BRUEL & KJAER 2525 User Manual
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BRUEL & KJAER 2525 User Manual

Measuring amplifier
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Technical
Documentation
Measuring Amplifier Type 2525
Volume 2: Interface
Brüel
& Kjær
English BE 1394 – 11
B
K
7/6-'89

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Summary of Contents for BRUEL & KJAER 2525

  • Page 1 Technical Documentation Measuring Amplifier Type 2525 Volume 2: Interface Brüel & Kjær 7/6-'89 English BE 1394 – 11...
  • Page 3 Measuring Amplifier Type 2525 From Serial number: 1 714 773 May 2005 Brüel & Kjær BE 1394 – 11...
  • Page 4 All rights reserved. No part of this publication may be reproduced or distributed in any form, or by any means, without prior consent in writing from Brüel & Kjær A/S, Nærum, Denmark. 0 – 2 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...

  • Page 5: Table Of Contents

    The Channel_1 Header ....................6 – 2 Measurement Set-up Commands ................6 – 4 Display Set-up Commands..................6 – 22 Lin./dB Read-out ....................... 6 – 24 Reference_Generator....................6 – 25 BE 1394 – 11 Measuring Ampifier Type 2525 0 – 3 User Manual Vol.2...
  • Page 6 ....................9 – 1 Introduction ........................ 9 – 2 Channel Independent Commands................9 – 2 Channel_1 Dependent Commands ................9 – 4 10. Index ............................10 – 1 0 – 4 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...

  • Page 7: Introduction

    Chapter 1 Introduction About this Volume ....................... 1 – 2 Summary of Contents ......................1 – 2 BE 1394 – 11 Measuring Ampifier Type 2525 1 – 1 User Manual Vol.2...

  • Page 8: About This Volume

    This volume describes the programming and operation of the serial and parallel interfaces of the Measuring Amplifier Type 2525. It is intended as a reference guide for IEEE – 488/serial interface programmers and users. It is assumed that users are familiar with manual operation of the analyzer, described in Volume 1 of this User Manual, and have some experience in interface programming.

  • Page 9: The Ieee - 488 Interface

    ..................... 2 – 2 Activating the IEEE Interface ..................2 – 4 Local and Remote States ....................2 – 4 Listening and Talking ....................... 2 – 5 BE 1394 – 11 Measuring Ampifier Type 2525 2 – 1 User Manual Vol.2...

  • Page 10: Interface Specifications

    4metres (12ft). The IEEE interface connector of the 2525 is a 24-way female “micro-ribbon” as specified in IEEE Std 488. The amplifier can be connected to other instruments fitted with this type of connector using the 2m long Brüel&Kjær IEEE Interface Cable,...
  • Page 11 Most system controllers set the REN line to its “true” state immediately on taking control of the bus. For further details of how this function is implemented in the 2525, see section 2.3 and section 5.2. The IFC Line The Interface Clear line resets the interface circuitry to a known operational state.

  • Page 12: Activating The Ieee Interface

    Only if the message Remote OFf or Remote ON is sent Local will the 2525 be returned to Local or Remote without lockout mode. When the 2525 is in Remote state, a message indicates this on the bottom line of the amplifier’s screen. 2 – 4 Measuring Ampifier Type 2525 Brüel &...

  • Page 13: Listening And Talking

    The amplifier is addressed as a Listener or a Talker when it is addressed as such by a controller. The 2525 is un-addressed as a listener in one of the following ways: A controller sets the IFC (interface clear) bus line.
  • Page 14 2 – 6 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...

  • Page 15: The Serial Interface

    Chapter 3 The Serial Interface Hardware/Functional Specifications ................3 – 2 Serial Interface Set-up ...................... 3 – 4 BE 1394 – 11 Measuring Ampifier Type 2525 3 – 1 User Manual Vol.2...

  • Page 16: Hardware/Functional Specifications

    The interface connector is a 9-pin D-range male connector. It is located on the rear panel of the 2525; see Volume 1 of this User Manual (section 3.2) for details. Fig. 3.1 shows the numbering of the pins on the connector. Pin definitions are given in Table 3.1.
  • Page 17 The use of the control lines is described further in section 3.2.3. 3.1.4 Cables A null-modem cable must be used to interface the 2525 to another DTE-coupled device (computer). Interface cables can be ordered from Brüel&Kjær. BE 1394 – 11 Measuring Ampifier Type 2525 3 –...

  • Page 18: Serial Interface Set-Up

    You can select one of three options: X-On/X-Off handshake: The 2525 transmits the X-Off character (ASCII 19) when it can handle no more input data. When the 2525 is once again ready to receive data, it transmits the X-On character (ASCII 17) over the interface.
  • Page 19 When it is ready to receive more data, the RTS line is set on. When the external device sets the CTS control line (pin 8 of the 2525) off, the 2525 stops transmitting until CTS goes back on.
  • Page 20 3 – 6 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...

  • Page 21: Syntax And Data Types

    Chapter 4 Syntax and Data Types Formats for Interface Messages ..................... 4 – 2 Types of Data ............................4 – 6 Information Protocol ........................4 – 9 BE 1394 – 11 Measuring Ampifier Type 2525 4 – 1 User Manual Vol.2...

  • Page 22: Formats For Interface Messages

    Formats for Interface Messages 4.1.1 Terminology for Interface Messages The data transmitted to and from the Type 2525 Amplifier conforms to a subset of the ANSI/IEEE Standard, IEEE 488.1 (1987), “IEEE Standard Codes, Formats, Pro- tocols and Common Commands”. Both the IEEE and serial interfaces are used to transfer data to and from the amplifier.
  • Page 23 The type of the data item, and its allowed length in parentheses are, where appropriate, given in the lower right-hand corner. Circular symbols enclose single character literal data that must be included in the BE 1394 – 11 Measuring Ampifier Type 2525 4 – 3 User Manual Vol.2...
  • Page 24 4.1.3 General Rules for Constructing an Interface Message The 2525 allows you to input the message headers and any character type data fields in full. For ease of use, the data field names correspond to those on the amplifier’s menu and screen texts wherever possible.
  • Page 25 EOI line of the interface is activated together with the last valid data byte of the interface message. On the serial interface the <Te> is considered to be a LF. BE 1394 – 11 Measuring Ampifier Type 2525 4 – 5 User Manual Vol.2...

  • Page 26: Types Of Data

    44 (Decimal), and 59 (Decimal). Fig.4.3 shows the valid form of entry for character data. Any Printing Alpha ASCII Char. Except SP , ; DEL 931103e Fig.4.3 General syntax for character data fields 4 – 6 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 27 NR1 (1-3) – Suffix (input only) 931106e Fig.4.5 Syntax for numerical data of type NR3 A digit is any of the 10 number symbols, 0 through 9. BE 1394 – 11 Measuring Ampifier Type 2525 4 – 7 User Manual Vol.2...
  • Page 28 When a syntax diagram illustrates the input of numeric data, an explanation is given as to how the 2525 accepts the numeric data. A legal range is always given (unless only specific values are al- lowed, and these are shown), and the value received by the amplifier is rounded so that it lies within the allowable range.

  • Page 29: Information Protocol

    The Header command allows you to specify how the response messages are to be sent from the amplifier: If you specify OFF, no header will be returned to you by the am- plifier as a query response. BE 1394 – 11 Measuring Ampifier Type 2525 4 – 9 User Manual Vol.2...
  • Page 30 You can query the amplifier regarding the header setting as shown in Fig.4.10. The default setting is Long To 2525 HEADER? From 2525 Header HEADER — Char Header OFf 941272e Fig.4.10 Syntax for Header? query and amplifier response 4 – 10 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 31 Main_Set_Up To 2525 MAIN_SET_UP 941166e Fig.4.11 Syntax for Main_Set_Up Main_Set_Up is the Header sent to the amplifier to get the Main Set-up menu on the display. BE 1394 – 11 Measuring Ampifier Type 2525 4 – 11 User Manual Vol.2...
  • Page 32 4 – 12 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...

  • Page 33: General Control Messages

    ............................5 – 2 Remote/Local Set-up ........................5 – 2 Status and Configuration Check ................... 5 – 3 Error Check and Reset ....................... 5 – 22 BE 1394 – 11 Measuring Ampifier Type 2525 5 – 1 User Manual Vol.2...

  • Page 34: Introduction

    * Note that it is possible via the IEEE–488 interface to alter the Remote/Local state of the amplifier using standard IEEE–488 messages (GTL, LLO, REN, etc.). See section 2.3 5 – 2 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...

  • Page 35: Status And Configuration Check

    Example: A response value of 13 means that bit 1, bit 3 and bit 4 were set, corresponding to Common_Mode_Overload, ALArm and Deltatron_Error. BE 1394 – 11 Measuring Ampifier Type 2525 5 – 3 User Manual Vol.2...
  • Page 36 Logic diagram showing relationship among event and event enable registers and the Status Byte To 2525 CHANNEL_1 MEASUREMENT_STATUS? From 2525 Value MEASUREMENT_STATUS CHANNEL_1 — Header OFf 941129e Fig.5.3 Syntax for Measurement_Status? query and amplifier response 5 – 4 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 37 Chapter 5 – General Control Messages Status and Configuration Check Function Value Common_Mode_Overload Signal_Overload ALArm Deltatron_Error Upper_20_Db Auto_Ranging Detector_Overload not defined Table 5.1 The values contained in the Measurement_Status Event Register BE 1394 – 11 Measuring Ampifier Type 2525 5 – 5 User Manual Vol.2...
  • Page 38 An exception to this is the case in which all bits are set using ALL. None is used to clear all the bits. 5 – 6 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 39 The query Measurement_Status_Enable? returns the value or options set, as shown in Fig.5.5. To 2525 CHANNEL_1 MEASUREMENT_STATUS_ENABLE? From 2525 Value CHANNEL_1 MEASUREMENT_STATUS_ENABLE — Header OFf 941131e Fig.5.5 Syntax for Measurement_Status_Enable? query and amplifier response BE 1394 – 11 Measuring Ampifier Type 2525 5 – 7 User Manual Vol.2...
  • Page 40 (see Table 5.3). Function Value Measurement_Finished Settling_Finished not defined not defined not defined not defined not defined not defined Table 5.3 Values contained in the Operation_Complete event reg- ister 5 – 8 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 41 None Measurement_Finished Settling_Finished not defined not defined not defined not defined not defined not defined Table 5.4 The values contained in the Operation_Complete Event Enable Register BE 1394 – 11 Measuring Ampifier Type 2525 5 – 9 User Manual Vol.2...
  • Page 42 Chapter 5 – General Control Messages Status and Configuration Check To 2525 CHANNEL_1 OPERATION_COMPLETE_ENABLE? From 2525 Value CHANNEL_1 OPERATION_COMPLETE_ENABLE — Header OFf 941134e Fig.5.8 Syntax for Operation_Complete_Enable? query and amplifier response 5 – 10 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 43 Note: The message has an effect even though Digits_And_Select has not been se- lected in Display_Mode, since the current measurement type is defined as the measurement result type shown had the Digits_And_Select option been chosen. BE 1394 – 11 Measuring Ampifier Type 2525 5 – 11 User Manual Vol.2...
  • Page 44 Note: The message only has an effect when Digits_And_Select has been selected in Display_Mode, and the amplifier is currently measuring and showing a measure- ment result together with the set-up lines. 5 – 12 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 45 After the key buffer has been read-out (or following a Reset System command message, see section 5.4), the buffer is reset and the count set to 0. Example (long): 7,Local,SET-UP,UP,UP,SET-UP,DOWN,SET-UP Example (short): 7,L,S_U,U,U,S_U,D,S_U Example (off): 7,L,S_U,U,U,S_U,D,S_U BE 1394 – 11 Measuring Ampifier Type 2525 5 – 13 User Manual Vol.2...
  • Page 46 The contents of the Status Byte appear as shown in Table 5.5. Note: Using the IEEE–488 interface, the content of the Status Byte may be read using the Serial Poll function of the connected computer or controller. 5 – 14 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 47 Chapter 5 – General Control Messages Status and Configuration Check Function Value Measurement_Status Operation_Complete Device_Status Abnormal Table 5.5 The Status Byte settings BE 1394 – 11 Measuring Ampifier Type 2525 5 – 15 User Manual Vol.2...
  • Page 48 (string) field. This information can also be obtained by accessing the built-in self- test program using the appropriate pushkey sequence on the amplifier – see Vol. 1, Chapter 3. In the case of the Type 2525 amplifier, the channel count is always 1. Example (long): :Configuration 0,1,0,1,1,32,1,0,1,"No internal filter connected Channel 1"...
  • Page 49 Chapter 5 – General Control Messages Status and Configuration Check Example (short): :C 0,1,0,1,1,32,1,0,1,"No internal filter connected Channel 1", Example (off): 0,1,0,1,1,32,1,0,1,"No internal filter connected Channel 1", BE 1394 – 11 Measuring Ampifier Type 2525 5 – 17 User Manual Vol.2...
  • Page 50 941162e Fig.5.15 Syntax for Identify? query and amplifier response The Identify? query returns the device ID, which for the amplifier is “B&K 2525”. This is a standard Brüel & Kjær method of determining which device is currently connected via the interface.
  • Page 51 Note: Interface parameters are not returned since they can only be set manually. The information returned by the amplifier after receiving the Recall_Work? query includes the following: Channel_1 (channel-dependent) parameter settings (for the 2525 always Channel_1) Main_Set_Up (channel-independent) parameter settings...
  • Page 52 A_F N;R_A_T E,1;P_H_T 5;A_R OF;A_O_O OF;A_D R,1.26E+08;A_H_T 1; A_L_E_T 1;D_D_O R;R_G OF;M_I_F 3E+04;M_S_E 0;O_C_E 0;:D_S_U CH1_R, CH1_PO_P,CH1_N_P;:R_O L;:S_I_U S;:D_P F;:D_M D_A_B_G;:B_L OF;:H S Example (off): A;1E-12;C_S_E;-20;0;0;10000;1;N;E,1;5;OF;OF;R,1.26E+08;1;1;R;OF; 3E+04;0;0;CH1_R,CH1_PO_P,CH1_N_P;L;S;F;D_A_B_G;OF;OF 5 – 20 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 53 10 μV to 355 mV (Display_Mode Displacement) 1 μV to 35.5 mV (Display_Mode Velocity) 10 nV to 355 kV (Display_Mode Acceleration) 10 nV to 355kV (Display_Mode Force) BE 1394 – 11 Measuring Ampifier Type 2525 5 – 21 User Manual Vol.2...

  • Page 54: Error Check And Reset

    All_Event_Registers All_Event_Enable_Registers reset Measurement_Status and the Operation_Complete Event and Event Enable Regis- ters respectively. You can reset the Status_Byte or the entire System using Reset, as shown. 5 – 22 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 55 Chapter 5 – General Control Messages Error Check and Reset To 2525 ALL_CHANNELS ALL_DETECTORS ALL_EVENT_REGISTERS RESET — ALL_EVENT_ENABLE_REGISTERS STATUS_BYTE SYSTEM 941176e Fig.5.19 Syntax for Reset command BE 1394 – 11 Measuring Ampifier Type 2525 5 – 23 User Manual Vol.2...
  • Page 56 Note: After the error number is reset, only the first occurring error (device error or interface error) is saved in Error No. Succeeding errors will not affect the response of the Job_Status? query or the Error? query. 5 – 24 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 57 No is set to 0. See Chapter 8 for a detailed listing of all interface and device errors. Example (long): :Error 1,"Header not found","meas_data:all?^EOI" Example (short): :E 1,"Header not found","meas_data:all?^EOI" Example (off): 1,"Header not found","measurement_data:all?^EOI" BE 1394 – 11 Measuring Ampifier Type 2525 5 – 25 User Manual Vol.2...
  • Page 58 5 – 26 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...

  • Page 59: Set-Up And Display (Results) Messages

    Mounted Impulse/Resonance Frequency Commands ..........6 – 28 6.10 Display_Mode ............................ 6 – 30 6.11 Set-up Memory Commands ..................... 6 – 31 6.12 Back_Lighting ........................... 6 – 32 BE 1394 – 11 Measuring Ampifier Type 2525 6 – 1 User Manual Vol.2...

  • Page 60: Introduction

    Channel_1. Note: That channel-dependent parameters follow the Channel_1 header command is an result of the 2525 being a member of a family of multichannel amplifiers. As Channel_1 is the only option for the single-channel 2525, it can often be bypassed.
  • Page 61 :C_1:M_M A;T_S 1E-12;I_T C_S_E;I_G -20;F_G 0;O_G 0;U_F_L 10000; L_F_L 1;A_F N;R_A_T E,1;P_H_T 5;A_R OF;A_O_O OF; A_D R,1.26E+08;A_H_T 1;A_L_E_T 1;D_D_O R;R_G OF;M_I_F 3E+04; M_S_E 0;O_C_E 0 Example (off): A;1E-12;C_S_E;-20;0;0;10000;1;N;E,1;5;OF;OF;R,1.26E+08;1;1;R;OF;3E+04;0;0 BE 1394 – 11 Measuring Ampifier Type 2525 6 – 3 User Manual Vol.2...

  • Page 62: Measurement Set-Up Commands

    Fig.6.3. To 2525 CHANNEL_1 MEASUREMENT_MODE? From 2525 Value CHANNEL_1 MEASUREMENT_MODE — Char Header OFf 941127e Fig.6.3 The syntax for the query Measurement_Mode? and amplifier response 6 – 4 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 63 The syntax for the query, and the analyzer’s response, are shown in Fig.6.5. To 2525 CHANNEL_1 TRANSDUCER_SENSITIVITY? From 2525 Value TRANSDUCER_SENSITIVITY CHANNEL_1 — Header OFf 941148e Fig.6.5 The syntax for the query Transducer_Sensitivity? and amplifier response BE 1394 – 11 Measuring Ampifier Type 2525 6 – 5 User Manual Vol.2...
  • Page 64 The syntax for query and response are shown in Fig.6.7. To 2525 CHANNEL_1 INPUT_TYPE? From 2525 Value CHANNEL_1 INPUT_TYPE — Char Header OFf 941123e Fig.6.7 The syntax for the query Input_Type? and amplifier response 6 – 6 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 65 The syntax for the query appears in Fig.6.9. To 2525 CHANNEL_1 INPUT_GAIN? From 2525 Value CHANNEL_1 INPUT_GAIN — Header OFf 941111e Fig.6.9 Syntax for the query Input_Gain? and amplifier response BE 1394 – 11 Measuring Ampifier Type 2525 6 – 7 User Manual Vol.2...
  • Page 66 The syntax for the query appears as shown in Fig.6.11. To 2525 CHANNEL_1 FINE_GAIN? From 2525 Value CHANNEL_1 FINE_GAIN — Header OFf 941110e Fig.6.11 The syntax for the query Fine_Gain? and amplifier response 6 – 8 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 67 The syntax for the query is shown in Fig.6.13. To 2525 CHANNEL_1 OUTPUT_GAIN? From 2525 Value CHANNEL_1 OUTPUT_GAIN — Header OFf 941138e Fig.6.13 Syntax for the query Output_Gain? and amplifier response BE 1394 – 11 Measuring Ampifier Type 2525 6 – 9 User Manual Vol.2...
  • Page 68 The syntax for the query and amplifier response are shown in Fig.6.15. To 2525 CHANNEL_1 UPPER_FREQUENCY_LIMIT? From 2525 Value CHANNEL_1 UPPER_FREQUENCY_LIMIT — NR/Char Header OFf 941150e Fig.6.15 The syntax for the query Upper_Frequency_Limit? and amplifier response 6 – 10 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 69 The syntax for the query and amplifier response are shown in Fig.6.17. To 2525 CHANNEL_1 LOWER_FREQUENCY_LIMIT? From 2525 Value LOWER_FREQUENCY_LIMIT CHANNEL_1 — Char/NR Header OFf 941125e Fig.6.17 The syntax for the query Lower_Frequency_Limit? and amplifier response BE 1394 – 11 Measuring Ampifier Type 2525 6 – 11 User Manual Vol.2...
  • Page 70 The syntax for the query is shown in Fig.6.19 To 2525 CHANNEL_1 ADDITIONAL_FILTER? From 2525 Filter Value CHANNEL_1 ADDITIONAL_FILTER — Char Header OFf 941104e Fig.6.19 The syntax for the query Additional_Filter? and amplifier response 6 – 12 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 71 To 2525 CHANNEL_1 RMS_AVERAGING_TIME? From 2525 Avg Mode Avg Time CHANNEL_1 RMS_AVERAGING_TIME — Char Header OFf 941145e Fig.6.21 The syntax for the query Rms_Averaging_Time and amplifier response BE 1394 – 11 Measuring Ampifier Type 2525 6 – 13 User Manual Vol.2...
  • Page 72 Fig.6.23. To 2525 CHANNEL_1 PEAK_HOLD_TIME? From 2525 Value CHANNEL_1 PEAK_HOLD_TIME — Char/NR Header OFf 941140e Fig.6.23 The syntax for the query Peak_Hold_Time? and amplifier response 6 – 14 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 73 Auto_Range. To 2525 CHANNEL_1 AUTO_RANGE? From 2525 Autorange Value CHANNEL_1 AUTO_RANGE — Char Header OFf 941108e Fig.6.25 The syntax for the query Auto_Range? and amplifier response BE 1394 – 11 Measuring Ampifier Type 2525 6 – 15 User Manual Vol.2...
  • Page 74 The query/amplifier response syntax is shown in Fig.6.27. To 2525 ALARM_ON_OFF? CHANNEL_1 From 2525 On/Off par CHANNEL_1 ALARM_ON_OFF — Char Header OFf 941107e Fig.6.27 The syntax for the query Alarm_On_Off? and amplifier response syntax 6 – 16 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 75 That is the resolution of 1 dB (1.12 abs) of GDB. For example a sequence of 100, 112, 126, 141, 158, and so on. The default level (at factory set-up) is: BE 1394 – 11 Measuring Ampifier Type 2525 6 – 17 User Manual Vol.2...
  • Page 76 The syntax for the query is shown in Fig.6.29. To 2525 CHANNEL_1 ALARM_DETECTOR? From 2525 Value CHANNEL_1 ALARM_DETECTOR — Char Header OFf 941103e Fig.6.29 The syntax for the query Alarm_Detector and amplifier response 6 – 18 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 77 To 2525 CHANNEL_1 ALARM_HOLD_TIME? From 2525 Alarm Hold Time CHANNEL_1 ALARM_HOLD_TIME — Char/NR Header OFf 941105e Fig.6.31 The syntax for the query Alarm_Hold_Time? and amplifier response BE 1394 – 11 Measuring Ampifier Type 2525 6 – 19 User Manual Vol.2...
  • Page 78 The syntax for the query is shown in Fig.6.33. To 2525 CHANNEL_1 ALARM_LEVEL_EXCEED_TIME? From 2525 Time ALARM_LEVEL_EXCEED_TIME CHANNEL_1 — Header OFf 941106e Fig.6.33 The syntax for the query Alarm_Level_Exceed_Time? and amplifier response 6 – 20 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 79 941109e Fig.6.35 The syntax for the query Detector_Dc_Output? and amplifier response Round: Nearest Resolution: As shown The syntax for the query appears as shown in Fig.6.35. BE 1394 – 11 Measuring Ampifier Type 2525 6 – 21 User Manual Vol.2...

  • Page 80: Display Set-Up Commands

    103. However: Display_Set_Up CH1_Rms,CH1_POsitive_Peak,CH1_PEak_Peak is legal, as is: Display_Set_Up, CH1_Rms,OFf,OFf The syntax for the query appears as shown in Fig.6.37. 6 – 22 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 81 Display Par 1 Display Par 2 Display Par 3 DISPLAY_SET_UP — Char Char Char Header OFf 941159e Fig.6.37 The syntax for the query Display_Set_Up? and amplifier response BE 1394 – 11 Measuring Ampifier Type 2525 6 – 23 User Manual Vol.2...

  • Page 82: Lin./Db Read-Out

    The syntax for the query appears as shown in Fig.6.39 To 2525 READ_OUT? From 2525 Readout Format READ_OUT — Char Header OFf 941172e Fig.6.39 The syntax for the query Read_Out? and amplifier re- sponse 6 – 24 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...

  • Page 83: Reference_Generator

    Fig.6.41 The syntax for the query Reference_Generator? and amplifier response Si_Imperial_Units The Si_Imperial_Units command syntax appears as shown in Fig.6.42. The default selection is Si. The syntax for the query appears as shown in Fig.6.43. BE 1394 – 11 Measuring Ampifier Type 2525 6 – 25 User Manual Vol.2...

  • Page 84: Si_Imperial_Units

    Fig.6.42 The syntax for the command Si_Imperial_Units To 2525 SI_IMPERIAL_UNITS? From 2525 Unit Type SI_IMPERIAL_UNITS — Char Header OFf 941180e Fig.6.43 The syntax for the query Si_Imperial_Units? and am- plifier response 6 – 26 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...

  • Page 85: Decimal_Point

    The syntax for the query is shown in Fig.6.45. To 2525 DECIMAL_POINT? From 2525 Decimal Point DECIMAL_POINT — Char Header OFf 941153 Fig.6.45 The syntax for the query Decimal_Point? and amplifier response BE 1394 – 11 Measuring Ampifier Type 2525 6 – 27 User Manual Vol.2...

  • Page 86: Mounted Impulse/Resonance Frequency Commands

    The syntax for the query is shown in Fig.6.47. To 2525 CHANNEL_1 MOUNTED_IMPULSE_FREQUENCY? From 2525 Value CHANNEL_1 MOUNTED_IMPULSE_FREQUENCY — Header OFf 941133e Fig.6.47 The syntax for the query Mounted_Impulse_Frequency? and amplifier response 6 – 28 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 87 Mounted_Impulse_Frequency (see Volume 1, Chapter 4) and has values as follows: Range: 3E+03 to 60E+03 Hz Resolution: 10 Hz within 3E+03 to 10E+03 Hz 100 Hz within 10E+03 to 60E+03 Hz BE 1394 – 11 Measuring Ampifier Type 2525 6 – 29 User Manual Vol.2...

  • Page 88: Display_Mode

    The syntax for the query is shown in Fig.6.50 To 2525 DISPLAY_MODE? From 2525 Display Mode DISPLAY_MODE — Char Header OFf 941157e Fig.6.50 The syntax for the query Display_Mode? and amplifier response 6 – 30 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...

  • Page 89: 6.11 Set-Up Memory Commands

    Fig.6.52 The syntax for the command Recall_Set_Up If Factory is not selected, then Setup No. is specified as follows: Range: 1 to 8 Resolution: Round: Nearest BE 1394 – 11 Measuring Ampifier Type 2525 6 – 31 User Manual Vol.2...

  • Page 90: Back_Lighting

    The syntax for the query is shown in Fig.6.54. To 2525 BACK_LIGHTING? From 2525 Display Light BACK_LIGHTING — Char Header OFf 941155e Fig.6.54 The Back_Lighting query syntax 6 – 32 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...

  • Page 91: Measurement Data

    Chapter 7 Measurement Data Introduction ............................7 – 2 Output Examples ..........................7 – 3 BE 1394 – 11 Measuring Ampifier Type 2525 7 – 1 User Manual Vol.2...

  • Page 92: Introduction

    Complete Event Register respectively. See section 5.3.2 . Note: When autoranging is on, the corresponding measurement results will be “0”. This can be observed in the Measurement_Status (Status Box 1). 7 – 2 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...

  • Page 93: Output Examples

    Output Examples 7.2.1 Example 1: Current_Data? Long: :Measurement_Data:Current_Data 0.707,0,3,1.0,0,3,1.0,0,3 Short: :M_D:C_D 0.707,0,3,1.0,0,3,1.0,0,3 Off: 0.707,0,3,1.0,0,3,1.0,0,3 7.2.2 Example 2: All_Data? Long: :Measurement_Data:All_Data 0.707,0,3,1.0,0,3,1.0,0,3,2.0,0,3 Short: :M_D:A_D 0.707,0,3,1.0,0,3,1.0,0,3,2.0,0,3 Off: 0.707,0,3,1.0,0,3,1.0,0,3,2.0,0,3 BE 1394 – 11 Measuring Ampifier Type 2525 7 – 3 User Manual Vol.2...
  • Page 94 7 – 4 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...

  • Page 95: Interface Error Messages

    Chapter 8 Interface Error Messages Error Handling ..........................8 – 2 Interface Errors ..........................8 – 3 Device Errors ............................8 – 4 BE 1394 – 11 Measuring Ampifier Type 2525 8 – 1 User Manual Vol.2...

  • Page 96: Error Handling

    The error record is reset whenever it is read out using the Error? interface mes- sage. The 2525 does not stop reading data from its interface, but the parser is reset each time a Program Message Terminator (<Te>) is recognized.

  • Page 97: Interface Errors

    The response to the previous query message was not read Output is cancelled from the 2525 The 2525 interface is in a deadlock condition caused by input Deadlocked buffer full, parser blocked, response formatter blocked and out- put buffer full. Avoid this by always reading the response to a...

  • Page 98: Device Errors

    This message is only relevant with different RMS averaging for amplifiers with more than one channel (not the 2525). time or mode The measurement mode must be the same for all channels in a Vector sum is not permitted vector sum.

  • Page 99: Command Summary

    Chapter 9 Command Summary Introduction ..........................9 – 2 Channel Independent Commands ................9 – 2 Channel_1 Dependent Commands ................9 – 4 BE 1394 – 11 Measuring Ampifier Type 2525 9 – 1 User Manual Vol.2...

  • Page 100: Introduction

    Commands” respectively. This organization reflects the (sometimes op- tional) use of the command Channel_1 before a number of parameters. The use of this header reflects the 2525’s membership in a family of amplifiers, some of which have more than one channel.
  • Page 101 5.4.1 All_Detectors All_Event_Registers All_Event_Enable_Registers Status_Byte System Si_Imperial_Units Char. Si_Imperial_Units? Imperial Status_Byte? 5.3.3 Store_Set_Up 1 to 8 6.11 Table 9.1 (cont.) Command Summary – Channel independent commands BE 1394 – 11 Measuring Ampifier Type 2525 9 – 3 User Manual Vol.2...

  • Page 102: Channel_1 Dependent Commands

    Input_Gain? Input_Type Char. Charge_Floating 6.3.3 Input_Type? Charge_Single_Ended Deltatron Lower_Frequency_Limit 0.1, 0.3, 1.0, 3.0, 10, 30 Hz 6.3.6 Lower_Frequency_Limit? Char. Table 9.2 Command Summary – Channel_1 Dependent Commands 9 – 4 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...
  • Page 103 (default = 5.0) Char. Infinite Reference_Generator Char. Reference_Generator? Reset_Single Char. Alarm 5.4.1 Channel Detectors Measurement_Status Measurement_Status_Enable Operation_Complete Operation_Complete_Enable Table 9.2 (cont.) Command Summary – Channel_1 Dependent Commands BE 1394 – 11 Measuring Ampifier Type 2525 9 – 5 User Manual Vol.2...
  • Page 104 1, 10 s) Transducer_Sensitivity 0.0001E–12 to 10.0E–09 6.3.2 Transducer_Sensitivity? (default = 1.0E–12) Upper_Frequency_Limit 1.0E+03, 3.0E+03, 10.0E+03, 6.3.5 Upper_Frequency_Limit? 30.0E+03 Char. Table 9.2 (cont.) Command Summary – Channel_1 Dependent Commands 9 – 6 Measuring Ampifier Type 2525 Brüel & Kjær User Manual Vol.2...

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