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Martel M2000 Operator's Manual

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M2000
Operator's Manual

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  • Page 1 M2000 Operator’s Manual...

  • Page 2: Table Of Contents

    Table of Contents INTRODUCTION ......... .3 STANDARD EQUIPMENT .

  • Page 3: Introduction

    INTRODUCTION The Martel series M2000 calibrator is designed to be an accurate DC calibrator for R & D, manufacturing and calibration lab applications. The units simple design and ease of opera- tion allows users to quickly familiarize themselves with its operations and features. Time sav- ing functions like the ability to save, recall and automatically cycle through setpoints for each output range and a complete remote interface are several key features the M2000 offers.
  • Page 4 Primary Function Keys VOLTS/mA Toggles through the Voltage and mA output ranges. STBY/OPR Toggles between standby and operate modes. The “second function” key allows the use of the features described by the second function keys. The “clear entry” will clear the display if a mistake is made during data entry.
  • Page 5 (2) user replaceable fuses. On/Off Rocker Switch This is the main power switch for the M2000. It is a double pole designed for safety. AC Power Inlet This is a standard IEC universal AC input power connector for worldwide line cord usage.

  • Page 6: Getting Started

    AC power cord to the M2000. (See figure 2, item #3 for reference). 4. Turn on the M2000 using the rear panel mounted rocker switch. The M2000 should power up within a few seconds. For good stability it is best to leave the M2000 on all the time.

  • Page 7: Current Output

    M2000 into standby mode. See Figure 4. 3. The M2000 has a typical voltage compliance of 10V so that 4-20mA application loads up to 500 ohms can be driven. At maximum current (100mA) the maximum load is 100 ohms.

  • Page 8: Setpoints

    IX. SETPOINTS The M2000 offers functionality which allows the user to store and recall output levels (set- points). Additional functionality allows the user to automatically step through a number of set- points at a configurable interval. Up to 9 setpoints can be programmed for each range.
  • Page 9 RS232 Remote Control connections Setting up the IEEE-488 Port for Remote Control The M2000 is fully programmable for use on the IEEE Standard 488 interface bus. The IEEE- 488 interface is also designed in compliance with supplemental standard IEEE-488.2, which describes additional IEEE-488 features.
  • Page 10 Changing Between Remote and Local Operation In addition to Local mode (front panel operation) and remote, the M2000 can be placed in a local lockout condition at any time by command of the controller. Combined, the local, remote, and lockout conditions yield four possible operating states described as follows.
  • Page 11 All commands and units may be entered in UPPER or lower case. Types of Commands The commands for the M2000 can be grouped into one or more categories, depending on how they function. Each category is described below. Device-Dependent Commands Device-dependent commands are unique to the M2000.
  • Page 12 OUT 1 V OPER where the M2000 sources 1 V dc, and then goes into operate, or they could be combined into a compound command, OUT 1 V ; OPER using a semi-colon as a separator.
  • Page 13 except for the commands LOCAL, REMOTE, and LOCKOUT, which are implemented per IEEE Standards as messages. Command Syntax The following syntax rules apply to all the remote commands. Information about syntax of response messages is also given. Parameter Syntax Rules Table 6 lists the units accepted in command parameters and used in responses.
  • Page 14 IEEE-488 Interface The M2000 sends the ASCII character Carriage Return with the EOI control line held high as the terminator for response messages. The M2000 recognizes the following as terminators when encountered in incoming data: • ASCII CR character • Any ASCII character sent with the EOI control line asserted RS-232 Interface The M2000 returns a Carriage Return (CR) character with each response.
  • Page 15 Checking M2000 Status You have access to status registers, enable registers, and queues in the M2000 to indicate various conditions in the instrument as shown in Figure 7. Some registers and queues are defined by the IEEE-488.2 standard. The rest are specific to the Calibrator. In addition to the status registers, the Service Request (SRQ) control line, and a 16-element buffer called the Error Queue provide status information.
  • Page 16 Controller normally does a serial poll of each instrument. The calibrator asserts SRQ whenev- er the RQS bit in its Serial Poll Status Byte is 1. This bit informs the controller that the M2000 was the source of the SRQ.
  • Page 17 The controller reads it with a statement such as a BASIC INPUT statement, removing what it reads from the queue. If the queue is empty, the M2000 does not respond to the INPUT state- ment from the controller. The Message Available (MAV) bit in the Serial Poll Status Byte is 1 if there is something in the output queue and 0 if the output queue is empty.
  • Page 18 Input Buffer Operation As the M2000 receives each data byte from the controller, it places the bytes in a portion of memory called the input buffer. The input buffer holds up to 250 data bytes and operates in a first in, first out fashion.

  • Page 19: Remote Commands

    Returns the output amplitude of the M2000. RANGE? Returns the present output range. (Voltage only). RANGELCK Locks the present output range (Voltage only). RANGELCK? Returns the RANGELOCK state (Voltage only). STBY Deactivates the M2000 output if it is in Operate mode.
  • Page 20 Puts the M2000 into the remote state. This command duplicates the IEEE-488 REN (Remote Enable) message. Status Commands Command Description FAULT? Returns the most recent error code in the M2000 error queue, then removes that error code from the queue. Error Code Listing Error Message Number Class Description Error queue overflow.
  • Page 21 Responses: (Indefinite ASCII) A message containing four fields separated by commas as fol- lows: 1. Manufacturer 2. Model number 3. Serial number (always 0) 4. Firmware revision levels for the main, front panel, and inguard CPUs. Example: *IDN? returns MARTEL, M2000,0,1.2 Returns Martel manufacturer, model M2000, serial number 0, firmware version 1.2.
  • Page 22 Returns 1 when all pending operations are complete. OPER IEEE-488 RS-232 Sequential Overlapped (Operate command) Activates the M2000 output if it is in standby. This is the same as press- STBY ing the M2000 front panel key. Parameter: (None) Example: OPER Connect the selected output to the M2000 front panel terminals.
  • Page 23 OUT? IEEE-488 RS-232 Sequential Overlapped (Output query) Returns the output amplitude of the M2000. Multipliers (e.g., K or M) are not used in the response. Response: <amplitude value>,<units> Examples: OUT? returns -1.520000E+01,V OUT? returns 1.88300E-02,A...
  • Page 24 Returns 96 if bits 5 (ESR) and 6 (MSS) are set. STBY IEEE-488 RS-232 Sequential Overlapped (Standby command) Deactivates the M2000 output if it is in operate. This is the same as pressing the M2000 front panel A key. Parameter: (None) Example: STBY...
  • Page 25 For example, if you send an OUT com- mand, you can cause the M2000 to wait until the output has settled before continuing on to the next command if you follow OUT with a *WAI command. The *WAI command is useful with any overlapped command, preventing the M2000 from processing other commands until the overlapped command is processed.

  • Page 26: Specifications General Specifications

    XVI. SPECIFICATIONS General Specifications Warm up time Twice the time since last warmed up, to a maximum of 30 minutes. Settling time Less than 5 seconds for all functions and ranges except as noted. Standard interface RS-232 Optional interface IEEE-488 (GPIB) Temperature performance Operating 0 °C to 50 °C...

  • Page 27: Dc Current, Output

    DC Current Specifications, Output Absolute Uncertainty, tcal ±5 °C ± (ppm of output +µA) Maximum Maximum Compliance Inductive Ranges 90 days 1 year Resolution Voltage Load 1 µA 0 to 100.000 mA 10 V 100 mH 1. All outputs are positive only. Noise Bandwidth Bandwidth...
  • Page 28 Fax: (603) 434-1653 Tel: (603) 434-1433 800-821-0023 Martel Electronics PO Box 770 Londonderry, NH 03053 0219051 Rev C 9/03...

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