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 White Window 1.xx User's Guide

Control software for White Instruments 5022XL, 5024XL, IQ5022XL, IQ5024XL, and 5024IQ digital signal processors.

Introduction

    This document
    This document describes how White Windows can be used to setup and control a White Instruments 5022XL, 5024XL, IQ5022XL, IQ5024XL, or 5024IQ product. The software and hardware requirements are reviewed, and instruction is given on the use of the White Windows software.
     
    A knowledge of the Windows 95 operating system and the audio features offered on the 502X is assumed.
     
    In this help document, the term "502X" refers to any of the above models unless otherwise noted.
     
    Please Note: The 502X DSPs have a finite limit to their computational resources. This is quantified as a maximum of 35 filter units. With the exception of delay, each filter or limiter implemented in the unit will deduct from the total resource available. It is, therefore, suggested that the user, first, plan the utilization of the unit's computational resource by refering to the DSP 5000 Series - Resource Table and Worksheet in the Technical Reference section of this document.

Contents

Quick Jump to Sections

 

Introduction 

To start right away... 

White Windows-1 Capabilities 

Requirements 
Hardware 
Software 

Setting up the hardware 

Getting started 

Connecting to hardware 
Bus interrogation 
Online and offline 

Editing parameters 
Main window controls 
Mixer controls 
Channel controls 
See also: Filters 

 

Filters 

Limiting 

Tabular format 
Keyboard movement in tabular format 
Changing values in tabular format 
Tabular format options 

Other functions 
Memories 
Security 
Clip indicators 
File commands 

Troubleshooting 
Cannot find any (or all) devices 
Device gives error messages repeatedly 
Other problems 

Technical Reference 
DSP 5000 Series - Resource Table and Worksheet 
Download Acrobat version of above

IMPORTANT:  See notes on Data Security Measures

To contact us:

 
To start right away...

If you prefer to get White Windows installed and on-line before preceding with reading this document, refer to Getting started and Connecting to hardware. Make sure you understand and meet the Requirements.

 

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


White Windows capabilities

White Windows provides a graphical user interface for the 502X products. With White Windows, you can:

  • add, remove, and edit parametric, highpass, lowpass, and shelving filters
  • add, remove, and edit crossovers
  • adjust input levels and assignment
  • adjust output gains, delay, phase-inversion, and mute status
  • turn on/off limiting on output channels
  • save and restore to internal memory locations in the502X
  • store and recall device settings from the PC's hard drive
  • If you need help
    If you have exhausted the trouble-shooting procedures described in Troubleshooting contact technical support at (512)389-3800 or email technical@whiteinstruments.com

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


Requirements

    Hardware
    White Windows 1.05 requires a 5022XL, 5024XL, IQ5022XL, IQ5024XL, or 5024IQ with firmware version 2.26 or higher. 4MB free hard-drive space is required on the host computer. A pentium-class processor with 16MB of RAM and 256 color display is strongly recommended.

    The  IQ5022XL, IQ5024XL, and 5024IQ are equipped with a current-loop port and require an RS-232 to current-loop converter between the computer and the processor.  This converter (often a White Link, White Link II or Crown Pocket Interface) requires a power source and a 4-conductor cable, both of which are described in the product manual for the respective converter device.

    The 5022XL and 5024XL use a direct RS-232 connection and require a standard 9-pin RS-232 cable.

    Software
    White Windows runs on the Windows 95 operating system.

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


Setting up the hardware

To connect the 502X unit to your computer, perform the following steps:

    1. On the IQ5022XL, IQ5024XL, or 5024IQ units, attach the 9-pin RS-232 or 25-pin RS-232 cable on the interface to your PC's serial port and connect the interface's four-pin cable to the unit's IQ interface port (located on the left side of the rear of the unit). On the 5022XL or 5024XL, connect a standard 9-pin RS-232 cable directly from your PC's serial port to the RS-232 connection on the rear of the device. For the 5022XL and 5024XL devices, this completes the hardware connection process; all other device types should procede to the next step.

    Screen - Select Hardware Screen - Select Hardware|Interface
    2.
    Make sure the interface device is set to the correct baud rate (38400).  This should agree with the setting used by White Windows, which assumes 38400 as the default.
     
     Interface Options Screen

    3. With the interface device turned off, turn power on to the502X..

    4. After about 3 seconds, apply power to the interface device (this may be done by turning on the device or attaching the power cord, depending on the device type).

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


Getting started

The window titled "White 502X" is the main window of White Windows. This window shows a  symbolic representation of the signal flow through the unit, along with other controls. At the top of the window is the application's main menu.
Screen - Main Screen 
To get started using White Windows, read the following topics:

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


    COM port
    The dialog for configuring the port is under the Hardware | Interface ... selection of the main menu. Make sure that the baud rate is set to 38400 and the correct COM port number is selected for your computer.
    Interface Options Screen 
    The Timeout and Retries parameters adjust the amount of time White Windows allows to pass while waiting for a response from the device before reporting that an error has occured.  For larger values of these parameters, especially Timeout, communications tend to run a little slower but more robustly.
     
     
     

 

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


    Device type
     
    Screen - Hardware | Select DeviceWhite Windows begins with a 5024 selected as the default device type.

    Screen - Hardware | Select Device | 5022If you have a 5022, you can change to this type by selecting the Hardware | Select Device ... menu option.  Choose the 5022 device type.

     
     
    When you close the dialog, you will notice that the "C" and "D" sections of  the main dialog (representing the C and D output channels for a 5024 model) are disabled.

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


    Offline mode
    White Windows starts in offine mode. This means that the window controls do not represent or  modify the settings on whatever 502X device might be attached to your PC. The controls instead represent the state of a virtual device that is stored in PC memory. This virtual device has the same parameters of a real device, and White Windows will react to changes of these parameters in most cases exactly as if the device were real.

    Screen - File | Save AsThe virtual device can be saved to disk for upload to a real device later.
     
    Offline mode is a good place to experiment with the capabilities of White Windows. For further instruction on using White Windows to change parameters, proceed to Editing parameters.  If you want to go online now, proceed to Connecting to hardware.

     

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference



Editing parameters

Most parameter changes in White Windows are self-explanatory at the lowest level. A slider labeled Delay for instance, will modify and report the delay setting for the associated output channel.

The majority of the parameters that White Windows can adjust are in the following groups:

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference



Main window controls
The main window represents the signal processing architecture of the DSP502X. The signal-flow diagram represents two inputs to the left and two or four output channels on the right. In between, signals are routed through a 2x4 mixer (represented by the button labeled (X). All controls related to a given channel are grouped in a labeled rectangle (A for instance). An LED indicator is used to show the signal clipping condition.
Screen - Main 
Other controls in the main window include the DSPI light toggle (used for diagnostics and little else), the contact switch enable control, and buttons to launch dialogs that control memory and security features. Each output channel has a "Mute" button which toggles whether or not the signal is passed.

Limiting is turned on for each channel by clicking the "Limit" button in the output channel group.
 

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


    Mixer controls

    Screen - Mix ButtonLaunch the mixer dialog by pressing the button in the middle of the signal flow diagram labeled X.
     
     
     

      Mixer button
       
      Screen - Mixer Dialog 
       
      This dialog allows each output to be assigned either or both input channels as sources.  In Mono mode, both inputs are assumed to have the same signal and an analog averaging is used to improve noise performance. In this mode, only the right channel's controls are active even though the left input channel can still be used. In stereo, both channels are enabled.

     

 

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference



Channel controls
The main screen buttons labeled R, L or R+L will launch the channel dialog screen. In this dialog, filters are assigned to the channel and attributes such as level and delay are adjusted. See Filters for details on adjusting filters. From the channel dialog, you can switch to the other channels using the series of labeled buttons in the upper left. The depressed button indicates the currently selected channel.
Screen - Channel Dialog 

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


Connecting to hardware

The following topics describe issues relating to getting White Windows to communicate to the hardware. Also see Setting up the hardware.

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


    Bus interrogation

    Screen - Hardware | Use Fast Roll CallThe first step White Windows performs in connecting to 502Xhardware is interrogating the bus. This can be done one of two ways. If you are using only one device on the bus, you should use fast roll call. If you are using a multiple devices, especially a mixture of 5022s and 5024s on the same bus, you must not use fast roll call.
     
     
     
    This is very important, because both 5022s and 5024s will stop communicating on the bus if a fast roll call is issued for the other device type. If a fast roll call is performed for the 5022 device, for instance, all 5024 devices on the bus will need to have power cycled on them before they will respond to communication traffic again.
     
    Screen - Hardware | Select FRC deviceIf you are using fast roll call, you must select the device type. This is not the same, necessarily, as the device type for offline mode. The device type interrogated by the fast roll call is specified by the Hardware | Select FRC device ... menu option.
     
     
     
     
    Screen - Hardware | Select FRC Device | ChooseProceed with Hardware | Find White Devices. A dialog will appear as the bus is enumerated. When the process is complete a dialog will appear telling you how many devices were found. If only one device was found, White Windows will attempt to go online with the device. If several devices are found, a dialog will open and you must select the device with which White Windows will go online. White Windows will upload device parameters, during which the "Busy" light in the lower-right corner of the main window will be on. Pending successful upload of the device parameters, the light will go off and the "Online" box will be checked.
     
    If White Windows cannot find all devices or an error is reported while going online, see the section on Troubleshooting.

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


    Online and offline

    Screen - Online BoxOnce the bus has been interrogated, the procedure does not need to be repeated unless a new device is added to the bus. However, you can go offline and online at will by use of the Online Check Box. Every time that White Windows goes online with a device, it will upload all of the device parameters again to make sure that no discrepancy may exist.
     
     

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


Filters

Filters are associated with a given input or output channel and come in two basic flavors: an equalizer (EQ) filter, or a crossover. Crossovers are only available on the output channels. The 502X can implement up to 35 filters total in any distribution amongst channels.
Screen - Main Filter Screen 
Screen - Engage ChangeIn order to make sure that dangerous out-of-band signal levels do not damage equipment, the 502X temporarily buffers changes to the filter structure until a confirmation command is sent to the device. This change pending indicator is represented by a yellow LED at the top of the channel dialog.

To confirm the change, hit the Now button (enclosed in the Engage group). To cancel the change, hit the Cancel button.

    Avoid using this mechanism as an extended undo feature; certain actions will confirm filter changes automatically and perhaps unexpectedly.

 

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


Limiting

Screen - Limit ButtonLimiting adjusts the level of the output signal to guarantee that analog clipping will not occur due to digital boost in the signal. This guarantees that if there are crossovers on the outputs, dangerous frequency content will not be introduced after the crossover due to the clipping distortion in the analog hardware.
 

The limiting operation is entirely automatic and has no user-controlled parameters.
 

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


Tabular format
Screen - Option | Tabular 
One of the alternate methods to viewing equalizer filters is through the tabular  format. This format, available from the Options | Tabular Format ... menu selection, presents a table of all equalizer (not crossover) filters.

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


    Keyboard movement in tabular format
    To use the keyboard in the table, first click with the mouse somewhere on the table. This tells the Windows 95 operating system that the table should receive all keyboard input. The arrow keys, page-up and page-down keys, and the tab key move through the table, and the table will scroll accordingly in response to this. As the table scrolls, the top-most row (parameter labels) will not change.

 

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


    Changing values in tabular format
    Values in each cell of the table can be changed using the space bar or double-clicking the mouse. In some cases this will cause a pop-up menu to appear with choices for the cell's value. In other cases, such as frequency, the value needs to be typed in. When the value must be input using the keyboard, the edit control in the upper-right corner of the dialog is used.  To make a change, you can either hit the space bar (or double-click the mouse) on the desired cell in the table and type in the new value (hitting return when you are done) or you can click on the edit control and type in the text (again hitting return). Keyboard focus is automatically returned to the table when return is pressed.
     
    The help bar below the table will prompt you on the valid range of input when a text cell in selected for editing.

 

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


    Tabular format options

    Screen - Tabular | Bandwidth | QThe bandwidth value (Q) of parametric filters can be entered as fractions of an octave or as Q itself. The mode can be switched by use of the right mouse button on the Q or Bandwidth label cell at the top of the column.
     
     
     
    Screen - Tabular | BypassFilters can be bypassed (only when online) in tabular mode by toggling the Bypass button in the filter's row. The label cell at the top of the column allows a Set All/Clear All option available with the right mouse button.

    Note: Bypassed filters are still present in the device but are momentarily disabled. The unit forgets the bypass condition upon reset, so this parameter is intended only to temporarily remove a filter's effects.

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference



Other functions

White Windows provides various miscellaneous controls and functions summarized in the following topics:

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


    Memories
     
    Screen - Memory ButtonMemories can be saved, restored and named. Access the memory dialog by the Memory button in the main menu.
     
    Double-clicking on a memory location will cause it to be recalled.
     
     
     
     
     
     
     
     
     

 

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


    Security
    System passwords apply only to 502X models with front panel controls and may be changed only by the front panel of the device. 502X models without front panel controls have no system password feature.

    If the password has been set ("----" is the same as no password) then the device will always power up in a locked state. To unlock the device, the password must be entered through the software. White Windows will prompt you for this when the device is connected.

    If you want to lock the device after you have unlocked it, you can perform this action from the Security dialog available from the main dialog. Likewise, the device can be unlocked again from the same point.

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


    Clip indicators

    Screen - Output Clip IndicatorsThe LEDs on the input and output channels monitor the clip indicators on the front panel of the device. The clipping status is polled when no other communications are present on the bus. Because of the relatively slow speed of the serial port, as well as the absence of certain hardware that is used on the 502X device, the clip indicators offer only a rough approximation of the actual clip-indication circuit that is implemented on the unit itself. They can, however, be useful to indicate signal presence and general level  when you are setting up the unit from a remote location. The clip indicators can be turned on and off from the Options | Monitor Clip Indicators menu selection.
     
     

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


    File commands
     
    Screen - File MenuSettings can be saved to a file at any time. Similarly, a file can be uploaded to White Windows in offline or online mode. In online mode, be aware that the device's current setting will be overwritten immediately. The safest practice is to upload the file in offline mode, verify that the settings are what you want, and then go online and indicate that the current settings should be uploaded to the hardware.
     
     
     
    The device settings can be printed to a text file at any time. Use the File | Print command.

 

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


Troubleshooting

See the appropriate topic for your problem.

 For those familiar with IQ communications:

  • Technical reference

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


    Cannot find any (or all) devices
    If devices are not found in interrogation, there are a number of possible problems:

 

    • Cable is loose or miswired   Verify that the cable has been properly wired according to the instructions for the interface device. Occasionally wires may pull loose from the connectors. If no units are found, this might be the problem. If any units are found, this is most likely not the issue.
    • Interface   The interface may need to be reset, particularly if you have cycled power on any of the 502X units or have had a communication timeout with one of the devices. Simply turn power off for a moment, turn it back on, and wait about 3 seconds before trying communication again.

      

    • Wrong COM port settings   Make sure you selected the correct serial port. Make sure the baud is set to 38400 in White Windows and in the interface (if selectable).
    • Conflict in bus address  All units of the same device type must have unique addresses.
    • Using Fast Roll Call inappropriately   If you have more than one device you should not use fast roll call. See the section on Connecting to hardware.
    • Device has stopped responding   Some communication errors may put the interface of the 502X into an invalid state. To clear this condition, the power should be cycled on the unit. Settings will not be lost on the device in this event.

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


    Device gives error messages repeatedly

 

    • Device has stopped responding  Some communication errors may put the interface of the 502X into an invalid state. To clear this condition, the power should be cycled on the unit.  Settings will not be lost on the device in this event.
    • Wrong device type  If a communication error occurs during bus interrogation, White Windows may have an invalid device address or type. Check the device list to verify that the type and address are correct. If anything looks wrong, repeat bus enumeration by Hardware | Find White Devices.

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


    Other problems
     
    I am running out of filter capacity quickly.  Why?
     
    The 502X can support a maximum of 35 filter units (seeDSP 5000 Series - Resource Table and Worksheet).
     
    Using limiting on two output channels require 5 filter units and 10 filter units are required for four channel limiting.
     
    Also, be aware that the 502X reserves the upper filter numbers for limiting and crossovers, so equalizer filters in this range will prohibit activation of limiting or addition of crossovers even when the device is under capacity. See Filters.

 

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


 

DSP 5000 Series - Resource Table and Worksheet

Download the Acrobat version of the table and worksheet (it will fit standard letter size paper for printing). If the total is less than 36 (filter units), your configuration will fit in one DSP 5000 Series unit.

Definitions:

Filter: A frequency selective response entered in either the crossover or equalizer sections.

Possible filters are:

    Butterworth (BW), Bessel (BE), Linkwitz-Riley (LR), Parametric (PM), High-Pass (HPF), Low-Pass (LPF), High Shelving (HSHLF), Low Shelving (LSHLF)

Edge: A crossover output bandpass response edge, high or low.
 

Crossover Section

Number of LR edges

x 2 =

Number of 6 or 12 dB/octave BW or BE edges

x 1 =

Number of 18 or 24 dB/octave BW or BE edges

x 2 =

Equalizer Section

Number of PM filters

x 1 =

Number of HSHLF or LSHLF filters

x 1 =

Number of 6 or 12 dB/octave HPF or LPF filters

x 1 =

Number of 18 or 24 dB/octave HPF or LPF filters

x 2 =

Limiting Section

ONE Channel Limited

= 2

TWO Channels Limited

= 5

THREE Channels Limited

= 7

FOUR Channels Limited

= 10

Total

 

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


Technical reference
 
This section is intended as an aid in technical troubleshooting for people who are familiar with the IQ Ucode protocol
 

    Transport Layer Header

 

    •  Device Address
    • Device Type
    • Acknowledge byte
    • Count

    Application Packet

 

    •  Object ID
    • Message ID
    • Data

    Transport Trailer
    Checksum (all bytes in communication packet, modulo 256)

 

      ucode object ids- Object ID Guide

     

 

      Object Name     Dec.     Hex.     ASN.1

     

 

      ----------------------------------------
      Delay_A         70       46       46
      ...
      In_Level_Left   74       4A       4A
      In_Level_Right  75       4B       4B
      Out_Level_A     76       4C       4C
      ...
      Filt_1_Chan     80       50       50
      ...
      Filt_1_Type     115      73       73
      ...
      Filt_1_Freq     150      96       96 01
      ...
      Filt_1_Slope    185      B9       B9 01
      ...
      Filt_1_Q        220      DC       DC 01
      ...
      FF_Dummy1       255      FF       FF 01
      ...
      Filt_1_Gain     256      100      80 02
      ...
      Xover_AL_Shape  291      123      A3 02
      ...
      Xover_AL_Slope  299      12B      AB 02
      ...
      Xover_AL_Freq   307      133      B3 02
      ...
      Firmware vers.  315      13B      BB 02
      Left_Clip       316      13C      BC 02
      Right_Clip      317      13D      BD 02
      Output_Clip     318      13E      BE 02
      Limit_Enable_A  319      13F      BF 02
      ...
      Comp_Enable     323      143      C3 02
      Link_Group_A    324      144      C4 02
      ...
      Exp_Thresh_A    328      148      C8 02
      ...
      Comp1_Thresh_A  332      14C      CC 02
      ...
      Comp2_Thresh_A  336      150      D0 02
      ...
      Exp_Rat_A       340      154      D4 02
      ...
      Comp1_Rat_A     344      158      D8 02
      ...
      Comp2_Rat_A     348      15C      DC 02
      ...
      Attack_A        352      160      E0 02
      ...
      Release_A       356      164      E4 02
      ...
      Fixed_Gain_A    360      168      E8 02
      ...
      Filter_Recalc   364      16C      EC 02
      (unused)        365
      (unused)        366
      Filt_1_Bypass   367      16F      EF 02
      ...
      Filt_16_Bypass  382      17E      FE 02
      FFDummy2        383      17F      FF 02
      Filt_17_Bypass  384      180      80 03
      ...

       common message IDs

        $09 -- Set State
        $0A -- Get State

      DSP device IDs

        DSP5024 -> Device type 1776 or ISN.1 0DF0
        DSP5022 -> Device type 1648 or ISN.1 0CF0

       

     

 

      502x error codes

     

 

      $01 Incomplete UCode message
      $02 Parameter out of range
      $03 Invalid Object ID
      $04 Message ID unsupported by object
      $05 ASN.1 value > 3 bytes
      $06 Attribute ID out of range
      $07 Method ID out of range
      $08 Combuf full
      $09 Unsupported ASCII character
      $0A Wrong password
      $0B Security code not entered
      $0C Device locked

     

 

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


Data security measures

In order to prevent corruption of your settings, never make a change to parameters while White Windows is online. Refrain from using the front panel or changing a contact-closure switch setting. If you want to make a change in one of these ways, take White Windows offline using the checkbox in the main window, execute the change, and then bring the program into online mode again. This will prevent discrepancies between the device's actual settings and White Window's copy of the parameters. Such discrepancies may cause White Windows to allow a parameter change that could overload the device's capacity and cause a reset.

The DSP502X does not save parameters to permanent memory until it is powered off or an explicit memory-save command is executed. Although unlikely, in the event that the unit should lockup or reset before power is removed, the changes to the current settings since the last power-up will be lost. Therefore it is recommended as good procedure to occasionally save the current settings to a spare memory location so that these can be recalled quickly in such an event. Again, the DSP502X has been designed and tested to avoid the possibility of any such failure when operated as specified, but nevertheless the practice of backing up your settings is suggested as part of a redundant data security measure.
 

Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


To contact us:

    White Instruments
    1514 Ed Bluestein Blvd., Suite 304
    Austin, TX 78721
     
    Phone: (512) 389-5358
    Fax: (512) 301-3932
     
    Email: cvanr@whiteinstruments.com

 

 Contents|Setting up the hardware | Getting started | Connecting to the hardware | Filters | Limiting

Tabular Format | Other functions | Troubleshooting | Technical reference


Links  |   Site Map   |   Product Index  |   Manuals Index | Software Index   | 
 whi-win-1-hlp.htm - 3/9/98

  


White Instruments Div. C Van R, Inc.
- P.O. Box 90003 Austin, TX 78709 U.S.A.
Phone: 512-389-5358  Fax: 512-301-3932
Email: sales@whiteinstruments.com
webmaster: Emory Straus - eestraus@mymediastaff.com