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Magnum 3000 Stackable Hubs                                   Installation and User Guide (07/06)

 

 

17 

www  GarrettCom  com

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3.0   Installation and Operation

 

Before installing the equipment, it is necessary to take the following precautions: 
1)   If the equipment is mounted in an enclosed or multiple rack assembly, the 
environmental temperature around the equipment must be less than or equal to 50

°

C. 

2)   If the equipment is mounted in an enclosed or multiple rack assembly, adequate air flow 
must be maintained for proper and safe operation. 
3)   If the equipment is mounted in an enclosed or multiple rack system placement of the 
equipment must not overload or load unevenly the rack system. 
4)   If the equipment is mounted in an enclosed or multiple rack assembly, verify the 
equipment’s power requirements to prevent overloading of the building/s electrical circuits. 
5)   If the equipment is mounted in an enclosed or multiple rack assembly verify that the 
equipment has a reliable and uncompromised earthing path. 
6) If  the intra-building wiring (cabling) is involved with this product(NEBS), then it is 
recommended to have shielded cable and the shield is grounded at both ends. 
7)

 

This equipment is for installation only in a Restricted Access Location (dedicated 

equipment room service closet and the like) in accordance with the National Electrical 
Code. 

 

 

3.1 

Connecting Ethernet Media

 

 

The Magnum 30000 Hubs are specifically designed to support all Ethernet 

media types via the Bonus Port options.  There is a family of Port Modules (PMs).  The 

procedures for connecting each media and connector type are as follows: 

3.1.1 

Connecting Twisted Pair (RJ-45, Unshielded or Shielded)

 

 

The following procedure describes how to connect a 10BASE-T twisted pair 

segment to the RJ-45 port on the front panel of the 3000 hub or to the RPM-TP or BPM-

TP of the 3000X or bonus port.  The procedure is the same for both unshielded and 

shielded twisted pair segments. 

 

1.    Using standard 10BASE-T media, insert either end of the cable with an RJ-45   

plug into the RJ-45 connector. Note that, even though the TP connector is 
shielded, either unshielded or shielded 10BASE-T cables and wiring may be 
used. 

2.   Connect the other end of the cable to the corresponding device. 
3.    When proper connection and power have been established, the port’s LINK LED 

will illuminate GREEN. 

 

NOTE: 

The Magnum

 RPM-TP

 and 

BPM-TP

 are equipped with a cross-over slide 

switch to accommodate repeater-to-repeater connections without special cross-
over connectors.  Set the slide switch to the “down” position for normal twisted 
pair cable segments from the hub port to a user device. Set the slide switch to 
the “up”  position for cascaded or up-link segment connections to another 
repeater or hub in the network.  Verify proper switch position by noting that the 
port’s LINK LED will illuminate when proper link is established. 

 

 

 

 

Содержание Magnum 3000

Страница 1: ...www GarrettCom com Magnum 3000 Stackable Hubs Installation and User Guide ...

Страница 2: ...itch are trademarks and Personal Hub is a registered trademark of GarrettCom Inc Important The Magnum 3000 Stackable Hubs family contains no user serviceable parts Attempted service by unauthorized personnel shall render all warranties null and void If problems are experienced with Magnum 3000 Stackable products consult Section 6 Troubleshooting of this User Guide Copyright 2006 GarrettCom Inc All...

Страница 3: ...iate frequency energy and if not installed and used properly that is in strict accordance with the manufacturer s instructions may cause interference to radio communication It has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of FCC rules which are designed to provide reasonable protection against such i...

Страница 4: ...ed in Specifications R03 01 Change the company s name to GarrettCom Inc formerly it was Garrett Communications There are no changes made to the content material at this time R3 99 This revision revises the appendices covering 48V power options R10 98 This revision separates the Magnum 3000 hubs manual from the 3000X Concentrator manual and revises the appendices covering 48V power options R9 97 Th...

Страница 5: ...6 Features and Benefits Magnum 3024 and 3012 Hubs 15 2 7 Applications 16 3 0 INSTALLATION AND OPERATION 17 3 1 Connecting Ethernet Media 17 3 1 1 Connecting Twisted Pair RJ 45 Unshielded or Shielded 17 3 1 2 Connecting ThickNet 10BASE5 AUI 18 3 1 3 Connecting ThinNet 10BASE2 BNC 18 3 1 4 Connecting Drop Cable 10BASE5 DTE 18 3 1 5 Connecting Fiber Optic 10BASE FL and FOIRL 18 3 1 6 Connecting Fiber...

Страница 6: ...ling the Embedded Agent Board MB 36 5 4 Agent Configuration Embedded Agent and Agent Box Versions 39 5 4 1 Automatic Agent IP Address Configuration 40 5 4 2 Manual IP Address Configuration 40 5 4 3 Other Convenience Commands 43 6 0 TROUBLESHOOTING 44 6 1 Before Calling for Assistance 44 6 2 When Calling for Assistance 45 6 3 Return Material Authorization RMA Procedure 45 6 4 Shipping and Packaging...

Страница 7: ...ts can be connected in strings Mixed Media Fiber Hub 16 port Stackable 10 100 auto sensing Dual Speed 8 port and 16 port Stackables 10 100 auto sensing Stackable Hubs SNMP Optional 10Mb series and 100Mb series both w optional port modules Personal Switches 10 100Mb 8 port dual speed Auto negotiable with fiber option Personal Hubs 100Mb or 10 100Mb 8 port with two switched ports 1 fiber built in Pe...

Страница 8: ...5 10BASE2 10BASE FL FOIRL and DTE Operating Environment Ambient Temperature 25ºF to 120ºF 5ºC to 50ºC Storage Temperature 40ºF to 185ºF 40ºC to 85ºC Ambient Relative Humidity 5 to 95 non condensing Altitude 200 to 13 000 Ft 60 to 4000 m Conformal coating option Request quote Port Connector Types RJ 45 Shielded 8 Pin Female Note Shielded 10BASE T connectors accept either unshielded or shielded wiri...

Страница 9: ... 0 in x 17 0 in x 1 75 in 22 9 cm x 43 2 cm x 4 45 cm Weight Model 3024 5 0 lbs 2 3 Kg Model 3012 and 3000 AGT 4 0 lbs 1 8 Kg Cooling method Models 3024 3012 3000 AGT Convection except 3012 and 3024 w embedded agent Fan cooled internal 7cfm LED Indicators on Chassis Front PWR Power Green LED steady on when AC power is applied LINK Models 3024 3012 Per RJ 45 port Steady On when twisted pair link is...

Страница 10: ...ons up to 10 0Km The RJ 45 connector is shielded it accepts RJ 45 eight pin plugs for unshielded and shielded twisted pair wiring Internal termination switch for BNC no T connector is required MDI X Media Dependent Interface Crossover switch for RJ 45 uplink no crossover cable is required 1 2 Specifications Bridge Port Modules BPMs Bonus Ports BPM Type BNC AUI Fiber TP Connector Type BNC f DB 15 f...

Страница 11: ...ion switch Magnum RPM TP Module w 1 shielded female RJ 45 connector up link switch Magnum RPM AUI Module with 1 AUI DB 15 female connector with slide lock Magnum RPM DTE Module with 1 DTE DB 15 male connector with lock posts Magnum RPM FST Module w mm Fiber ST twist 10BASE FL dual connector Magnum RPM SMF Module w single mode Fiber connector Magnum BPM BNC Local Bridge Module with 1 BNC connector ...

Страница 12: ... 3024 Base Unit 1 AC Power Cord U S and other 115 vac only 1 Set of metal Ears for optional rack mounting 1 Inter Repeater Bus IRB ribbon cable with connectors 1 Installation and User Guide 1 Product Registration Card Remove the items from the shipping container Be sure to keep the shipping container should the unit need to be re shipped at a later date To validate the product warranty please comp...

Страница 13: ...isted pair media An additional rear mounted bonus port may be configured for any media type using a Magnum Port Module PM for applications such as connecting to a backbone up link and segment isolation Only 1 75 4 45 cm high the compact Magnum 3000 Hubs economize on rack and wiring closet space Status indicator LEDs consist of Power On PWR for the unit and Link Partition LINK and Receive RX for ea...

Страница 14: ...have an Inter Repeater Bus IRB connector on the right side The IRB interconnects stacked units with a shielded ribbon cable enabling all stacked Magnum 3000 units to operate as a single repeater There are two 34 pin IRB connectors on each unit the bottom IRB connector which is used to daisy chain the IRB to the stacked Magnum 3000 unit below unused on bottom unit in a Magnum 3000 stack and the top...

Страница 15: ...agent 2 3 2 Segmenting a Magnum 3000 Stack with a Special Segmenting Cable Magnum 3000 Stackable Hubs are typically stacked as described in Section 2 3 1 However it may be desirable to stack the 3000s so that they operate as separate repeater units This will normally be done to manage several separate hubs or small stacks with a single 3000 AGT SNMP Agent box In this situation single units or seve...

Страница 16: ... hubs in a managed stack are individually segmented and a switching hub is used as the traffic center Figure 2 3 2b SRC cables segment a managed stack for connection to switching hub ports This special configuration provides high bandwidth for the users on each 3024 hub but also provides the efficiency of a single SNMP agent for all of the 3024s Note also that Magnum 3012 units can be used with th...

Страница 17: ...ts are unmanaged or dumb See the illustration in Figure 2 3 3a Switches one through six are set at the time of installation to form a binary number from 1 to 20 The switch positions may be moved using an instrument such as a small screw driver a pencil eraser or a fingernail See Section 5 3 for a table of switch settings vs Group address numbers The units in a managed stack should have Group addre...

Страница 18: ...nged in any order physically and logically for Group numbering purposes Switch settings for Group addresses of zero and from 21 to 31 are not recognized by the NMS software in a managed system and the use of such Group addresses is discouraged Switch 7 of the eight position DIP switch is no longer used In previous versions of the product line it allowed the use of a PC based SNMP AGENT Switch 8 of...

Страница 19: ...ules BPMs to implement an extra port The optional bonus port may be used for any purpose such as an Ethernet coax backbone connection or as a micro bridge segment isolation unit The RPMs support any of six different media types BNC ThinNet AUI ThickNet DTE male AUI ST SC multi mode Fiber SMF single mode Fiber and RJ 45 UTP and STP The BPMs support any of four media types BNC AUI ST and RJ 45 UTP a...

Страница 20: ...onfigured in the field by a trained technician NOTE When adding a Port Module to the Bonus Port slot in the field it is necessary to have a Port Module connector cable part number PM CBL available as a spare part from GCI in addition to the desired PM See Figure 2 5a and 2 5b Figures 2 5a and 2 5b show the internal layout of the Magnum 3012 and 3024 respectively When installing a PM into the Bonus...

Страница 21: ...nt Figure 2 5d Magnum 3024 internal layout with configured Bonus Port CBL AUI When the RPM AUI is factory configured as a bonus port it is implemented with CBL AUI an AUI connector with a ribbon cable to the 16 pin header J1 AUI on the main board Shown in both figure 2 5a and 2 5b Since the AUI functionality is build onto the main board using CBL AUI is identical to the RPM AUI GCI recommends that...

Страница 22: ...igured with an RPM of any media type providing flexible connectivity to backbones or other devices and nodes Optional Bridge Port Modules The Magnum 3000 Stackable Hubs can be optionally configured with a BPM as the bonus port BPMs contain a miniature self learning local bridge module capable of filtering and forwarding packets at full Ethernet wire speed A BPM may be used to bridge isolate a loca...

Страница 23: ...012 for 56 PC users in Wing A A second segment of Fiber 10BASE FL cable provides a link from the Wing A Magnum stack to an additional 22 users in Wing C The optional future SNMP based network manager can be connected to any unit of the Magnum stack in Wing A A single SNMP agent may be added to the Wing A stack as a future enhancement for use with network management software Also note that BPMs in ...

Страница 24: ... 3 1 Connecting Ethernet Media The Magnum 30000 Hubs are specifically designed to support all Ethernet media types via the Bonus Port options There is a family of Port Modules PMs The procedures for connecting each media and connector type are as follows 3 1 1 Connecting Twisted Pair RJ 45 Unshielded or Shielded The following procedure describes how to connect a 10BASE T twisted pair segment to th...

Страница 25: ... connection The PM BNC port is specially equipped with an internal termination switch on the front of the card see Section 4 1 for a description of this switch This eliminates the need to use a tee connector when the BNC cable is ending at the connection to this PM Some applications may require a tee connector used as a tap to allow the 10BASE2 coax segment to continue on past the PM BNC connectio...

Страница 26: ... connection the normal cause is improper cable polarity Swap the fiber cables at the Port Module connector to remedy this situation 3 1 6 Connecting Fiber Optic SC type Snap On The same five step procedure as for fiber ST type applies to FOIRL and 10BASE FL applications using an RPM SC card used with SC type fiber connectors Follow the five steps as described in the Section 3 3 5 above When connec...

Страница 27: ...he 100Mb fiber segment must operate in full duplex FDX mode i e the full duplex factory default setting for 100Mbps fiber ports must be used and The worst case OPB of the fiber link must be greater than the fiber cable s passive Attenuation Attenuation Cable loss LED aging loss Insertion loss safety factor 3 1 9 Rack mounting Installation of a Magnum 3000s Hub in a 19 rack is a simple procedure Th...

Страница 28: ...ecified by the manufacturer B Reduced Air Flow Installation of the equipment in a rack should be such that the amount of air flow required for safe operation of the equipment is not compromised C Mechanical Loading Mounting of the equipment in the rack should be such that a hazardous condition is not achieved due to uneven mechanical loading D Circuit Overloading Consideration should be given to t...

Страница 29: ...er Be sure to keep the shipping container should you need to ship any of the PMs separately at a later date In the event there are items missing or damaged contact your supplier If you need to return the unit use the original shipping container if possible Refer to Chapter 5 for specific return procedures 4 2 Product Description Port Modules An important feature of the Magnum 3000 Stackable Hubs i...

Страница 30: ...terminated When the switch is in the UP or left side position the BNC port requires a tee connector not supplied and a 50 ohm terminator for proper termination Certain applications may require a tee connector used as a tap to allow the 10BASE2 coax segment to continue on past the RPM BNC connection The RPM BNC module includes one partition PART and one receive RX LED which are visible beside the c...

Страница 31: ...bove NOTE When the RPM AUI is factory configured as a bonus port it is implemented as an AUI connector with a ribbon cable to special pins on the main board The functionality of this is identical to the RPM AUI The maximum transmission distance between a backbone transceiver equipped with an AUI connector and an RPM AUI port will vary When an AUI cable is used to connect the Magnum RPM AUI directl...

Страница 32: ...ld conductive shell 9 Control In Circuit B NOTES 1 Voltage Plus pin 13 and Voltage Common pin 6 use a single twisted pair in the AUI cable 2 Pins 4 8 11 and 14 may be connected to pin 1 4 2 3 RPM DTE The Magnum RPM DTE is a module equipped with a 15 pin male DTE connector with lock posts The RPM DTE is a mating connector for the RPM AUI which has a 15 pin female connector and slide locks The pin a...

Страница 33: ...ire an external transceiver device In addition to Partition PART and Receive RX LEDs a LINK LED indicates proper connectivity with the remote device NOTE The RPM FST FSC circuit board contains a six pin jumper which controls the intensity of the transmitted signal By default the jumper is placed across pins 1 and 2 The jumper may be set as follows to accommodate distances of up to 4 km JUMPER ACRO...

Страница 34: ...es of up to 10 Km The RPM SMF includes full transceiver functionality and does not require an external transceiver device This module is equipped with PART RX and LINK LEDs identical to those of the RPM FST To distinguish the single mode RPM SMF from the multi mode Magnum RPM SMF RPM FST the label Sgl M is at the top of the faceplate of the RPM SMF As an additional indicator a multi mode TX port e...

Страница 35: ...ith a Media Dependent Interface Crossover MDI X slide switch to allow for cascaded connections This feature eliminates the need for a special twisted pair crossover cable With the switch in the UP position the RPM TP port is used for cascaded and up link connections i e a connection to another repeater or hub or concentrator typically When used for segments going to workstations and other user dev...

Страница 36: ...connector This BPM is self learning and filters and forwards packets at full Ethernet wire speed This module is used for 10BASE2 connections and is designed to isolate the local segment i e the local nodes connected to the Magnum unit housing the BPM internally from the connecting network i e the nodes of external users and devices connected through the BPM s media connector The BPM BNC module is ...

Страница 37: ...in Table 3 2 2 of Section 3 2 2 4 2 10 BPM FST The Magnum BPM FST is a multi mode fiber optic local bridge module equipped with a dual ST type connector It is self learning and filters and forwards packets at full Ethernet wire speed When used for 10BASE FL segments this module supports fiber optic transmission distances up to 2000m For FOIRL applications it supports fiber segments of up to 1000m ...

Страница 38: ...e Crossover MDI X slide switch to allow for cascaded connections This feature eliminates the need for a special twisted pair crossover cable For MDI X switch details refer to the RPM TP section 3 2 7 The BPM TP will support 10BASE T unshielded twisted pair wiring UTP environments with maximum segment distances up to 100m 325 ft or shielded twisted pair wiring STP of 150m 500 ft This module is desi...

Страница 39: ...e SNMP agent option and for large stacks Magnum SNMP agents support all standard basic SNMP commands GetRequest GetNextRequest GetRespose SetRequest and Trap and allow monitoring and changing of the target device s configuration and parameters as well as reporting the device alarms from a network management station 5 1 1 Embedded SNMP Agent Model 3000 MB The embedded Magnum SNMP agent is a daughte...

Страница 40: ...g the agent box unit to be installed at the bottom or top of a stack using one IRB connector or to be inserted into the middle of a stack using two IRB connectors The IRB cable connectors are made with notches keys to insure a proper connection The agent logically resides on the IRB and will not be visible to network management software packages as a separate port or user For network integrity the...

Страница 41: ...understanding why a port is not receiving packets The Magnum SNMP Agents Address Tacking MIB extensions allow the LAN manager to poll for the source address of the most recent packet received on an individual port as well as the number of times the source of the port s packets has changed This feature is useful in the compilation of network traffic statistics since the LAN manager is able to see n...

Страница 42: ...TRIBUTE GET Resource Info ATTRIBUTE GET Group ID ATTRIBUTE GET Group Port Capacity ATTRIBUTE GET Port Map ATTRIBUTE GET Port Map Change NOTIFICATION Port ID ATTRIBUTE GET Port Admin State ATTRIBUTE GET Auto Partition State ATTRIBUTE GET Collisions ATTRIBUTE GET Readable Frames ATTRIBUTE GET Readable Octets ATTRIBUTE GET Frame Check Sequence Error ATTRIBUTE GET Alignment Error ATTRIBUTE GET Frame T...

Страница 43: ...ence For one Magnum 3000 stack which may be from one to twenty units and may be any combination of 3024 and 3012 units only one SNMP agent is required and only one SNMP agent may be in use at any given time 5 3 Installing the Embedded Agent Board MB The embedded agent board Model 3000 MB is normally factory installed The procedure for installing the Magnum 3000 MB in the field is a moderately comp...

Страница 44: ...the Magnum 3024 or 3012 hub as shown in the illustration Figure 4 3c below the Embedded Agent Board mounts on top of the other printed circuit boards in the left rear area of the unit Three screws with stand offs hold it firmly in place in the correct position Figure 5 3b Magnum 3024 Top View with Cover Off The Magnum SNMP embedded agent daughter board Figure 4 3d connects into the DB 9 connector ...

Страница 45: ...m 3024 3012 On the back of Magnum 3000 Stackable hubs is an eight position DIP switch The first six positions are used to identify each unit in binary code as a Group address Switches 7 and 8 are not used Figure 5 3d Magnum 3024 and 3012 Rear View For managed stacks the unit configured with the embedded SNMP agent in it should be set to the 1 Group address The AGT agent box unit if used in a stack...

Страница 46: ...ack to operate as one repeater managed by one SNMP agent The NMS display will show the stack units arranged in sequence according to the Group The SNMP standard defines the term Group for data collection and control operations It is desirable to use Group Address 1 for the Magnum 3024 or 3012 unit which houses the embedded agent Switch 7 and Switch 8 are not used See also Section 2 3 3 Address Swi...

Страница 47: ...actory permitting the unit or stack when new to automatically go into operation as a stand alone network For more complex networks where the IP address is to be set from a server on an existing network set the NVRAM IP address to a blank using the procedure in Function Listing Address below Then at power up when the agent software program does not find an IP address it will try to get configuratio...

Страница 48: ...ER Communities access S Allow Set operations Managers list of IP addresses and or names D ISPLAY Display whole configuration E XIT Exit configuration G ATEWAY IP SUBNETIP MASKIP Gateways M ANAGER IP NAME PORT COMMUNITY Managers N AMESERVER IP NAME Name Servers S UBNETMASK IP Subnet mask end of terminal screen illustration Command or Function Listing 1 ADDRESS A DDRESS IP NAME The Address command i...

Страница 49: ...ion information will appear 4 EXIT To exit from the configuration menu type E Cr Example E Cr 5 GATEWAY G ATEWAY IP SUBNETIP MASKIP Cr Used to set the gateway IP address and mask Up to 10 gateways may be set Example G 3 45 9 0 112 255 255 255 0 255 0 0 0 Cr 6 MANAGER M ANAGER IP NAME PORT COMMUNITY Used to set the number of network manager IP addresses and the community to which TRAPS should be se...

Страница 50: ...e time and date The time and date do NOT reside in NVRAM and will be lost at power down From the prompt type T mm dd yy hh mm Cr Example T 11 12 93 11 45 Cr sets the date and military time To display the version and Ethernet physical address from the prompt type V Cr On the terminal a message with version number and information about the processor system controller Ethernet controller and physical...

Страница 51: ...ing the unit refer back to the Installation Section of the applicable chapter of this manual Also check to make sure that the various components of the network are interoperable 2 Check the cables and connectors to ensure that they have been properly connected and the cables wires have not been crimped or in some way impaired during installation About 90 of network downtime can be attributed to wi...

Страница 52: ... problem Any changes to system administration procedures should all be noted in this record 6 3 Return Material Authorization RMA Procedure All returns for repair must be accompanied by a Return Material Authorization RMA number To obtain an RMA number please use this URL https rma garrettcom com rma rma_request_noaccount php to fill out the form Please have the following information readily avail...

Страница 53: ...ner 3 GarrettCom is not responsible for your return shipping charges 4 Ship the package to GarrettCom Inc 47823 Westinghouse Dr Fremont CA 94539 7437 Attn Customer Service APPENDIX A WARRANTY INFORMATION GarrettCom Inc warrants its products to be free from defects in materials and workmanship for a period of three 3 years from the date of shipment by GarrettCom During this warranty period GarrettC...

Страница 54: ...s 48VDC 24VDC and 125VDC models are identical to those listed in the main manual B2 0 48VDC 24VDC 125VDC POWER OPTION THEORY OF OPERATION The 48VDC 24VDC 125VDC power options are designed using diodes inside on each DC power input line behind the two external power connection terminals so that the power from an external source can only flow into the hub This allows the 3000s to operate only whenev...

Страница 55: ...ON This section describes the installation of the 48 VDC 24VDC 125VDC power source leads to the 48 VDC 24VDC 125VDC power terminal block on the Magnum 3000 hubs see figure at right Figure B4 1 48VDC Terminal Block on Magnum 3000 hubs In this picture the 48VDC terminal block on the Magnum 3000s is located on the rear of the unit and is equipped with three 3 screw down lead posts It is similar for 2...

Страница 56: ...r the products standard model Example Magnum 3012 48VDC Similarly to order the optional 24VDC or 125VDC industrial specific power supply factory installed add a suffix of 24VDC or 125VDC after the product s standard model Example Magnum 3024 24VDC or 3012 125VDC B7 0 TROUBLESHOOTING Please refer to Section 6 0 APPENDIX C Internal DC Dual Source Power Option C1 0 SPECIFICATIONS FOR MAGNUM 3000S HUB...

Страница 57: ...E OPTION THEORY OF OPERATION The Dual Source DC power option is designed using diodes inside of the chassis on each DC power input line A diode is placed in each of the four input lines behind the four external power connection terminals so that power from an external source can only flow into the unit This allows the unit to operate whenever DC power is correctly applied to either or both of the ...

Страница 58: ...minal to suit the customer s use Before connecting hot lines to the Terminal Block of 48VDC 24VDC or 125VDC always use a digital voltmeter to measure the output voltage of the power supply and determine the lead which is more ve Potential The more ve voltage lead from 48V or 48V Power supply must be connected to the post labeled The connection procedure is straightforward Simply connect the DC lea...

Страница 59: ... model or Dual Src48V SWITCH for the model with the ON OFF switch Similarly to order Dual Src24V or Dual Src125V add it as a suffix following the product model Also order for Regular or Manual Switch as mentioned above Example Magnum 3024 24VDC or Magnum 3012 125VDC Dual Src24V for regular model with no ON OFF switch or Dual Src125V SWITCH for the model with the ON OFF switch C7 0 OPERATION Operat...

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