or abnormal operation. Guarantee service for

12、products installed by Fluke will be performed at the Buyers facility at no charge within Flukeservice travel area; outside this area guarantee service will be performed at the Buyers facility only upon Fluke prior agreement and the Buyer shall pay Fluke round trip travel expenses. If a failure occur

13、s, send the product, freight prepaid, to the Service Center designated by Fluke with a description of the diffi- culty. At Flukeoption, repairs will be made or the product replaced. Fluke shall return the product, F.O.B. Repair Center, trans- portation prepaid, unless the product is to be returned t

14、o another country, in which case the Buyer shall pay all shipping charges, duties, and taxes. Fluke assume NO risk for damage in transit. Disclaimer The foregoing guarantee is exclusive and is in lieu of all other guarantees, expressed or implied, including but not limited to any implied guarantee o

15、f merchantability, fitness, or adequacy for any particular purpose or use. We shall not be liable for any direct, indirect, special incidental, or consequential damages, whether based on contract, tort, or otherwise. CONTENTSPage: 3 PM 6666 - OPERATORS MANUAL RadioFans.CN 收音机爱 好者资料库 SAFETY Introduct

16、ion Read this page carefully before you install and use the PM 6666 Timer/Counter. This Timer/Counter has been designed and tested in ac- cordance with IEC publication 1010-1, and CSA 22.2 No.231, and has been supplied in a safe condition.The user of this instrument must have the required knowledge

17、of PM 6666.This knowledge can be gained by thoroughly studying this manual. Safety Precautions Use generally-accepted safety procedures, in addition to the safety precautions stated in this manual, to ensure per- sonal safety and safe operation of the Timer/Counter. Caution See GPIB-bus operation. C

18、onnect the signal to INPUT-A via a BNC- cable. Connect the signal to INPUT-B via a BNC- cable. LOCAL RESET START/STOP TOTALIZE A HOLD DISPLAYMEASURING TIME 10s1s0.2sSINGLEREF EXT MAN TOT A B TOT A B TOT A A-B TIME A/B RATIO A PERIOD C FREQ A FREQ FUNCTION COMMON B via A VOLT A MAX-MIN LEVEL AUTO LEV

19、EL READ HOLD DISPL HOLD DISPLAYMEASURING TIME 10s1s0.2sSINGLEREF EXT MAN TOT A B TOT A B TOT A A-B TIME A/B RATIO A PERIOD C FREQ A FREQ FUNCTION COMMON B via A VOLT A MAX-MIN LEVEL AUTO LEVEL READ DC 160MHz 35pF 1M MAX 30Vrms A B 35pF 1M MAX 30Vrms Page: 16OPERATING INSTRUCTIONS PM 6666 - OPERATORS

20、 MANUAL FUNCTION AND RANGEHINTS AND COMMENTS When reset is depressed, the display and counting registers are cleared. When reset is released, a new measurement is started. The Measuring-time-, Function- and display hold- settings are not affected. If the TOT A MAN function is selected, the RESET/LOC

21、AL button functions as a START/STOP button. One press starts the counting and the next press stops it. A long de- pression results in reset. When the counter is controlled from the GPIB-Bus, the LOCAL button can be disabled via the Local Lock out command. Display hold freezes the display, but not un

22、til the measure- ment in process has been finished. A new measurement can always be initiated via the RESET button. Use this input for all functions except FREQ C. Input data: Range: DC Hz to 160 MHz Impedance: 1 M/35 pF. Min. pulse duration: 4 ns At higher frequencies; use a 50 termination type PM

23、9585 to avoid interference caused by impedance mismatch. The illustration below shows which function block each of the input controls affect. This input is used for Ratio A/B, Time A-B and TOT A start/stop (or gated) by B measurements. Range:Identical to Input-A Attenuator Attenuator DC/AC Switch DC

24、+Trigger level AC+Sensitivity Slope U U Counting logic Slope AC+Sensitivity DC+Trigger level DC/AC Switch Input-A Input-B Level Level COM B via A Figure 7Input Circuit Block Diagram. OPERATING INSTRUCTIONSPage: 17 PM 6666 - OPERATORS MANUAL CONTROLOPERATING THE CONTROL DISPLAYGPIB-CODE One ATTx1/x10

25、 push button for each of input A and B. Switch the indicator ON to select 10 times attenuation and OFF to switch off the attenuator. ATT ON ATT OFF You must first select input with INPA or INPB. One SLOPE push- button for each of input A and B. Switch the indicator ON to select negative slope, and O

26、FF to select positive slope. TRGSLP POS TRGSLP NEG You must first select input with INPA or INPB. One DC/AC push-button for each of input A and B. Switch the indicator ON to select AC and OFF to select DC. NOTE: Sensitivity can be set when AC-coupled and Trigger Level when DC-coupled. COUPL AC COUPL

27、 DC You must first select input with INPA or INPB. A depression switches the AUTO LEVEL indicator on or off. AUTO ON AUTO OFF Depress the SET VALUE button once and the indicator in the button switches on. Now the auto level and Read level buttons have the red arrow up and down function. Another pres

28、s will switch off the function. NOTE: Sensitivity can be set when AC-coupled and Trigger Level when DC-coupled. Separate Codes for trigger level and sensitivity SENS1 =20 mV SENS2 =50 mV SENS3 =100mV TRGLVL = 5.1 to +5.1 V. You must first select input with INPA or INPB. ATTx1 x10 DC AC AUTO LEVEL HO

29、LD DISPLAYMEASURING TIME 10s1s0.2sSINGLEREF EXT MAN TOT A B TOT A B TOT A A-B TIME A/B RATIO A PERIOD C FREQ A FREQ FUNCTION COMMON B via A VOLT A MAX-MIN LEVEL AUTO LEVEL READ SET A HOLD DISPLAYMEASURING TIME 10s1s0.2sSINGLEREF EXT MAN TOT A B TOT A B TOT A A-B TIME A/B RATIO A PERIOD C FREQ A FREQ

30、 FUNCTION COMMON B via A VOLT A MAX-MIN LEVEL AUTO LEVEL READ HOLD DISPLAYMEASURING TIME 10s1s0.2sSINGLEREF EXT MAN TOT A B TOT A B TOT A A-B TIME A/B RATIO A PERIOD C FREQ A FREQ FUNCTION COMMON B via A VOLT A MAX-MIN LEVEL AUTO LEVEL READ Page: 18OPERATING INSTRUCTIONS PM 6666 - OPERATORS MANUAL F

31、UNCTION AND RANGEHINTS AND COMMENTS When the indicator in the button is OFF, the signal is un-at- tenuated; the trigger level range is 5 V to +5 V and the sensitivity can be 0.02, 0.05 or 0.1 V. When the indicator is ON the signal is attenuated 10 times; the Trigger level range becomes 50 V to +50 V

32、 and the sensitivity becomes be 0.2 V, 0.5 or 1.0 V. If Auto Level or Volt is selected, the correct attenuator setting will be selected automatically. When the button indicator is ON, the active slope of the in- put is changed from positive to negative. Dual functions: 1)AC- or DC- coupled input. 2)

33、Selection of variable sensitivity (AC) with 0 V trigger level or selection of variable trigger level (DC) with maxi- mum sensitivity. NOTE: AC coupling together with Auto Level results in maximum sensitivity and automatic trigger level setting. You can remove any DC-component with AC-coupling. For f

34、requency, period, and ratio measurements: Select AC- coupling and set the sensitivity so that the hysteresis band of the Timer/Counter is about half the amplitude of the input signal. For time measurements: Select DC-coupling and set the trigger level to the desired level. The auto-level function al

35、ways sets the DC trigger-level to 50% of the amplitude, it does also switch on the attenuators when needed. Auto-level is selected simultaneously for both A and B inputs. The measuring rate is reduced to about two measurements/ second when using Auto-Level. The sensitivity is decreased to 150 mVpp,

36、and the minimum frequency is 100Hz. NOTE: Auto level gives automatic trigger level setting to AC coupled inputs also. Use Read-Level to check what trigger-levels Auto-Level has selected. For frequency, period, and ratio measurements: Select AC-coupling and set the sensitivity so that the hyster- esi

37、s band of the Timer/Counter is about half the amplitude of the input signal. For time measurements: Select DC-coupling and set the trigger level to the desired level. If the sensitivity is too high, the Timer/Counter will be triggered by noise and interference instead of by the signal. OPERATING INS

38、TRUCTIONSPage: 19 PM 6666 - OPERATORS MANUAL CONTROLOPERATING THE CONTROL DISPLAYGPIB-CODE The READ LEVEL push- button. When the indicator is on, the display shows the trigger levels on the display. LEVEL ALEVEL BUse INPA? and INPB? to read input settings to the controler The COMMON B via A push-but

39、ton. When the indicator is on the signal on Input-A is also connected to Input-B. COM ON COM OFF Connect the signal to INPUT-C via a BNC- cable. Connect an external 10 MHz frequency source to the BNC- connector on the rear panel of the Timer/Counter marked EXT REF INPUT. Not bus controllable. READ L

40、EVEL HOLD DISPLAYMEASURING TIME 10s1s0.2sSINGLEREF EXT MAN TOT A B TOT A B TOT A A-B TIME A/B RATIO A PERIOD C FREQ A FREQ FUNCTION COMMON B via A VOLT A MAX-MIN LEVEL AUTO LEVEL READ COM B via A HOLD DISPLAYMEASURING TIME 10s1s0.2sSINGLEREF EXT MAN TOT A B TOT A B TOT A A-B TIME A/B RATIO A PERIOD

41、C FREQ A FREQ FUNCTION COMMON B via A VOLT A MAX-MIN LEVEL AUTO LEVEL READ COPTION 70MHz - 1.3GHz MAX 12Vrms 50 10MHz 0.5-15Vrms EXT REF INPUT HOLD DISPLAYMEASURING TIME 10s1s0.2sSINGLEREF EXT MAN TOT A B TOT A B TOT A A-B TIME A/B RATIO A PERIOD C FREQ A FREQ FUNCTION COMMON B via A VOLT A MAX-MIN

42、LEVEL AUTO LEVEL READ Page: 20OPERATING INSTRUCTIONS PM 6666 - OPERATORS MANUAL FUNCTION AND RANGEHINTS AND COMMENTS When active, trigger levels will be displayed according to this table: Auto LevelManual DCLevel selectedLevel set using by Auto.Set Value. ACLevel selected0 V. by auto. Use Read-Level to check what trigger-levels Auto-Level has selected. When active, the signal on Input-A is also connected to In- put-B. The DC/AC and A