Western Telematic CMS-16 Bedienungsanleitung

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Richtige Gebrauchsanleitung

Die Vorschriften verpflichten den Verkäufer zur Übertragung der Gebrauchsanleitung Western Telematic CMS-16 an den Erwerber, zusammen mit der Ware. Eine fehlende Anleitung oder falsche Informationen, die dem Verbraucher übertragen werden, bilden eine Grundlage für eine Reklamation aufgrund Unstimmigkeit des Geräts mit dem Vertrag. Rechtsmäßig lässt man das Anfügen einer Gebrauchsanleitung in anderer Form als Papierform zu, was letztens sehr oft genutzt wird, indem man eine grafische oder elektronische Anleitung von Western Telematic CMS-16, sowie Anleitungsvideos für Nutzer beifügt. Die Bedingung ist, dass ihre Form leserlich und verständlich ist.

Was ist eine Gebrauchsanleitung?

Das Wort kommt vom lateinischen „instructio”, d.h. ordnen. Demnach kann man in der Anleitung Western Telematic CMS-16 die Beschreibung der Etappen der Vorgehensweisen finden. Das Ziel der Anleitung ist die Belehrung, Vereinfachung des Starts, der Nutzung des Geräts oder auch der Ausführung bestimmter Tätigkeiten. Die Anleitung ist eine Sammlung von Informationen über ein Gegenstand/eine Dienstleistung, ein Hinweis.

Leider widmen nicht viele Nutzer ihre Zeit der Gebrauchsanleitung Western Telematic CMS-16. Eine gute Gebrauchsanleitung erlaubt nicht nur eine Reihe zusätzlicher Funktionen des gekauften Geräts kennenzulernen, sondern hilft dabei viele Fehler zu vermeiden.

Was sollte also eine ideale Gebrauchsanleitung beinhalten?

Die Gebrauchsanleitung Western Telematic CMS-16 sollte vor allem folgendes enthalten:
- Informationen über technische Daten des Geräts Western Telematic CMS-16
- Den Namen des Produzenten und das Produktionsjahr des Geräts Western Telematic CMS-16
- Grundsätze der Bedienung, Regulierung und Wartung des Geräts Western Telematic CMS-16
- Sicherheitszeichen und Zertifikate, die die Übereinstimmung mit entsprechenden Normen bestätigen

Warum lesen wir keine Gebrauchsanleitungen?

Der Grund dafür ist die fehlende Zeit und die Sicherheit, was die bestimmten Funktionen der gekauften Geräte angeht. Leider ist das Anschließen und Starten von Western Telematic CMS-16 zu wenig. Eine Anleitung beinhaltet eine Reihe von Hinweisen bezüglich bestimmter Funktionen, Sicherheitsgrundsätze, Wartungsarten (sogar das, welche Mittel man benutzen sollte), eventueller Fehler von Western Telematic CMS-16 und Lösungsarten für Probleme, die während der Nutzung auftreten könnten. Immerhin kann man in der Gebrauchsanleitung die Kontaktnummer zum Service Western Telematic finden, wenn die vorgeschlagenen Lösungen nicht wirksam sind. Aktuell erfreuen sich Anleitungen in Form von interessanten Animationen oder Videoanleitungen an Popularität, die den Nutzer besser ansprechen als eine Broschüre. Diese Art von Anleitung gibt garantiert, dass der Nutzer sich das ganze Video anschaut, ohne die spezifizierten und komplizierten technischen Beschreibungen von Western Telematic CMS-16 zu überspringen, wie es bei der Papierform passiert.

Warum sollte man Gebrauchsanleitungen lesen?

In der Gebrauchsanleitung finden wir vor allem die Antwort über den Bau sowie die Möglichkeiten des Geräts Western Telematic CMS-16, über die Nutzung bestimmter Accessoires und eine Reihe von Informationen, die erlauben, jegliche Funktionen und Bequemlichkeiten zu nutzen.

Nach dem gelungenen Kauf des Geräts, sollte man einige Zeit für das Kennenlernen jedes Teils der Anleitung von Western Telematic CMS-16 widmen. Aktuell sind sie genau vorbereitet oder übersetzt, damit sie nicht nur verständlich für die Nutzer sind, aber auch ihre grundliegende Hilfs-Informations-Funktion erfüllen.

Inhaltsverzeichnis der Gebrauchsanleitungen

  • Seite 1

    [ Home | User's Guide Archive | NetReach Products | DataReach Products | PollCat Products | Contact WTI ] WTI Part No. 13027 Rev. B CMS-16 Console Management Switch User's Guide 5 Sterling, Irvine, California 92618-2517 USA U.S. & Canada: (800) 854-7226 Phone: (949) 586-9950 Fax: (949) 583-9514 www.wti.com Warnings and Cautions: WTI C[...]

  • Seite 2

    No Serviceable Parts Inside; Authorized Service Personnel Only Do not attempt to repair or service this device yourself. Internal components must be serviced by authorized personnel only. Shock Hazard - Do Not Enter ● Choc Hasard - N'entrent ● Schocke Hazard - Test Nicht Betrete ● Otro Hazard - Do Non Entrano ● Nameplate Power Warning [...]

  • Seite 3

    Open Racks: Make certain that the rack frame does not block the ventilation slots on the instrument cover. If the device is installed on sliders, check the unit when seated all the way into the rack to make certain that ventilation slots are not blocked. 2. Ventilation Slots in the instrument cover are provided to allow ventilation for heat dissipa[...]

  • Seite 4

    4.2.4. Default Command Echo (Sw7) ■ 4.3. Initialize Unit to Default Settings ❍ 4.4. Connecting Devices to the CMS ❍ 4.5. Application Example ❍ 5. Configuration 5.1. Access to the CMS Command Mode ❍ 5.2. System SetUp Ports ❍ 5.3. Password Functions 5.3.1. The Supervisor Password ■ 5.3.2. The Port Passwords ■ ❍ 5.4. Defining the Sit[...]

  • Seite 5

    8. Saving and Restoring Configuration Parameters 8.1. Sending Parameters to a File ❍ 8.2. Restoring Saved Parameters ❍ ● 9. Upgrading CMS Firmware ● 10. Command Reference Guide 10.1. Command Conventions ❍ 10.2. Command Response ❍ 10.3. Command Summary ❍ 10.4. Command Set ❍ ● Appendices A. RS232 Port Interface ● B. Specifications[...]

  • Seite 6

    1. Introduction The CMS-16 Console Port Management Switch provides secure, in-band and/or out-of-band access to RS232 console ports and maintenance ports on UNIX servers, routers and other network equipment. System Administrators can access remote devices in order to change configuration parameters, connect users to restricted ports, collect buffer[...]

  • Seite 7

    COURIER FONT Indicates characters typed on the keyboard. For example, /E or /P 02 . [Bold Font] Text set in bold face and enclosed in square brackets, indicates a specific key. For example, [Enter] or [Esc] . < > Indicates required keyboard entries: For Example: /P <n> . [ ] Indicates optional keyboard entries. For Example: /W [n] . 2. [...]

  • Seite 8

    includes sixteen Activity LEDs, and the CMS-8 includes eight Activity LEDs. 2.2. Back Panel Figure 2.2: Instrument Back Panel Network Port: An RJ45 Ethernet port for connection to your TCP/IP network. To communicate via network, you must first specify the IP Address, Subnet Mask, and Gateway Address as described in Section 5.5.4 . 1. Power Cable Re[...]

  • Seite 9

    can be used to determine if the unit is operating properly. 3.1. Communication Parameters The Option Switches, located on the instrument back panel, select default operating settings. Switch functions are summarized in Section 4.2, and on a label on the CMS unit. When the unit is shipped from the factory, the Option Switches are set for 9600 baud, [...]

  • Seite 10

    Therefore, Ports 1 and 2 are generally used for communication during initial set-up and configuration, or after the unit has been reinitialized (reset) to default parameters. Note: For more information on System SetUp Port capabilities, please refer to Section 5.2 . 3.4. Connecting your PC to the CMS The CMS can either be controlled by a local PC t[...]

  • Seite 11

    Cable Connection: Check the connection between the CMS and the PC. Make certain the cable connectors are firmly seated. . Communication Parameters: Make certain the CMS and ProComm are using the same baud rate. b. Help Screen: Type /H [Enter] to display the Supervisor Level Help Screen ( Figure 3.1 ). COMMAND MENU DISPLAY CONFIGURATION /S[P] Port S[...]

  • Seite 12

    11 | (undefined) | (undefined) | Free | Any | 0 12 | (undefined) | (undefined) | Free | Any | 0 13 | (undefined) | (undefined) | Free | Any | 0 14 | (undefined) | (undefined) | Free | Any | 0 15 | (undefined) | (undefined) | Free | Any | 0 16 | (undefined) | (undefined) | Free | Any | 0 Enter /H for Command Menu Figure 3.2: The Port Status Screen ([...]

  • Seite 13

    and press [Enter] . To display the Site I.D., type /J [Enter] . b. Note that the Site I.D. will be cleared when the unit is initialized. c. This completes the introductory overview of the CMS. Please proceed to Section 4 and Section 5 for complete installation and configuration procedures. 4. Hardware Installation 4.1. Connecting Power to the CMS U[...]

  • Seite 14

    Figure 4.1: Terminal Block Assembly (DC Units Only) 4.2. Configure Option Switches When the CMS is shipped from the factory, the Option Switches are configured for 9600 baud, 8 Bits-No Parity, RTS/CTS handshaking, verbose command response, and command echo ON (all switches Down). These settings are compatible with most applications. If the default [...]

  • Seite 15

    Up Down Up 38.4K Down Up Up 57.6K Up Up Up 115.2K * = Factory Setting 4.2.2. Default Handshake (Sw4, Sw5) The default handshake format must match the format your control device will use when communicating with the CMS. Option Switches 4 and 5 can select RTS/CTS (hardware), XON/XOFF, Both or None. Switch Default Handshake 4 5 Down Down RTS/CTS * Up [...]

  • Seite 16

    * = Factory Setting 4.3. Initialize Unit to Default Settings If Option Switch settings are changed, new parameters will not take effect until the CMS is initialized. Caution: After initialization, the CMS will revert to the parameters specified by the Option Switches. Any command-selected parameters will be lost. Simultaneously press the SET and CL[...]

  • Seite 17

    Figure 4.2: CMS Application Example (Not to Scale) The example in Figure 4.2 shows one of many possible installation configurations for the CMS. In this example, ports have been configured as follows: Network Port: The Network Port allows telnet access by remote Supervisors and/or Users. When a telnet connection is established, the CMS will prompt [...]

  • Seite 18

    Ports 5, 7, and 9 (User Ports): The Port Password "COLOCATION1" has been assigned to these three ports. If the CMS is contacted via the Network Port or Modem Port, and this password is entered at log in, Users will only be able to review status and connect to the devices attached to Ports 5, 7, and 9. ● Ports 12, 14, and 16 (User Ports)[...]

  • Seite 19

    If you have defined the Supervisor Password, a prompt will be displayed. Key in your Supervisor or Port password and press [Enter] . If the Supervisor Password has not been defined, just press [Enter] . The "CMS>" prompt will appear. ii. Network Access: In order to access the CMS command mode via network, the IP Address, Subnet Mask an[...]

  • Seite 20

    (User) Passwords. The Supervisor Password allows system administrators to invoke unit configuration commands, and the Port Passwords allow users to access specific ports in order to create connections between ports or view port configuration parameters. 5.3.1. The Supervisor Password The Supervisor Password allows access to higher level CMS configu[...]

  • Seite 21

    The Port Passwords (or User Passwords) allow system administrators to restrict access to a specific group of ports. When the CMS command mode is accessed with a Port Password, users may only connect to the RS232 Ports to which they have been granted access, and review configuration parameters for those ports. Port Passwords do not grant access to C[...]

  • Seite 22

    [Enter] , a prompt will appear. Key in the desired password then press [Enter] , the CMS will prompt you to re-key the password in order to confirm spelling and capitalization. Key in the password a second time, and then press [Enter] . Note: The Supervisor Password is case sensitive. Make certain to note the exact password entered, including the c[...]

  • Seite 23

    5.5.2. Port Modes The CMS offers four different port operation modes; Any-to-Any Mode, Passive Mode, Buffer Mode, and Modem Mode. The Port Modes function as follows: Any-to-Any Mode: Allows communication between connected ports. Any-to-Any Mode Ports can be connected to other Any-to-Any Mode, Passive Mode, Buffer Mode, or Modem Mode Ports by access[...]

  • Seite 24

    If the /P Command is entered without the port number (e.g. /P [Enter] ), the configuration menu for your resident port will be displayed. . The /P command is only available in the Supervisor Mode b. PORT PARAMETERS #02 1. Port Name: (undefined) 2. Password: (undefined) 3. Baud Rate: 9600 4. Bits/Parity: 8-None 5. Stop Bits: 1 6. Handshake Mode: CTS[...]

  • Seite 25

    7. Port Mode: Defines the operation mode for this port. Note that Ports 1 and 2 cannot be configured for Passive Mode or Buffer Mode. (Default = Any-to-Any Mode). When Any-to-Any, Passive, or Buffer Mode is selected, the unit will display the DTR Output prompt as shown in Figure 5.1 . The DTR Output prompt is not displayed when Modem Mode is select[...]

  • Seite 26

    73. Hang-Up String: Defines the modem hang-up message. Although the CMS will pulse the DTR line in order to hang-up an attached modem, the Hang-Up string is often useful for controlling modems that do not use the DTR line. (Default = undefined). ❍ 8. Supervisor Mode: Permits or denies port access to Supervisor Mode. When this item is enabled (Per[...]

  • Seite 27

    11. Timeout Disconnect: Enables and selects the Timeout Period for this port. If enabled, and the port does not receive or transmit data for the specified Timeout Period, the port will disconnect. When the port is set for Any-to-Any Mode, Passive Mode, or Buffer Mode, the default setting for this item is "OFF". When the port is set for Mo[...]

  • Seite 28

    Figure 5.3: Network Parameters Menu (Supervisor Mode Only) To access the Network Parameters menu, type /N and press [Enter] . The screen shown in Figure 5.3 will be displayed. Note that the Network Parameters menu is only available in Supervisor Mode. The Network Parameters menu offers the following options: IP Address: Defines the IP Address for t[...]

  • Seite 29

    command that will be required in order to terminate the connection. The One Character Disconnect is intended for situations where the destination port should not receive the disconnect command. When the Three Character format is selected, the disconnect sequence will pass through to the destination port prior to breaking the connection. ● When Th[...]

  • Seite 30

    Security menu ( Figure 5.4 ). IP SECURITY: 1. Security Mask #1: (undefined) 2. Mask #1 Action: Permit 3. Security Mask #2: (undefined) 4. Mask #2 Action: Permit 5. Security Mask #3: (undefined) 6. Mask #3 Action: Permit 7. Security Mask #4: (undefined) 8. Mask #4 Action: Permit 9. Security Mask #5: (undefined) 10. Mask #5 Action: Permit Enter: #<[...]

  • Seite 31

    Mask #1 Action: Deny ● Security Mask #2: 192.255.255.255 ● Mask #2 Action: Permit ● Since 255 is a wild card, Mask #1 blocks all IP addresses Mask #2 then grants access to all addresses that begin with 192. Example 3: Allow access only by addresses that begin with 192, deny access to 192.1.1.5. Security Mask #1: 255.255.255.255 ● Mask #1 Ac[...]

  • Seite 32

    Access the CMS command mode. If the password prompt is displayed, key in your Supervisor Level Password. 1. At the command prompt, type /CP and press [Enter] , the menu shown in Figure 5.5 will be displayed. COPY PORT PARAMETERS: 1. Port Name: 2. Password: (undefined) 3. Baud Rate: 4. Bits/Parity: 5. Stop Bits: 6. Handshake Mode: 7. Port Mode: 74. [...]

  • Seite 33

    5.7. Save User Selected Parameters Although this step is optional, it is strongly recommended to save all user- defined parameters to an ASCII file. This will allow quick recovery in the event of accidental deletion or reconfiguration of port parameters. Section 8 describes the procedure for saving configuration parameters to an ASCII file. 6. The [...]

  • Seite 34

    12 | (undefined) | (undefined) | Free | Any | 0 13 | (undefined) | (undefined) | Free | Any | 0 14 | (undefined) | (undefined) | Free | Any | 0 15 | (undefined) | (undefined) | Free | Any | 0 16 | (undefined) | (undefined) | Free | Any | 0 Enter /H for Command Menu Figure 6.1: The Port Status Screen (Supervisor Mode, Defaults Shown) As shown in Fig[...]

  • Seite 35

    PORT DIAGNOSTICS: Version 1.02 Site ID: (undefined) PORT | NAME | STATUS | BAUD | COM | HS | MODE | BUF | CTS -----+------------------+--------+------+-----+-----+------+-----+----- 01+ | (undefined) | *Free | 9600 | 8N1 | RTS | Any | 0 | H 02+ | (undefined) | *Free | 9600 | 8N1 | RTS | Any | 0 | L 03+ | (undefined) | *Free | 9600 | 8N1 | RTS | Any[...]

  • Seite 36

    CTS: The High/Low status of the CTS line at the RS232 interface. ● 6.3. The Network Status Screen (/SN) This screen lists general parameters for the Network Port. To display the Network Status Screen ( Figure 6.3 ), type /SN and press [Enter] . Note that the Network Status Screen is only available in Supervisor Mode. When the user has logged on w[...]

  • Seite 37

    The /W command displays more detailed information about an individual CMS port. Rather than listing connection information for all ports like the Port Status Screens, the Port Parameters screen lists all defined parameters for a specific port. PORT PARAMETERS #03: 1. Port Name: (undefined) 2. Password: (undefined) 3. Baud Rate: 9600 4. Bits/Parity:[...]

  • Seite 38

    Note: When the command mode is accessed via the Network Port using a Port (User) password, the /W command will only display the Sequence Disconnect, Logoff Character, and the status of the Accept Break item. 7. Operation 7.1. Any-to-Any Mode Any-to-Any Mode Ports can be connected to other Any-to-Any, Passive, Buffer, or Modem Mode Ports by accessin[...]

  • Seite 39

    Invoke the /C command to connect the desired ports. Resident Connect: To connect your resident port to another port, type /C xx [Enter] . Where xx is the number or name of the port you want to connect. The CMS will display the numbers of the connected ports, along with the command sequence that will be required in order to disconnect the two ports.[...]

  • Seite 40

    Three Characters (Default): Uses the format " [Enter] LLL [Enter] ", where L is the selected Logoff Character. The Default Resident Disconnect Sequence is [Enter] +++ [Enter] . . One Character: When the One Character Disconnect Sequence is selected, simply enter the selected Logoff Character once (Default = + ). Note that it is not necess[...]

  • Seite 41

    Section 5.5.4 . Option 15 enables and defines the Timeout Feature. When the Timeout Feature is enabled, the port will automatically disconnect if no data is received for the defined Timeout Period. c. 7.1.2. Defining Hunt Groups A Hunt Group creates a situation where the CMS will scan a group of ports and connect to the first available port in the [...]

  • Seite 42

    Command Mode and type /C MODEM* [Enter] . Hunt Group Example 2: Ports 3, 4, and 5 are Any-to-Any Mode ports. All three ports are named "SERVER". 1. Your resident port is Port 1, and you want to connect Port 2 to the first available server, access the Command Mode and type /C 2 SERVER [Enter] . 2. 7.2. Passive Mode Passive Mode Ports funct[...]

  • Seite 43

    7.3.1. Reading Data from Buffer Mode Ports To retrieve data from Buffer Mode Ports, you must first determine which port buffers contain data. To check port buffers for stored data, access the Command Mode and type /S [Enter] to display the Port Status Screen. To retrieve data from buffer memory, go to a free Any-to-Any or Modem Mode Port, access th[...]

  • Seite 44

    connect command (/C) from an Any-to-Any Mode or Modem Mode port to retrieve data. If the Status Screen indicates an accumulation of data, the /E (Erase Buffer) command can be invoked to clear the buffer. 7.4. Modem Mode In addition to allowing data transfer, the Modem Mode also provides additional functions specifically related to modem communicati[...]

  • Seite 45

    several units will be configured with the same parameters. The "Save Parameters" procedure can be performed from any terminal emulation program (e.g. ProComm, Crosstalk, Hyperterminal, etc.), that allows downloading of ASCII files. 8.1. Sending Parameters to a File Start ProComm and access the CMS Command Mode. If the password prompt is d[...]

  • Seite 46

    Address, Subnet Mask, and Gateway Address cannot be altered. Type /S and press [Enter] , the CMS Status Screen will be displayed. Check the Status Screen to make certain the unit has been configured with the saved parameters. 5. 9. Upgrading CMS Firmware When new, improved versions of the CMS operating firmware become available, the "Upgrade F[...]

  • Seite 47

    function times out, type 1 and press [Enter] to continue, or press [Esc] to abort. If the upload is successful, the CMS will prompt the user to continue the upgrade or abort. Upgrade: To continue with the upgrade, type 1 and press [Enter] . CMS will erase the previous firmware, move new firmware from data flash to program flash memory, calculate an[...]

  • Seite 48

    (Default and Test Unit) commands are invoked, the /Y option can be included in the command line to override the "Are you Sure (y/n)?" prompt. For example, to disconnect Port 8 without displaying the "Sure?" prompt, type /D/Y 8 [Enter] . Enter Key: All commands are invoked by pressing [Enter] . ● Command Mode: CMS Ports will on[...]

  • Seite 49

    7 Invalid Syntax 8 Invalid Access 9 Enter Site ID: A Aborted B Enter Password: C Invalid Password D RAM Test Failed at * E Inactivity Timeout, Disconnected F Data in Buffer from Previous Connection ... Re-Enter Logoff Sequence to Purge Buffer. G Asleep * These verbose Response Messages include additional information not provided by terse Response M[...]

  • Seite 50

    Erase Buffer /E[/Y] <x> [x] [Enter] /E[/Y] * [Enter] X Reset Network Port /T [Enter] X Default & Test /I[/Y] [Enter] X Save Parameters /U [Enter] X Upgrade Firmware /UF [Enter] X (1) Supervisor Mode displays parameters for all ports; User Mode only displays parameters for the ports allowed by the Port Password. (2) To display Port Passwor[...]

  • Seite 51

    [Enter]+++[Enter] Resident Disconnect Sequence The Resident Disconnect Sequence is issued to disconnect your resident port from another port. For example, if you are communicating via Port 3, and Port 3 is connected to Port 4, the Resident Disconnect Sequence would be used to disconnect Port 3 from Port 4. Although the default Resident Disconnect S[...]

  • Seite 52

    Verbose: Connected xx , when a Resident Connection is initiated, the CMS will also display the currently selected Resident Disconnect Sequence for your port. Terse: 1 /CP Copy RS232 Port Parameters Allows quick set-up when all CMS RS232 ports will be configured with the same or similar parameters. When the /CP command is invoked, the CMS will displ[...]

  • Seite 53

    recovered. Availability: Supervisor Only Format: /E[/Y] <x> [x] [Enter] Where: x Is the number or name of the port buffer(s) to be cleared. To erase buffers for all ports, enter an asterisk. /Y (Optional) Suppresses the "SURE? (Y/N)" prompt. Response: Verbose: "Are You Sure (y/n)?", if Y, the unit will respond with "O[...]

  • Seite 54

    Switches. Caution: When /I is invoked, the CMS will revert to the parameters specified by the Option Switches. Command selected parameters will be lost. Availability: Supervisor Only Format: /I[/Y] [Enter] Where /Y is a command option used to suppress the "Sure?" prompt. Response: Verbose: "Are You Sure (y/n)?", if Y, memory tes[...]

  • Seite 55

    Response: The Port Parameters Menu is displayed. /S Display Port Status Displays the Port Status Screen, which lists current conditions and parameters for all ports. Normally, the Port Status Screen will not display Port Passwords; the Password column will read either "defined" or "undefined", depending upon whether or not the p[...]

  • Seite 56

    command is invoked, the network connection will be reset without warning, and must then be re-established in order to communicate with the unit via Network. Availability: Supervisor Only Format: /T [Enter] Response: None (NIC Card is reset, Network Connection is broken) /U Save Parameters Sends CMS configuration parameters to an ASCII text file as [...]

  • Seite 57

    Response: Displays port parameters. Example: To display parameters for a port named "SERVER", access the Command Mode from a port with Supervisor Level command capability, and type /W SERVER [Enter] . /X Exit Command Mode Exits Command Mode, When issued at the Net Port, also ends the telnet session. Note that exiting from Command Mode wil[...]

  • Seite 58

    If neither port is set for Modem Mode, DTR output is held high (active). b. When not connected: If the port is set for Modem Mode, upon disconnect DTR output is pulsed for 0.5 seconds and then held high. . If the port is not set for Modem Mode, DTR output is controlled by the DTR Output option (Parameters Menu, Option 74). Upon disconnect, Option 7[...]

  • Seite 59

    Customer Service hours are from 8:00 AM to 5:00 PM, PST, Monday through Friday. When calling, please be prepared to give the name and make of the unit, its serial number and a description of its symptoms. If the unit should need to be returned for factory repair it must be accompanied by a Return Authorization number from Customer Service. WTI Cust[...]