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Racal Instruments 1257 Manual

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  • Page 1 (217) 352-9330 | Click HERE Find the Astronics / EADS / Racal 1257-S-1916 at our website:...
  • Page 2 RACAL INSTRUMENTS 1257 SWITCHING SYSTEM PUBLICATION NO. 980862 EADS North America Defense Test and Services, Inc. 4 Goodyear, Irvine, CA 92618 Tel: (800) 722-2528, (949) 859-8999; Fax: (949) 859-7139 info@eads-nadefense.com sales@eads-nadefense.com helpdesk@eads-nadefense.com http://www.eads-nadefense.com PUBLICATION DATE: August 10, 2004 Copyright 2001 by EADS North America Defense Test and Services, Inc. Printed in the United States of America. All...
  • Page 3 THANK YOU FOR PURCHASING THIS EADS NORTH AMERICA DEFENSE TEST AND SERVICES PRODUCT For this product, or any other EADS North America Defense Test and Services, Inc. product that incorporates software drivers, you may access our web site to verify and/or download the latest driver versions. The web address for driver downloads is: http://www.eads-nadefense.com/downloads If you have any questions about software driver downloads or our privacy policy, please contact us at:...
  • Page 4 RETURN of PRODUCT Authorization is required from EADS North America Defense Test and Services, Inc. before you send us your product for service or calibration. Call or contact the Customer Support Department at 1-800-722-3262 or 1- 949-859-8999 or via fax at 1-949-859-7139. We can be reached at: helpdesk@eads-nadefense.com. PROPRIETARY NOTICE This document and the technical data herein disclosed, are proprietary to EADS North America Defense Test and Services, Inc., and shall not, without express written permission of EADS North America Defense Test...
  • Page 5 FOR YOUR SAFETY Before undertaking any troubleshooting, maintenance or exploratory procedure, read carefully the WARNINGS and CAUTION notices. This equipment contains voltage hazardous to human life and safety, and is capable of inflicting personal injury. If this instrument is to be powered from the AC line (mains) through an autotransformer, ensure the common connector is connected to the neutral (earth pole) of the power supply.
  • Page 7 This page was left intentionally blank.

  • Page 8: Table Of Contents

    ..........................1-1 INTRODUCTION ..........................1-1 Overview ............................1-1 Features............................1-2 Ease Of Use..........................1-2 Front and Rear Panels ......................1-3 Powerful Software .........................1-6 Items Shipped with the 1257 ......................1-8 Chapter 2 ..........................2-1 GETTING STARTED ........................2-1 Mounting Options .........................2-1 Main AC Power ..........................2-1 Installing the Drawer........................2-3 Connecting to the Drawer ......................2-3 Activating Main AC Power......................2-4...
  • Page 9 1257 User Manual Chapter 3 ..........................3-1 USING THE FRONT PANEL CONTROLS ..................3-1 Introduction ..........................3-1 Front Panel...........................3-2 Understanding the Hierarchical Menu ..................3-2 The Five Menus ........................3-6 Operations Menu........................3-7 Path Control Menu ........................3-9 Closing a Path .........................3-10 Settings Menu ........................3-13 Store/Recall Menu.......................3-20 System Menu ........................3-23...
  • Page 10 1257 User Manual GPIB Cabling Guidelines ....................4-10 Connecting the GPIB Cables ....................4-11 Selecting the GPIB Interface....................4-11 Setting the GPIB Address ....................4-12 Service Request (SRQ).......................4-13 Using the RS-232 Interface ....................4-14 Basic RS-232 Information ....................4-14 Equipment Required ......................4-14 DTE Versus DCE......................4-14 Connecting to a Computer or Data Terminal ..............4-14 Connecting to a Modem ......................4-15...
  • Page 11 1257 User Manual IEEE-STD-488.2 Common Commands ................5-6 IEEE 488.2 Common Commands ..................5-6 IEEE-488. 2 Status Description.....................5-7 Standard EVENT STATUS Register ..................5-9 STATUS BYTE Register .....................5-11 SERVICE Register ENABLE Register ................5-13 *CLS Command.......................5-13 *ESE Command ......................5-14 *ESE? Query ........................5-15 *ESR? Query ........................5-15 *SRE Command ......................5-15...
  • Page 12 1257 User Manual Boolean Parameters......................5-24 Command Input Buffer ......................5-24 Reply Output Buffer......................5-26 Specifying Channels in Commands..................5-27 Naming The Drawer........................5-28 Defining Drawer Names ......................5-28 Removing Drawer Names ....................5-29 Reading the Presently Defined Drawer Names ..............5-30 Reading the Module Address for a Drawer Name ..............5-30 Storing the Drawer Names in Non-Volatile Memory............5-31...
  • Page 13 Selecting the Trigger Count ....................7-8 Selecting a Trigger Delay......................7-8 Arming and Disarming the 1257....................7-9 Generating a Single Trigger ....................7-10 Output Trigger Signals from the 1257 ................7-11 Selecting an Output Trigger Destination................7-11 Using Scan Lists and External Trigger Input ................7-12 Scan Lists ..........................7-12 Defining a Scan List ......................7-14...
  • Page 14 Mechanical ..........................A-3 Appendix B ......................... B-1 RACK MOUNTING ........................B-1 Items Included ..........................B-1 Installing the 1257 Using Slides and Mounting Brackets ............B-1 Installing the 1257 into a Rack without Slides ................B-3 Appendix C ........................C-1 TROUBLESHOOTING........................C-1 How to Use this Section ......................
  • Page 15 1257 User Manual RS-232 Remote Interface......................C-3 IEEE-488 (GPIB) Remote Interface .................... C-5 Drawers ............................C-5 Non-Volatile Memory........................C-6 Index ............................1 viii...
  • Page 16 Figure 4-1, Connecting the Ethernet Interface.................4-3 Figure 4-2, Using the GPIB Interface.....................4-11 Figure 4-3, Using the RS-232 Interface ..................4-15 Figure 4-4a, Using the 1257 with a Computer ................4-16 Figure 4-4b, Using the 1257 with a Modem ...................4-16 Figure 4-5, HyperTerminal Connection Dialog Box ...............4-25 Figure 4-6, Phone Number Dialog Box ..................4-25...
  • Page 17 Figure 4-11, ASCII Setup Dialog Box ....................4-29 Figure 5-1, IEEE-488.2 Status Reporting Model................5-8 Figure 7-1, State Transition Diagram For Arming and Triggering the 1257........7-10 Figure 7-2, Using External Trigger In and External Trigger Out ............7-12 Figure B-1, Installing the Slide Kit....................B-2 Figure B-2, Rack Mounting ......................

  • Page 18: Chapter 1

    1257 User Manual Chapter 1 INTRODUCTION The 1257 Switching System is a high-performance switching and Overview control system in a compact 4U, 5U, or 6U rack-mountable package. The 1257 is designed to accept removable microwave optical switching drawers customized particular applications.

  • Page 19: Features

    The 1257 Switching System has many design features to make it Ease Of Use easy and convenient to use: • Fast Setup. There are no configuration jumpers or switches to be set. The 1257 is ready to use as soon as the custom drawer has been inserted. • Flexible Controller Interface.

  • Page 20: Front And Rear Panels

    Figure 1-4 gives the physical dimensions of the 1257 chassis in this configuration. The 1257 is also available in a configuration where the system is reverse rack-mounted, shown in Figure 1-6, and a separate 2U high remote unit shown in Figure 1-5.

  • Page 21: Figure 1-4, Dimensions

    1257 User Manual Figure 1-4, Dimensions Introduction 1-4 EADS North America Defense Test and Services, Inc. © 2001...

  • Page 22: Figure 1-5, 2U High Remote Unit

    1257 User Manual Figure 1-5, 2U High Remote Unit AC Input and I/O Connector on Rear Figure 1-6, Reverse Rack-Mounted EADS North America Defense Introduction 1-5 Test and Services, Inc. © 2001...

  • Page 23: Powerful Software

    1257 User Manual Figure 1-7, 5U Front Panel Display Figure 1-8, 6U Front Panel Display The 1257 provides extensive software capabilities, including: Powerful Software • Exclude Lists. Allows you to prevent simultaneous closure of switches in a specified exclude group. The switches are then mutually exclusive.
  • Page 24 • Non-Volatile Memory. Stores recalls switch configurations and 1257 user preferences (such as GPIB address and RS-232 baud rate). • Power-Up Recall. Automatically recalls a complete switching system configuration from non-volatile memory at power-up. •...

  • Page 25: Items Shipped With The 1257

    1257 User Manual The following items are shipped with each 1257 Switching System: Items Shipped with the 1257 ITEM RACAL PART QUANTITY NUMBER 1257 4U Chassis Assembly 407796-001 Optional 1257 5U Chassis Assy 407796-002 Optional 1257 6U Chassis Assy 407796-003...

  • Page 26: Chapter 2

    1257 User Manual Chapter 2 Getting Started You may use the 1257 Switching System on a table or mount it in Mounting Options a standard NEMA 19” rack. See Appendix B, RACK MOUNTING the 1257 for instructions on placing the 1257 in a rack.
  • Page 27 Blue Ground (Earth) Green Green/Yellow CAUTION: Position the 1257 to allow easy access to the power switch on the rear-panel. CAUTION: Using this equipment in a manner not specified in this manual may impair the protection it normally provides. Getting Started 2-2 EADS North America Defense Test and Services, Inc.

  • Page 28: Installing The Drawer

    1257 backplane. When the drawer is fully seated, it is flush with the rear panel of the 1257 chassis. Figure 2-2, Inserting a Drawer...

  • Page 29: Activating Main Ac Power

    1257 User Manual You are now ready to apply power to the 1257 Switching System. Activating Main See Figure 2-3, Activating Main AC Power for instructions on AC Power activating main power. To apply power, simply press the ON/OFF button...

  • Page 30: Verifying The Installed Drawer

    1257 User Manual The front-panel controls provide a way to verify whether a drawer Verifying the is plugged-in and detected by the 1257. For example, suppose the Installed Drawer following drawer is installed: 1260-CDS You may verify the installation of these drawer as follows: Press the top key on the keypad next to the display (see Figure 1-2).

  • Page 31: Opening A Relay

    Then press the fourth key to confirm the opening of the relay. Pressing any other key cancels the change. If you have difficulties using the 1257 Switching System, refer to In Case of Appendix C, TROUBLESHOOTING to resolve the problem. If the...

  • Page 32: Switching And Heat Dissipation

    If it was possible to actuate all poles simultaneously, the drawer would be dissipating 840 W! Not only does this clearly exceed the power supply capabilities of the 1257, but this would result in a large amount of heat dissipation inside the 1257 enclosure.
  • Page 33 1257 User Manual This page was left intentionally blank. Getting Started 2-8 EADS North America Defense Test and Services, Inc. © 2001...

  • Page 34: Chapter 3

    USING THE FRONT PANEL CONTROLS The front-panel controls allow you to use the main features of the Introduction 1257 without the use of a remote interface such as IEEE-488 (GPIB) or RS-232. This may be useful during initial setup or when troubleshooting a system.

  • Page 35: Front Panel

    1. After the user selects from the choices on line 2, the 1257 shows related parameters on line 3. Once the user chooses a parameter from line 3, the 1257 displays the current status, or value, of this parameter on line 4.
  • Page 36 1257 User Manual Press the top keypad switch. This selects line 1 (top line) of the display, as follows: >-----SETTINGS-----< Type: Remote Option: Source Status: GPIB NOTE: The selection markers “>” and “<” identifies the display line that is currently selected.
  • Page 37 Channel: 100 < Status: Open Line 2 indicates that the 1257 contains a 1260-CDS drawer. Line 3 displays the selected channel in this drawer. Rotate the knob to the right. As the knob rotates, the channel number displayed on line 3 increments. Stop when...
  • Page 38 Drawer: 1260 Channel: 102 Set to?: Closed < On the fourth line, the 1257 asks whether to close the channel: Press the fourth keypad switch (for the second time) to confirm that the relay channel should be closed (press any other key to cancel).

  • Page 39: The Five Menus

    1257 User Manual In the above example, the user starts at the top of the menu hierarchy and proceeds downward through the following levels: Level 1: Menu type: OPERATIONS, PATH CONTROL, SETTINGS, STORE / RECALL, SYSTEM (This example used OPERATIONS).

  • Page 40: Operations Menu

    Close or open a channel path on a drawer. Closing a Channel The 1257 front-panel enables the user to manually close and open channels on the drawer. (For connector pin assignments of a drawer, refer to the drawer user manual.) For example, suppose a 1260-CDS drawer is installed.
  • Page 41 1257 User Manual ----OPERATIONS---- Drawer: 1260-CDS >Channel: 100 < Status: Open Rotate the knob until line 3 shows the desired relay channel number, which in this example is 104: ----OPERATIONS---- Drawer: 1260-CDS >Channel: 104 < Status: Open Press the fourth key to select line 4. Rotate the knob until...

  • Page 42: Path Control Menu

    SCPI path delete command. If the intent is to define the pathnames and make them accessible to the front panel after power is cycled to the 1257, the defined pathnames must also be stored in non-volatile memory.

  • Page 43: Closing A Path

    Characters extending beyond this limit are treated with wildcards when the filter mask is applied. Closing a Path The 1257 front-panel enables the user to manually close and open pathnames. For example, suppose four pathnames have been defined using the remote interface for a combination of different relays and plug- in cards –...
  • Page 44 Then press the fourth key to open the relay. Viewing Path States It is easy to view the states of pathnames on a 1257 system from the PATH CONTROL menu: Press the top key next to the display. Rotate the knob until the top line reads: >---PATH CONTROL---<...
  • Page 45 ---PATH CONTROL--- Select Filter Mask >PATH3_____________< Status: Open If no paths exist that meet the filter criteria, the 1257 will display: >---PATH CONTROL---< Select Filter Mask {no paths found} While selecting a mask, pressing the line 1 key or line 4 key will institute other changes.

  • Page 46: Settings Menu

    • Screen saver timeout, in minutes. Selecting the Remote Interface Source The user may control the 1257 remotely by the Ethernet, GPIB, or RS-232 interfaces. To select one of these as the active interface, follow these steps: Press the top key next to the display. Rotate the knob until the top line reads: >-----SETTINGS-----<...
  • Page 47 Local Lockout In some applications, it may be desirable to lock out (disable) the front-panel controls while controlling the 1257 via a remote interface. The 1257 provides two types of local lockout: • Automatic lockout: When the 1257 receives any...
  • Page 48 The user may restore local control only by issuing a KLOCK OFF command. The display then returns to the state that it was in when the 1257 entered lockout mode. Manual control is also restored if the user cycles the power to the 1257.
  • Page 49 1257 User Manual Status: GPIB Select line 3 by pressing the third key. Rotate the knob until line 3 reads as shown below: -----SETTINGS----- Type: Remote > Option: Lockout < Status: Disabled If line 4 already shows the desired status, then no further action is necessary.
  • Page 50 1257 User Manual Setting the Display Format The display may be set to display digital port data in hexadecimal, decimal, or binary format. To set the display format, proceed as follows: Press the top key. Rotate the knob until the top line reads: >-----SETTINGS-----<...
  • Page 51 1257 User Manual 75%, or 100% of its maximum brightness. To set the display intensity, proceed as follows: Press the top key next to the display. Rotate the knob until the top line reads: >-----SETTINGS-----< Select line 2 (next to the top line) by pressing the second key.
  • Page 52 1257 User Manual “Type: Display“: -----SETTINGS----- > Type: Display < Option: Format Status: Hex Press the third key to select line 3 of the display (option): Rotate the knob until line 3 of the display reads as follows: -----SETTINGS----- Type: Display >...

  • Page 53: Store/Recall Menu

    Storing the Switching State The switching state includes the positions (closed or open) of all relays. The 1257 stores the state of the drawer as a single state. When a Using the Front Panel Controls 3-20 EADS North America Defense...
  • Page 54 The 1257 can store up to 100 switching states, or presets, plus an additional state that is restored automatically when the power is turned on.
  • Page 55 1257 User Manual Type: State > Config: Powerup < < Do?: Store Press the fourth key (bottom) to store the power-up state. Pressing any other key cancels the change. NOTE: After storing the power-up state, the non-volatile image must be written to non-volatile RAM. Refer to the section Updating Non-Volatile RAM for instructions.

  • Page 56: System Menu

    1257 User Manual ---STORE/RECALL--- Type: NVRAM Option: Image < Do?: Update? Press the fourth key (bottom) to store the power-up state. Pressing any other key cancels the change. Erasing Non-Volatile RAM The entire non-volatile RAM may be erased if desired. This erases all presets, including switching states, the power-up switching state, and the menu preferences.

  • Page 57: Complete Menu Listing

    For quick reference, this section lists the complete menu hierarchy Complete Menu for the 1257 Switching System. Menu items are indented according Listing to their levels of hierarchy. For example: LEVEL 1 (top line of display)
  • Page 58 1257 User Manual 4,800 9,600 19,200 38,400 57,600 115,200 Data Bits Parity None Even Stop Bits Flow Control Disabled XON/XOFF RTS/CTS EOL Mode LF Only CR/LF CR Only GPIB Address PwrOnSRQ Enabled Disabled TCP/IP Addr_mode Auto_DHCP Man_Use Man_Set IP_Oct_1 IP_Oct_2...
  • Page 59 1257 User Manual GW_Oct_1 GW_Oct_2 GW_Oct_3 GW_Oct_4 NM_Oct_1 NM_Oct_2 NM_Oct_3 NM_Oct_4 Display Format Binary Decimal Intensity 100% Screen Saver Enabled Disabled Timeout 1 min 5 mins 10 mins Using the Front Panel Controls 3-26 EADS North America Defense Test and Services, Inc. © 2001...
  • Page 60 Image Erase All Update Menu Defaults Recall Power Up Store Recall SYSTEM Firmware Revisions Boot Flash Device ID Number {Unique 8-digit 1257 ID number} EADS North America Defense Using the Front Panel Controls 3-27 Test and Services, Inc. © 2001...
  • Page 61 1257 User Manual This page was left intentionally blank. Using the Front Panel Controls 3-28 EADS North America Defense Test and Services, Inc. © 2001...

  • Page 62: Chapter 4

    Programmable Instruments (SCPI), a universal programming language for test and measurement instruments. Chapter 5, SCPI COMMAND BASICS introduces SCPI and discusses the commands most frequently used with the 1257. For a discussion of all commands that may be used via the 1257 remote interfaces, Chapter...

  • Page 63: Using The Ethernet Interface

    Ethernet Cabling pair wires terminated by a standard RJ-45 modular plug at each Guidelines end. To connect the 1257 to an Ethernet hub, use a CAT-5 cable that is constructed in a “straight-through” configuration: Connector 1 Connector 2 Pin 1 (TX+)

  • Page 64: Connecting The Ethernet Cables

    • Avoid sharp bends or kinks in the cable. • If the main network used to connect the 1257 or other Ethernet-enabled test equipment is highly congested, consider isolating the test system computers and Ethernet-enabled test equipment into sub-networks. This can be accomplished by using a network switch as opposed to an ordinary hub.

  • Page 65: Entering The Ethernet Communication Settings

    Following this procedure will put the settings into non-volatile memory and allow them to be restored during instrument power-up. When connecting the 1257 to an Ethernet network, you must Entering the assign it a unique TCP/IP address, a gateway, and a subnet mask.
  • Page 66 Type: TCP/IP Option: Addr_Mode <Update?: Auto_DHCP Then press key 4 again to select the DHCP mode. The 1257 is now ready for TCP/IP communications. 5. It is possible to see when the 1257 successfully negotiates an address with a DHCP server. Normally after applying power to a 1257 the octet fields for the IP address, gateway address, and netmask have values of zero.
  • Page 67 In Manual Mode, the user decides what static IP address, gateway, and sub-net mask to use, and enters them manually. The first step is to put the 1257 into Manual Set mode, to allow setting of the TCP/IP parameters. Before attempting to use static or manual addressing on a 1257, several important things must be kept in mind: •...
  • Page 68 Type: TCP/IP > Option: IP_Oct_1 < Status: 0 This prepares the 1257 to set the first octet (eight bits) of the IP address. 2. Select line 4. Rotate the knob until line 4 (the Status line) displays the first octet of your desired IP address. For example, if you wish to set the IP address to “197.23.0.123”, rotate the...
  • Page 69 Type: TCP/IP > Option: GW_Oct_1 < Status: 0 This prepares the 1257 to set the first octet (eight bits) of the gateway. 2. Select line 4 and rotate the knob until line 4 displays the first octet of your desired gateway. Then press key 4 again to confirm.
  • Page 70 1257 User Manual > Option: NM_Oct_1 < Status: 0 This prepares the 1257 to set the first octet (eight bits) of the sub-net mask. 2. Select line 4 and rotate the knob until line 4 displays the first octet of your desired sub-net mask. Then press key 4 again to confirm.

  • Page 71: Using The Ieee-488 (Gpib) Interface

    P/N 500310-001 • GPIB Cable, 2 meters (6.56 ft.) P/N 500310-002 To use the IEEE-488 (GPIB) interface with the 1257 Switching System, you also need a computer equipped with a GPIB controller. Adhere to the following guidelines to maximize the data transfer...

  • Page 72: Connecting The Gpib Cables

    1257 User Manual Use a GPIB cable to connect the rear-panel GPIB connector on Connecting the the 1257 to the GPIB port of the host computer. Refer to Figure 4- GPIB Cables 2, Using the GPIB Interface. CAUTION: Avoid stacking more than three cables on any single connector.

  • Page 73: Setting The Gpib Address

    The 1257, as a GPIB bus member, must be assigned a unique Setting the GPIB address. This address can be set only by means of the front-panel Address controls.

  • Page 74: Service Request (Srq)

    Following this procedure will put the settings into non-volatile memory and allow them to be restored during instrument power-up. The 1257 may generate a service request (SRQ) in response to a Service Request variety of events. These events include detecting a programming...

  • Page 75: Equipment Required

    1, 2, 3, ... at one end connect to pins 1, 2, 3, ... , respectively, at the other end. The 1257 is designed as DCE to facilitate direct connection to a computer or data terminal (DTE). Connecting to a modem requires a “null modem”, described in the section Connecting to a Modem.

  • Page 76: Connecting To A Modem

    Connector RS-232 Cable RS-232 Connector Figure 4-3, Using the RS-232 Interface If you wish to connect the 1257 directly to a modem instead of a Connecting to a computer or data terminal, the connection will be DCE-to-DCE. A Modem DCE-to-DCE connection requires a special serial cable, known as a null-modem.

  • Page 77: Figure 4-4A, Using The 1257 With A Computer

    PIN 3 (TXD) PIN 7 (RTS) PIN 7 (RTS) PIN 8 (CTS) PIN 8 (CTS) PIN 5 (SIGNAL GND) PIN 5 (SIGNAL GND) Figure 4-4a, Using the 1257 with a Computer 9-PIN D-SUB 9-PIN D-SUB CONNECTOR CONNECTOR (MALE) (MALE) SPECIAL NINE-PIN RS-232 CABLE...
  • Page 78 1257 User Manual To use the RS-232 interface with the 1257, the RS-232 interface Selecting the RS- must be selected via the front-panel controls, as follows: 232 Interface 1. Press the top key. Rotate the knob until the top line reads: >-----SETTINGS-----<...

  • Page 79: Setting The Flow Control Option

    Flow control is a means by which the data terminal (or host computer acting as a terminal) may pace the flow of data coming from the 1257 so that the terminal has time to properly receive the data. It also allows the 1257 to pace commands coming from the terminal so that the 1257 has sufficient time to execute the commands as they arrive.
  • Page 80 1257 User Manual -----SETTINGS----- > Type: Display < Option: Format Status: Decimal 3. Rotate the knob until line 2 reads as shown below (lines 3 and 4 may differ): -----SETTINGS----- > Type: RS-232 < Option: Baud Rate Status: 9600 4. Press the third key to select line 3 of the display. Rotate the knob until line 3 indicates the “Flow Control”...

  • Page 81: Setting The Baud Rate

    Set the RS-232 port of your data terminal or computer to operate at the same baud rate as the 1257. Refer to the user’s manual for your terminal for instructions on making these settings. If you are using a computer with terminal emulation, refer to the user’s...

  • Page 82: Setting The Message Termination Characters

    Each message to or from the 1257 must end with an end-of-line Setting the Message (EOL) character known as a terminator. You may select the EOL...

  • Page 83: Setting The Data Bits, Stop Bits, And Parity

    When using a data terminal, or a computer with terminal-emulation software, it is recommended that you set the 1257 to use the CR-only terminator. In this case, also set the data terminal or computer to half-duplex operation (local echo), with line feed appended to incoming messages (see your data terminal manual for information on how to do this).
  • Page 84 1257 User Manual To set these parameters, proceed as follows: 1. Press the top key. Rotate the knob until the top line reads: >-----SETTINGS-----< 2. Select line 2 (next to top line) by pressing the second key. This selects line 2 so that you may select the type of setting to work...

  • Page 85: Using Microsoft Hyperterminal

    Following this procedure will put the settings into non-volatile memory and allow them to be restored during instrument power-up. One of the easiest ways to manually control the 1257 through the Using Microsoft RS-232 interface is to use HyperTerminal. HyperTerminal is a...

  • Page 86: Figure 4-5, Hyperterminal Connection Dialog Box

    1257 User Manual Figure 4-5, HyperTerminal Connection Dialog Box Enter a name, such as “1257”, for the new connection. Then click on OK. HyperTerminal then displays the Phone Number dialog box as shown in Figure 4-6 (your screen may differ slightly).

  • Page 87: Figure 4-7, Com Properties Dialog Box

    Figure 4-7. Figure 4-7, COM Properties Dialog Box Set the baud rate to match the 1257 baud rate. Set the port for 8 data bits, no parity, one stop bit, and no flow control, as shown in Figure 4-7.

  • Page 88: Figure 4-8, Main Communications Screen

    1257 User Manual Figure 4-8, Main Communications Screen Click on the File menu, then on Properties, to display the Properties dialog box shown in Figure 4-9 (your screen may differ slightly). EADS North America Defense Computer Interfaces 4-27 Test and Services, Inc. © 2001...

  • Page 89: Figure 4-9, Properties Dialog Box

    1257 User Manual Figure 4-9, Properties Dialog Box Click on the Settings tab. The Settings dialog box then appears as shown in Figure 4-10 (your screen may differ slightly). Figure 4-10, Settings Dialog Box Computer Interfaces 4-28 EADS North America Defense...

  • Page 90: Figure 4-11, Ascii Setup Dialog Box

    Figure 4-8. To finalize the connection, click on the Call menu, then click on Connect. To test the communications between the computer and the 1257, type the following command: *IDN? Then press Enter. The 1257 should respond with: Racal Instruments 1257 Switch System, 03.10...
  • Page 91 1257 User Manual NOTE: The version of HyperTerminal that is shipped with Microsoft Windows may not echo characters to the screen properly. An updated version is available from Hilgraeve, Inc. at: http://www.hilgraeve.com The new version is called HyperTerminal Private Edition.

  • Page 92: Chapter 5

    1257 User Manual Chapter 5 SCPI COMMAND BASICS The 1257 accepts commands via either the GPIB or serial SCPI Command interface. 1257 commands follow the rules defined by the SCPI Overview standard. SCPI is an acronym for “Standard Commands For Programmable Instruments”, and defines standard command...
  • Page 93 1257 User Manual To illustrate the SCPI notation, a part of the ROUTE command subsystem is shown below: [:ROUTe] :CLOSe <channel list> :OPEN <channel list> :ALL ROUTE is the root keyword of the command. This keyword is optional, since it is shown enclosed in square brackets. CLOSE and OPEN are the next level keywords.

  • Page 94: Command Keyword Long Form And Short Form

    1257 User Manual Each keyword defined by SCPI has both a long form and a short Command form. The long form is formed by using all letters shown in the Keyword Long keyword. The short form is formed by using only those letters shown in upper-case in the command tree.

  • Page 95: Optional Keywords

    ROUTE:CLOSE (@1(0)) Has an equivalent query: ROUTE:CLOSE? (@1(0)) The command instructs the 1257 to close channel 0 in the drawer. The query inquires about the present open or close state of channel 0 in the drawer. SCPI command termination depends on whether the GPIB or RS- SCPI Command 232 serial interface is used.
  • Page 96 For further details on front-panel usage refer to Chapter 3: USING THE FRONT PANEL CONTROLS. The 1257 has the ability to interface with terminals and terminal emulation software. Unfortunately, a wide variation of capabilities exists in terminals/terminal emulators. Most terminals/terminal emulators generally treat the “ENTER”...

  • Page 97: Ieee-Std-488.2 Common Commands

    *RST; *STB?; *IDN? The IEEE-488. 2 common commands implemented by the 1257 are described later in this chapter. The 1257 complies with this standard for both GPIB and RS-232 operational modes. The 1257 supports all required IEEE-488.2 commands. In addition, IEEE 488.2 Common...

  • Page 98: Ieee-488. 2 Status Description

    While the GPIB operational mode of the 1257 is fully compliant with this standard, it is impossible for the 1257, or any instrument operating in the RS-232 operational mode for that matter, to satisfy the IEEE status requirements in all respects.

  • Page 99: Figure 5-1, Ieee-488.2 Status Reporting Model

    1257 User Manual Figure 5-1, IEEE-488.2 Status Reporting Model SCPI Command Basics 5-8 EADS North America Defense Test and Services, Inc. © 2001...

  • Page 100: Standard Event Status Register

    This flag is set when the instrument is powered on. User Request Bit 6, Bit weight = 64 decimal = 40 hexadecimal This bit is never set by the 1257 and will always read 0. Command Error Bit 5, Bit weight = 32 decimal = 20 hexadecimal This bit is set when a command error is detected by the 1257.
  • Page 101 1257 User Manual This bit is set when a device-dependent error is detected. For example, a channel in the 1257 drawer is read during power-up but contains an unknown identification byte value. When this error occurs, an error is added to the error message queue.

  • Page 102: Status Byte Register

    1257 User Manual For example, if the PON and QYE bits of the Standard Event Status Register are set, but the Standard Event Status Enable Register value is 0, then the ESB of the Status Byte Register will not be set. If either, or both, bits 7 and bit 2 of the Standard Event Status Enable Register are set, then the ESB bit of the Status Byte Register will be set.
  • Page 103 Bit 4, bit weight = 16 decimal = 10 hexadecimal This bit is set when there is a message in the output buffer of the 1257. All other bits (3, 2, 1, and 0) of the Status Byte are not assigned and will always return 0.

  • Page 104: Service Register Enable Register

    1257 User Manual The Service Request Enable Register is used to individually SERVICE Register enable bits in the Status Byte to set the MSS bit of the Status Byte, ENABLE Register thereby generating an interrupt. When the bit of the Service Request Enable bit is set, and the corresponding bit of the Status Byte Register is set, then the MSS bit will be a 1.

  • Page 105: Ese Command

    1257 User Manual • The Operation Status Event Register is cleared to 0 This register is read using the STATUS:OPERATION:EVENT? query. • The Questionable Status Enable Register is cleared to 0. To set this register, the STATUS:QUESTIONABLE:ENABLE command is issued. To read this register, the query STATUS:QUESTIONABLE:ENABLE? indicates whether this feature is enabled.

  • Page 106: Ese? Query

    1257 User Manual *ESE <ESE value> where the “<ESE value>” is an integer numeric value in the range from 0 through 255. This query reads the value presently programmed for the Standard *ESE? Query Event Status Enable Register. This reads the value as programmed by the “*ESE”...

  • Page 107: Sre? Query

    The *OPC command has no parameters. The only valid syntax for this command is: *OPC The *OPC? query causes the 1257 to reply with the value of “1" *OPC? Query when the query is executed. This query may be used to ensure...

  • Page 108: Idn? Query

    Racal Instruments 1257 Switch System,<revision> This reply indicates the manufacturer of the instrument is EADS North America Defense Test and Services, that it is a 1257 Switch System, and the current firmware revision. The firmware revision is a numeric, floating point value. An example firmware revision is “3.10".

  • Page 109: Tst? Query

    *TST? Query The *TST? query is supported only to be compliant with the IEEE- 488.2 standard. The 1257 performs an extensive self-test at every power-up. If the system detects any failures, the condition is indicated directly on the front-panel display. Normally self-test errors are considered to be fatal conditions and result in a system halt.

  • Page 110: Spe Command

    1257 User Manual State 0 is recalled at power-up. The 1257 is shipped without any data in state 0. This effectively tells the 1257 to open all relays at power-up. This default may be overwritten by placing all relays in the desired power-up state, and then executing the command...

  • Page 111: Trg Command

    NOTE: When bit 7 of the status byte (Service Requested) is set to show that SRQ is asserted, the 1257 will not respond to any GPIB commands until the interrupt has been serviced. Servicing may be done with a serial poll. After the interrupt has been serviced, the error code generated must be obtained via GPIB.
  • Page 112 CLOSE, OPEN, or SCAN operation. This bit is cleared after the settling time has elapsed. All of the other bits of this register are not used by the 1257. These bits will return a value of 0 when read. The Operation Status Enable Register enables individual bits to pass through to the Operation Status Event Register.

  • Page 113: Scpi Parameter Type

    1257 User Manual :STATus :OPERation [:EVENt]? :CONDition? :ENABle :PRESet (Command Only) :QUEStionable [:EVENt]? :CONDition? :ENABle Examples of the commands are shown below. To enable the “Wait for Trigger” and “Wait for Arm” bits the following command achieves this: STAT:OPER:ENABLE 96...

  • Page 114: Discrete Parameters

    7B hex = 123 decimal #H7B 173 octal = 123 decimal #Q173 When an integer value is returned in a reply from the 1257, the value will be a decimal number. Discrete Parameters Discrete parameters are used to program settings that have a limited number of values.

  • Page 115: Boolean Parameters

    Boolean parameters represent a single binary condition that is Boolean Parameters either true or false. The 1257 accepts "OFF" or "0" for a false condition. The 1257 accepts "ON" or "1" for a true condition. The following command uses a boolean parameter:...
  • Page 116 If software flow control is selected, and the input buffer reaches 80% capacity, the 1257 will send an XOFF character to the host. The 80% threshold provides a reasonable safety margin to allow for host software overhead. When the input buffer reaches the 60% capacity threshold, the 1257 will send an XON character to the host to resume data transfer.

  • Page 117: Reply Output Buffer

    1257, and to ensure that relays are in the programmed state, a query may be sent to the 1257. Once the reply to the query is read, you can be sure that the relays are in the programmed state.

  • Page 118: Specifying Channels In Commands

    1257 User Manual To select a single channel in a command, both the fixed address of Specifying the drawer (always "1" in a 1257) which contains the channel, and Channels in the channel number must be specified. The syntax to describe a...

  • Page 119: Naming The Drawer

    1257 User Manual A drawer controlled by a 1257 may be given a name. This name Naming The may be used in place of the address "1" in any command used to Drawer control a relay. The MODULE:DEFINE command (MOD:DEF) may be used to Defining Drawer define a name of a drawer.

  • Page 120: Removing Drawer Names

    1257 User Manual Assigns the name matrix to the drawer: MOD:DEF matrix,1 Closes channel 23 of matrix: CLOSE (@matrix(23)) Close Matrix channels 7 through 12: CLOSE (@matrix(7:12)) The MODULE:DELETE command may be used to delete a drawer Removing Drawer name. The MODULE:DELETE:ALL command may be also used to Names remove all drawer names.

  • Page 121: Reading The Presently Defined Drawer Names

    The reply to this command consists of the presently defined module names, separated by a comma. Module names are stored internally in upper-case characters by the 1257. These upper-case names are returned in the reply. For example, suppose the following commands have been...

  • Page 122: Storing The Drawer Names In Non-Volatile Memory

    1257 User Manual All module names presently defined may be prepared for storage Storing the Drawer in non-volatile memory using the MODULE:SAVE command. The Names in Non- actual process of updating non-volatile memory requires a Volatile Memory separate SYSTEM:NVUPD command. This allows multiple relay...

  • Page 123: Defining Path Names

    1257 User Manual The PATH:DEFINE command may be used to associate a name Defining Path Names with one or more relays. The format for this command is: [:ROUTe] :PATH :DEFine <path name> , <close channel list> , [,<open channel list>] The <path name>...

  • Page 124: Removing Path Names

    1257 User Manual Path names may also be used in defining an “Include List”, an “Exclude List”, or a “Scan List”. The following sections describe each of these concepts. When using path names with the “Include List”, “Exclude List” and “Scan List”, the presently defined path is used.

  • Page 125: Reading The Channel List For A Path Name

    The reply to this command consists of the presently defined path names, each of which is separated by a comma. Path names are stored internally in upper-case characters by the 1257. These upper-case names are returned in the reply. For example, suppose the following commands have been...

  • Page 126: Closing Channels

    1257 User Manual NOTE: The actual process of updating non-volatile memory requires a separate SYSTEM:NVUPD command. This allows multiple relay states, exclude lists, include lists, and module names to be updated in rapid succession, followed by a single, slower update of the actual non-volatile memory.

  • Page 127: Opening Channels

    1257 User Manual The following examples show the replies to the “CLOSE?” queries. Command: CLOSE? (@1(0:34)) Reply: 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 Command: CLOSE? (@1(0))

  • Page 128: Checking For Installed Drawers

    Installed Drawers [ROUTe] :MODule :LIST? [module address] As an example, if a 1257 contains a 1260-601A drawer and if the following command was executed: MOD:LIST? the reply would be: 1 : 1260-601A SPECIAL MATRIX...

  • Page 129: Scpi Version Information

    1257 User Manual The error queue holds up to 15 error messages. Each time an error is detected by the 1257, it adds a new error to the error queue. Each time the SYSTEM:ERROR? query is received, the oldest (least recent) error message is returned.

  • Page 130: User-Interface Lockout

    1257 be prohibited through the front panel user- interface. For example, the command: SYST:KLOCK ON will cause the 1257 to display a remote operation screen on the display with a message indicating that local mode is in a lockout condition. The command:...

  • Page 131: Non-Volatile Update

    To minimize the effects of the flash memory update cycle, the 1257 allows individual selections (i.e. include list, exclude lists, path names, menu selections, etc) to be instantaneously saved into intermediate volatile memory.
  • Page 132 1257 User Manual will cause the 1257 to start the transfer process. The command: SYST:NVUPD? will return: ACTIVE during the update process and: IDLE at any other time or after the update process has completed. Attempting to change intermediate memory during a flash update cycle is prohibited.
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  • Page 134: Scpi Command Reference

    This section contains a detailed description of each command that General is either specific to the 1257 or common to multiple switch modules. The commands are presented in Table 6-1. The commands accepted by the 1257 are shown using the SCPI syntax notation.
  • Page 135 ROUTE:CLOSE? and ROUTE:OPEN? are valid commands. Table 6-1 contains a synopsis of the commands implemented by the 1257. The maximum and minimum values and resolution are shown for numeric parameters. The commands marked with an asterisk (*) are NOT defined in the SCPI language. These commands follow the SCPI syntax rules for implementing the operation of the command.

  • Page 136: Table 6-1, Commands Implemented By The 1257

    1257 User Manual Table 6-1, Commands Implemented by the 1257 Command Default See page Notes ROUTE Subsystem: [:ROUTe] 5-2,5-24,5-29 - 5-37,6-1,7- 2,7-5,7-14,7- 14,7-16,7-17 :CLOSe <channel list> 5-2,5-35,6-1 :CLOSe? :OPEN <channel list> 5-2,5-36,6-1 :OPEN? :ALL (Command Only) :SCAN <scan list> 7-14...
  • Page 137 5-22 :CONDition? (Query Only) 5-22 return a value of zero (0). These commands are not :ENABle <enable mask> 5-22 :ENABle? used with the 1257 5-22 TRIGGER (and Related Commands) Subsystem: :TRIGger 7-7,7-8 [:SEQuence] 7-7,7-8,7-10 :COUNt <trigger count> (~ 2 billion) :DELay <trigger delay>...
  • Page 138 *OPC? 5-6,5-16 *TRG (Command Only) 5-7,5-20 *SAV [<state>] (Command Only) 5-7,5-18 *RCL [<state>] (Command Only) 5-7,5-18 *OPT? (Query Only) *WAI 5-20 no function in the 1257 EADS North America Defense SCPI Command Reference 6-5 Test and Services, Inc. © 2001...
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  • Page 140: Advanced Scpi Operations

    MBB (Make Before Break): Causes new channel closures to be made before existing channel closures are opened. For example, the following command: ROUTE:CONFIGURE (@1),MBB causes the drawer installed in the 1257 to operate in Make-Before- Break mode. EADS North America Defense Advanced SCPI Operations 7-1...

  • Page 141: Include Lists

    INCLUDE (@1(5,15)) CLOSE (@1(5)) This first command places two relays on the include list. Channels 5 and 15 of the 1257 drawer are placed in an include list. The second command closes channels 5 AND 15 in the drawer. INCLUDE (@1(12),1(0))
  • Page 142 1257 User Manual The first command defines an include list consisting of channels 0 through 4. The second command removes channel 2 from any include list definitions. After the second command is executed, the include list now consists of channels 0, 1, 3 and 4. These two commands are thus equivalent to a single command INCLUDE (@1(0,1,3,4)).
  • Page 143 1257 User Manual INCL? (@1(8)) returns the reply: (@1(7:10)) Note that the reply maintains the order in which the include group was defined. That is, the reply begins with channel 7, even though the query was sent for channel 8.

  • Page 144: Using Exclude Lists

    1257 User Manual After power-up, and after a “*RST” command has been executed, all INCLUDE lists are deleted. The 1257 provides the capability to define sets of relays which are Using Exclude “mutually exclusive.” This feature is called an “exclude list.” When...
  • Page 145 1257 User Manual The first command establishes an exclude list of channels 0 through 7 and another for channels 8 through 15. The second command closes channel 0. The third command closes channel 8. This command will cause channel 0 to open, since both channels are on the exclude group together.

  • Page 146: Using External Triggering

    These signals connect to the External Trigger In and External Trigger Out connectors on the 1257 rear panel. Refer to Figure 7- 1, Using External Trigger In and External Trigger Out for connector location and signal information.

  • Page 147: Selecting The Trigger Count

    The present trigger count may be queried by using the TRIGGER:COUNT? query. The 1257 may be programmed to delay before acting on a trigger. Selecting a Trigger This provides the ability to slow down the scan list operation if so Delay desired.

  • Page 148: Arming And Disarming The 1257

    TRIG:SOUR BUS INIT:IMMEDIATE are executed, the 1257 will accept up to 3 triggers. After the third trigger, scanning will be disabled since the trigger count value has been reached. At this point, channel 2 will be closed, because it is the third element in the scan list.

  • Page 149: Generating A Single Trigger

    The 1257 may also be manually disarmed with the ABORT command. Figure 7-1, State Transition Diagram For Arming and Triggering the 1257 The 1257 may be armed, and a single trigger may be sent, using Generating a Single the TRIGGER:IMMEDIATE command. The syntax for this...

  • Page 150: Output Trigger Signals From The 1257

    1257 trigger pulse may be placed on the external trigger output found on the rear panel of the 1257. Refer to Figure 7-1: Using External Trigger In and External Trigger Out for connector location and signal information. This trigger pulse may be used to inform other instruments that the relay(s) have settled, and a new measurement may take place.

  • Page 151: Using Scan Lists And External Trigger Input

    This feature is known as a “Scan List”. When a Scan List is used, the user defines a list of channels to operate. Each time a trigger is received by the 1257, the presently closed channel is opened, and the next channel on the list is closed.
  • Page 152 The TRIGGER:SOURCE command is used to select the input trigger. C) Program the 1257 to generate a trigger each time a relay is closed. The output trigger must be enabled, through the OUTPUT:TRIGGER command.

  • Page 153: Defining A Scan List

    CLOSE, OPEN, and PATH commands, but with one addition: special keywords may be used to indicate that all channels controlled by the 1257 are placed in the state as recalled from nonvolatile memory. In short, the <scan list> is comprised of: Individual channel designators.
  • Page 154 “example” are opened, and channel 0 is closed K) After the next trigger, channel 0 is opened, and the state of all channels controlled by the 1257 is recalled from nonvolatile memory. The state of the relays is recalled from state location L) After the next trigger, channel 224 is closed.

  • Page 155: Advance Verification Features

    The 1257 supports an operational mode that performs a high-level Confidence Mode system-wide verification. When Confidence Mode is enabled, the 1257 checks the status of all switches after it closes or opens any of them. The syntax for the command is shown below: [:ROUTe]...

  • Page 156: Using Relay Verification

    Standard Event Status Register and a “1” into the “ESB” mask bit of the Service Request Enable Register. The 1257 system also supports the ability to verify that a switch or Using Relay a range of switches is closed or open.

  • Page 157: Saving/Recalling The Verification Masks

    As was the case earlier, channel 11 is excluded by the mask and will not show up in the error report. In addition, the 1257 will show only the first ten failures it finds when a large number of channels are specified in a query.

  • Page 158: Automatically Recalling Verification Masks At Startup

    :STATE {OFF | ON | 0 | 1} :STATE? When a state of ON or 1 is specified, a special flag is stored inside the 1257 non-volatile memory structure that instructs it to automatically load any stored verification masks each time power is applied to the 1257.
  • Page 159 1257 User Manual NOTE: The actual process of updating non-volatile memory requires a separate SYSTEM:NVUPD command. This allows multiple relay states, exclude lists, include lists, and module names to be updated in rapid succession, followed by a single, slower update of the actual non-volatile memory.

  • Page 160: Product Support

    For worldwide support and the office closest to your facility, refer to the website for the most complete information http://www.eads- nadefense.com. Use the original packing material when returning the 1257 to EADS Warranty North America Defense Test and Services, Inc. for calibration or servicing.
  • Page 161 1257 User Manual REPAIR AND CALIBRATION REQUEST FORM To allow us to better understand your repair requests, we suggest you use the following outline when calling and include a copy with your instrument to be sent to the EADS North America Defense Test and Service, Inc.

  • Page 162: Specifications

    1257 User Manual Appendix A Specifications General Accommodates Single Drawer Drawer Interface Vacuum fluorescent display Front Panel Menu soft keys Optically-encoded knob IEEE-488 (standard GPIB) Rear-Panel Connectors RS-232 (9-pin D-SUB) Trigger in (BNC) Trigger out (BNC) AC power input (IEC)

  • Page 163: Environmental

    Hardware (RTS/CTS) SCPI. Identical to current 1260-Series switch family except for Command Set modifications to triggering functions to accommodate non-VXIbus operation. Drivers and soft front panels for 1257 Drawers. Software Drivers Electrical Switched-mode PWM Power Supply Type 90VAC to 250VAC, auto-ranging, 47-63Hz.

  • Page 164: Emc

    1257 User Manual 95% non-condensing Humidity Altitude Operating: 10,000 feet Storage: 15,000 feet 30g, 11ms, ½ sine wave Shock 0.013 in. (P-P), 5-55Hz Vibration 4-inch drop at 45 Bench Handling EN61326, Class A, Table 1 Immunity EN61326, Class A, Table 3...
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  • Page 166: Rack Mounting

    3. Using the hardware found in the slide mount kit P/N 921657- 026, attach the instrument mounting extension bars to the 1257. Each extension bar requires four fasteners to properly secure the 1257 chassis. EADS North America Defense Rack Mounting B-1 Test and Services, Inc.

  • Page 167: Figure B-1, Installing The Slide Kit

    1257 User Manual 4. Determine the mounting placement of the 1257 chassis in the rack. Once placement has been determined, install the short mounting brackets P/N 921656 on the front of the rack and the long mounting brackets P/N 921656-001 in the rear of the rack with user-provided hardware suitable for the rack used.

  • Page 168: Installing The 1257 Into A Rack Without Slides

    Rack There is no need to open the unit. without Slides 1. Determine the mounting placement of the 1257 in the rack. 2. Install either user-provided right-angle runners or a baseplate to support the weight of the 1257 chassis.
  • Page 169 1257 User Manual This page was left intentionally blank. Rack Mounting B-4 EADS North America Defense Test and Services, Inc. © 2001...

  • Page 170: Troubleshooting

    1257 User Manual Appendix C Troubleshooting If you have difficulty using the 1257 Switching System, refer to How to Use this following troubleshooting tables. If you are still unable to Section resolve the problem, contact the EADS North America Defense Test and Services Customer Support Department (refer to Chapter 8, PRODUCT SUPPORT).

  • Page 171: Front-Panel Controls

    PROBLEM POSSIBLE CAUSES WHAT TO DO • • Display goes blank Power has been Verify that the 1257 AC input is (was working). interrupted. connected to a live mains outlet. • Verify that the 1257 power switch is still in the ON position.

  • Page 172: Rs-232 Remote Interface

    115,200. • • Remote terminal receives Baud rate of 1257 not Set baud rate of 1257 to match unintelligible text from 1257. matched to baud rate of that of the data terminal (see No intelligible text is received terminal.
  • Page 173 • Baud rate too high for cable Change to a lower baud rate. and terminal being used. Make sure that the new 1257 baud rate matches the new terminal baud rate (to set the 1257 baud rate, see Chapter 4, GPIB and RS-232 Interfaces, under the heading Setting the Baud Rate).

  • Page 174: Ieee-488 (Gpib) Remote Interface

    232 Interfaces, under the heading Setting the GPIB Address). • • The 1257 is set to the same Make sure that the 1257 is set GPIB address as another to a unique GPIB address(to device in the system. set the 1257 GPIB address,...

  • Page 175: Non-Volatile Memory

    1257 User Manual Non-Volatile Memory PROBLEM POSSIBLE CAUSES WHAT TO DO • • Switch states or menu Switch states and menu After saving switch states or settings that have been settings must be saved in a menu preferences to the...

  • Page 176: Index

    1257 User Manual INDEX AC power, 2-1, 2-2 EXE, 5-10 automatic lockout, 5-44 Execution Error, 5-10 baud rate, 4-19, 4-21, 4-28 firmware revision, 4-31, 5-18 bus trigger, 5-22 flow control, 4-19, 4-20, 4-28, 5-27, 5-28 CLOSE, 5-2, 5-3, 5-4, 5-19, 5-23, 5-28, 5-30,...
  • Page 177 1257 User Manual non-volatile update, 5-45 RS-232 parameters, 4-23, 4-25 null modem, 4-15 RTS, 4-16, 4-19, 4-20, 5-27 numeric parameters, 5-25 safety, 5-27 OPC, 5-7, 5-8, 5-11, 5-18, 5-28 SCPI, 2-5, 4-14, 5-1, 5-2, 5-3, 5-4, 5-13, 5-14, 5-19, 5-22, 5-24, 5-25, 5-31, 5-32, 5-34, 5-...

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