Bk-precision 4034 - Manual Manual do Utilizador

Model: 4033, 4034 50 MHz Programmable Pulse Generator USER MANUAL

10 2.6 Power Requirements The model 4033 and 4034 can be operated from any source of 100-240V +/-10% AC, at a frequency from 48Hz to 66Hz. The m

11 2.8.1 Maintaining Pulse Fidelity Due to the extremely fast pulse rise times obtained from the instrument, special consideration must be given

12 R1 R2 = Z1 Z2, and R1 Z1 = R2 (Z2-Z1) or and For example: to match a 50Ω system to a 125Ω system, Z1

13 The illustrated network can be modified to provide different attenuation ratios by adding another resistor (less than R1) between Z1 and th

14 DB-9 pin Name Note 1 2 3 4 5 6 7 8 9 - TXD RXD - GND - RTS CRS - - Transmit Data Receive Data - Signal ground - Request to Send Clear to send -

15 Section 3 Operating Instructions 3.1 General Description This section describes the displays, controls and connectors of the Model 4033 and

16 configurations (SETUP), and utility options (UTIL). 5. Numerical Keypad - Numeric entry keys for entering values for various functions and mod

17 2. General Waveform Display Displays the general waveform being generated in the channel. Note: Waveform shown is approximated and sc

18 Figure 3.3 - Back Panel View 1. Options 50 Ω - Reserved for future use. 2. Options TTL - Reserved for future use. 3. Trig

19 6. RS-232 Interface - This is a standard RS-232 port used for remote interface. Null modem or cross serial cable is required to communicate wi

2 Safety Summary The following safety precautions apply to both operating and maintenance personnel and must be observed during all phases of opera

20  TTL  CMOS  USER  HIPRED | LOPRED o OUTPUT LIMITS  LIM OF  LIM ON  HILIM  LOLIM  PREV - PULSE o RISE o FALL o EQUAL o NO

21 pulse mode is set to external width on, the value of the period may be changed but the value is not displayed, since the actual value of the per

22 Double Pulse 3.6.2 OUTPUT Menu The Output menu enables the pulse high and low levels to be set. The levels are limited by four factors: -

23 F5: OUTPUT LIMITS - Allows entering limits for the output levels to protect external devices connected to the unit output. Outpu

24 The transition time range is 5 ns to 100 ms, but the value is limited to a 20:1 ratio between the transition times. In addition, both

25 3.6.4 MODE Menu Selects the output trigger mode: CONT (Continuous), TRIG (Triggered), GATE (Gated), BRST (Burst) and EXTWID (External pulse)

26 After selecting the TRIG , GATE or BURST menu, the trigger source menu is available: For TRIG and GATE mode: Trigger Menu F1: MAN

27 99.99 s, although the minimum value is limited by the value of the period in that the rate cannot be less than the period. F3: EXT - Selects

28 3.6.6 UTILITY Menu Utility Menu F1: GPIB -Selects the GPIB remote mode of operation. After selection the GPIB address can be set to any

29 time-out. F4: POWER - (Power-on default) Selects the power-on default setting. Select a value using the data keys or the rotary input knob. T

3 CAUTION: Before connecting the line cord to the AC mains, check the rear panel AC line voltage indicator. Applying a line voltage other than th

30 3.10 Power-On Settings At power-on, the pulse generator performs a diagnostic self-test procedure to check itself for errors. When the pulse g

31 routine finds an error, an error message is displayed. The waveform generator also displays error messages when front-panel settings are either

32 In the SINGLE or DOUBLE pulse mode the instrument defines PERIOD as the time between the 50% points on the leading edges of two consecutive

33 Delay max = [(Period * 0.99) - Width –10 ns], but not > 9.80000 s Delay min = (Width + 10 ns) Double Pulse Transition Time Restrict

34 Pulse Definitions – Width, Period, and Delay Pulse Definitions – Period and delay – Double Pulse Mode 3rd Corner VARIABLE TRANSITION TIMES S

35 - Pulse Definitions – Settling Time Section 4 Programming 4.1 Overview 4.

36 EIA standard RS-232-C specifies the electrical characteristics and pin out of a serial communication standard for connecting "data termina

37 In the LOCS the device may be operated from the front panel only. Its settings may be queried over the GPIB, but not changed. Commands that do n

38 4.5.1 The Input Buffer The device has a 128-byte long cyclic input buffer. Decoding of remote messages begins as soon as the input buffer is n

39 4.8 Self Test The *TST common query causes the device to perform a self test. This self test consists of checking the functionality of the pul

4 Table of Contents Safety Summary ... 2 Section 1 ...

40 This means it is not necessary to write the mnemonic into the Program Header: it is a default condition. The 'SOURCE' mnemonic, for ex

41 A Program Message Unit having a colon as its first character causes the reference to return to the root. This process is defined by IEEE 488, se

42 is an 8-bit register whose bits correspond to those of the STB. The RQS bit in the STB is set when a bit in the STB is set, and its correspondi

43 4.10.5.1 Command Errors A command error is in the range -199 to -100, and indicates that a syntax error was detected. This includes the case

44 -222 Data out of range – The parameter exceeds the absolute limits 4.10.5.3 Device-Specific Errors An error specific to the device occurred.

45 For Model 4034 500 Trigger rate short on channel 1 501 Trigger rate short on channel 2 510 Output overload on channel 1 511 Output overl

46 Command Type: Common Command Syntax: *OPC Examples: PULS:PER 1US;*OPC The *OPC command (and the *OPC? query described below) find use mainly

47 4.11.4.3 *ESR? - Standard Event Status Register Query This query is used to read the value of the Standard Event Status Register. Reading the

48 Response: <NR1> The value of the Status Byte read with the *STB? query may differ from that read with the Serial Poll. Bit 6 of the STB w

49 4.12.1 SOURce Subsystem The Source Subsystem controls the frequency, voltage and pulse characteristics. The command structure is as follows:

5 4.6 Instrument Identification ...

50 Range: 0.1Hz to 50MHz Rounding: To the resolution of the range. Examples: :FREQ 5KHZ :FREQ 5E3 QUERY Syntax: [:SOURce]:FREQuency[:CW|:FIXe

51 Examples: :VOLT:LOW? Response: NRf CONSIDERATIONS: 1) The high level must be greater than the low level. 2) The difference between the level

52 4.12.1.6 Predefined Voltage Levels This command is used to set the pulse voltage levels to predefined values. Four predefined values are availa

53 QUERY Syntax: [:SOURce]:VOLTage:LIMit:LOW? Examples: :VOLT:LIM:LOW? Response: NRf CONSIDERATIONS: The low limit cannot be set greater than

54 Examples: :PULS:WIDT? Response: NRf CONSIDERATIONS: The allowed range of the width will be determined by the values of the period, delay, an

55 Syntax: [:SOURce]:PULSe:DCYCle? Examples: :PULS:DCYC? 4.12.1.13 Pulse Hold This command is used to determine whether the width or the duty c

56 is generated after a programmable delay. This delay is set by either the :PULSE:DELAY or the :PULSE:DOUBLE:DELAY command. COMMAND TYPE: Setting

57 Type: NRf Units: S (seconds), MS (milliseconds), US (microseconds), NS nanoseconds Range: 5NS to 10MS Rounding: To current resolution Exampl

58 500ns to 10us 5us to 100us 50us to 1ms 500us to 10ms 4.12.1.19 Pulse Polarity This command is used to control the polarity of the pulse, whic

59 4.12.2 OUTPut Subsystem The Output Subsystem controls characteristics of the source’s output. The OUTPut command controls whether the output

6 Section 1 Introduction 1.1 Introduction This manual contains information required to operate, program, check, and maintain the 50

60 BURSt Examples: :TRIG:MODE CONT :TRIG:MODE BURS QUERY Syntax: :TRIGger:MODE? Response: CONT | TRIG | GATE | BURS 4.12.3.2 Trigger Sourc

61 Arguments: Type: NRf Units: S (seconds), MS (milliseconds), US (microseconds), NS nanoseconds Range: 100NS to 99.99S Rounding: To current re

62 4.12.4 Status Subsystem This subsystem controls the SCPI-defined status reporting structures, which are the QUEStionable and OPERation status

63 4.12.5.1 GPIB Address Change This command is used to set the GPIB address. Setting the address to 31 puts the instrument in an 'off-bus&

64 Type: Boolean Examples: :SYST:SEC ON :SYST:SEC OFF QUERY Syntax: :SYSTem:SECurity[:STATe]? Response: 0 | 1 4.12.5.5 Power-on Buffer This

65 4.14 SCPI Command Tree 4.14.1 Root Node 4.14.2 SOURce Subsystem [:SOURce] :FREQuency [:CW FIXed] <NRf> :VOLTage :PULSe

66 4.14.3 OUTPut Subsystem 4.14.4 TRIGger Subsystem 4.14.5 STATus Subsystem :STATus [:EVENt]? :CONDition? :NTRansition <NRf>

67 4.14.6 SYSTem Subsystem 4.15 ASCII and GPIB Code Chart Hex Oct Dec ASCII Msg Hex Oct Dec ASCII Msg 00 000 0 NUL 20 040 32 SP MLA0 01 0

68 1D 035 29 GS 3D 075 61 = MLA29 1E 036 30 RS 3E 076 62 > MLA30 1F 037 31 US 3F 077 63 ? UNL Message Definitions DCL Devi

69 5D 135 93 MTA29 7D 175 125 } MSA29,PPD 5E 136 94 ^ MTA30 7E 176 126 ~ MSA30,PPD 5F 137 95 _ UNT 7F 177 127 DEL Message Defi

7 Specifications NOTE Specifications listed in manual are applicable after a powered 30 minute warm-up into a 50 Ω load All timing character

70 SERVICE INFORMATION Warranty Service: Please go the support and service section on our website www.bkprecision.com to obtain a RMA #. Return

71

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8 PULSE FUNCTIONS Single One pulse at each selected period up to 50 MHz repetition rate Double One pair of pulses at each period up to 25 MHz repet

9 Section 2 Installation 2.1 Introduction This section contains installation information, power requirements, initial inspection a