固纬gds-800系列示波器pc连接程序的详细使用.pdf-资料库

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GDS-806/810/820/840 Programming Manual Table of Contents Pages 1. INTRODUCTION................................................................................................................... 2 2. COMPUTER’S CONNECTION............................................................................................. 6 3. REMOTE CONTROL'S COMMANDS ................................................................................ 12 4. DETAILS OF COMMAND REFERENCE ........................................................................... 19 5. STATUS REPORTS............................................................................................................ 73 6. PROGRAM TEMPLATE FOR GPIB................................................................................... 81 7. APPENDIX A: HOW CAN WE CONVERT THE HEXADECIMAL FORMAT TO A FLOATING POINT FORMAT. ................................................................................................ 89 Due to continuous improvements in the GDS-806/810/820/840 Digital Storage Oscilloscope, information contained in this manual is subject to change without notice. Contact GOOD WILL, for revisions and corrections. GOOD WILL Instrument Co., LTD. No.7-1, Jhongsing Rd., Tucheng City, Taipei County 236, Taiwan Telephone – 886-2-22680389 Fax – 886-2-22680639 E-mail - marketing@goodwill.com.tw http://www.goodwill.com.tw 0

GDS-806/810/820/840 Programming Manual 1. Introduction Users can drive this digital storage oscilloscope by using the GPIB (General Purpose Interface Bus) system with a computer, or from a computer across the RS-232 serial connection. Commands sent over either interface can read or set any oscilloscope’s instructions. This chapter explains how to carry out the following tasks. Notes for GPIB installation If you are setting up the oscilloscope with a GPIB system, please check the following regulations: Only a maximum of 15 devices can be connected to a single GPIB bus. Do not use more than 20 m of cable to connect devices to a bus. Connect one device for every 2 m of cable used. Each device on the bus needs a unique device address. No two devices can share the same device address. Turn on at least two-thirds of the devices on the GPIB system while you use the system. Do not use loop or parallel structure for the topology of GPIB system. 1

GDS-806/810/820/840 Programming Manual Notes for RS-232 Configuration This oscilloscope contains a DB 9-pin, male RS-232 connector for serial communication with a computer or terminal. The RS-232 interface of this oscilloscope is configured as an RS-232 “Data Terminal Equipment”, so that data is sent from pin 3 and received on pin 2. For remote controls, the RS-232 interface has to be connected with a computer or terminal. Pin Assignments The pin assignments for RS-232 interface of the oscilloscope are listed below. 1. No connection 2. Receive Data(RxD) 3. Transmit Data(TxD) 4. No connection 5. Signal Ground 6. No connection 7. No connection 8. No connection 9. No connection (input) (output) (GND) Figure 1-1: Pin assignments for the RS232 connector DB9 to DB9 Wiring The wiring configuration is used for computer with DB9 connectors that configured as Data Terminal Equipment. Oscilloscope (DB9, DTE) Computer (DB9, DTE) Pin2 Pin3 Pin5 Pin2 Pin3 Pin5 Figure 1-2: DB9 to DB9 wiring 2

GDS-806/810/820/840 Programming Manual When the oscilloscope is set up with a RS-232 interface, please check the following points: Do not connect the output line of one DTE device to the output line of the other. Many devices require a constant high signal on one or more input pins. Ensure that the signal ground of the equipment is connected to the signal ground of the external device. Ensure that the chassis ground of the equipment is connected to the chassis ground of the external device. Do not use more than 15m of cable to connect devices to a PC. Ensure the same configurations are used on the device as the one used on PC terminal. Ensure the connector for the both side of cable and the internal connected line are met the demand of the instrument. Computer’s Connection for RS-232 A personal computer with a COM port is the essential facilities in order to operate the digitizing oscilloscope via RS-232 interface. The connections between oscilloscope and computer are as follows: I. II. Connect one end of a RS-232 cable to the computer. Connect the other end of the cable to the RS-232 port on the oscilloscope. III. Turn on the oscilloscope. IV. Turn on the computer. Figure 1-3, shows the GPIB port and RS-232 port’s locations on the rear panel of the oscilloscope. 3

GDS-806/810/820/840 Programming Manual Figure 1-3. Rear panel of the oscilloscope (1): Main power switch (2): AC power socket (3): GPIB port (option for all series oscilloscopes) (4): Fuse drawer (5): “SELF CAL” BNC output (6): “GO/NO GO” BNC output (option for GDS-806/810) (7): USB connector (option for GDS-806/810) (8): Printer port (option for GDS-806/810) (9): RS-232 port 4

GDS-806/810/820/840 Programming Manual 2. Computer’s Connection A personal computer with a GPIB card is the essential stuff in order to operate the oscilloscope via GPIB interface. The connections between oscilloscope and computer are following: I. Connect one end of a GPIB cable to the computer. II. Connect the other end of the GPIB cable to the GPIB port on the Oscilloscope. III. Turn on the oscilloscope. IV. Turn on the computer. The GPIB interface capabilities: The GPIB interface of the oscilloscope corresponds to the standard of IEEE488.1- 1987, IEEE488.2-1992 and SCPI-1994. The GPIB interface functions are listed as follows: SH1 (Source Handshake): AH1 (Acceptor Handshake): T6 (Talker): L4 (Listener): The oscilloscope can transmit multilane messages across the GPIB. The oscilloscope can receive multilane messages across the GPIB. Talker interface function includes basic talker, serial poll, and un-address if MLA capabilities, without talk only mode function. listener when the The oscilloscope becomes a controller sends its listen address with the ATN (attention) line asserted. The oscilloscope does not have listen only capability. 5

GDS-806/810/820/840 Programming Manual SR0 (Service Request): The oscilloscope has no SRQ (Service request) function. RL2 (Remote/Local): PP0 (Parallel Poll): DC1 (Device Clear): DT0 (Device Trigger): The oscilloscope will ignore the LLO (local lockout) command. The oscilloscope has no Parallel Poll function. interface The oscilloscope has Device clear capability to return the device to power on status. The oscilloscope has no Device Trigger interface function. C0 (Controller) : This oscilloscope can not control other devices. The GPIB address setting To change the GPIB address, please use the following steps: Press the UTILITY button on the front panel. The utility menu provides Interface Menu sub menu by pressing F2 softkey which GPIB sub menu is included. Press F1 softkey to select GPIB setting menu. For GPIB sub menu Type GPIB: Select GPIB port. Addr 1~30: select the appropriate address for GPIB. Previous Menu: back to previous menu. 6

GDS-806/810/820/840 Programming Manual The GPIB connection testing If you want to test the GPIB connection is whether working or not, use the National Instrument’s “Interactive Control utility” for instance, you communicate with the GPIB devices through calls you interactively type in at the keyboard. The Interactive Control can help you to learn about the instrument and to troubleshoot problems by displaying the following information on your screen after you enter a command: Results of the status word (ibsta) in hexadecimal notation Mnemonic constant of each bit set in ibsta Mnemonic value of the error variable (iberr) if an error exists (the ERR bit is set in ibsta) Count value for each read, write, or command function Data received from your instrument You can access online help in Interactive Control by entering help at the prompt, or you can get help on a specific function by entering help at the prompt, where is the name of the function for which you want help. Interactive Control within National To start Automation Explorer”, complete the following steps: Instrument’s “Measurement & 1. Select Tools→I-488.2 Utilities→Interactive Control. 2. Open either a board handle or device handle to use for further NI-488.2 calls. Use ibdev to open a device handle, ibfind to open a board handle, or the set 488.2 command to switch to a 488.2 prompt. 7

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固纬gds-800系列示波器pc连接程序的详细使用.pdf

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