External Device Connection

External Device Connection

Last updated: March 27, 2009

This section is only applicable to the lab application and to a test application with the required feature license.

Description

The test set supports to connect 2 or 3 test sets together over an IP network to perform various specific measurements. There are two basic types of features that use an external test set connection.

For example, you can perform multi-carrier measurements when the Protocol Rel is B (1xEV-DO-B) , in which up to 3 test sets work together to generate a single cell. Besides, external device is also used in Multi-unit Synchronization between multiple test sets, in which case one test set acts as a Sync Server and the other(s) as Sync Client at a time.

You have to establish a stable unit-to-unit (testset-to-testset) connection before initiating a feature that requires such a connection. To minimize the chances of data lost, it is recommended that the test sets be connected via a hub or directly via a cross-over cable rather than through a gateway or WAN link.

Configurable Parameters

   
NOTE
For multi-unit synchronization, see Multi-unit Synchronization for detailed configuration.
   

For multi-carrier measurement, at the beginning of the multi-carrier setup, external 8960 IP address must be set prior to multi-carrier connection or Automatic MC Setup Execute, see Multi-carrier Multi-unit (MCMU) Setup .

External 8960 IP Address

External 8960 IP Address sets the IP address of an external test set that this unit may connect to or communicate with.

   
NOTE
External 8960 IP Address is also used by features other than the external connection, e.g. Multi-unit Synchronization .

External 8960 IP Address X is not allowed to be changed when an external connection is present.

   

Connect To External 8960

   
NOTE
Connect To External 8960 can only be performed on the Main unit, see Multi-carrier Multi-unit Setting Interactions .
   

This action initiates the connection from the Main unit to the Aux unit which is indicated by External 8960 IP Address .This is only allowed to be executed when the data connection status is Idle or Session Open. Prior to this action, make sure that the Data connection Status is stable.

When Connecting to external 8960 is successfully performed, External Device Conn Status in LAN Connection Information area turns to Connected and the Connected Device IP Address will show the IP address of the external 8960 1. For the external device 8960 2, External Device 2 Conn Status shows the status in the same way.

   
NOTE
When Connecting to external 8960 is successfully performed, the test sets are in a state of Multi-Carrier Multi-Unit mode (MCMU mode), in this mode, the connection-initiating unit works as the Main unit and the unit being connected to works as the Aux unit, and the parameters or results on the units will have a certain restriction about whether they can be set on a specific unit, see Multi-carrier Multi-unit Setting Interactions for the details of setting interactions between multi-unit.
   

Disconnect From External 8960

This action disconnect the Main unit from the connected Aux unit(s) which is indicated by External 8960 IP Address . This is only allowed to be executed when the data connection status is Connected. For Manual Operation, see How Do I Disconnect From External 8960? .

   
NOTE
When disconnecting from external 8960 is successfully executed, the test sets are no longer in the MCMU mode.
   

External 8960 conn Setup

  • External Device Connection Allowed

    External Device Connection Allowed is used to allow or not allow an external test set to control or connect to this unit and must be set to On if another external test set is trying to connect or control the test set. Changing this parameter will not cause a disconnection with the external device.

    • If the External Device Connection Allowed is set to On, the test set can be connected to external test set(s).
    • If the External Device Connection Allowed is set to Off, the test set will not allow an external control connection request from another unit.

   
NOTE
You must set External Device Connection Allowed to On on the associated Aux unit when performing Connect To External 8960 from the Main unit to that Aux unit, or the connection will be rejected.
   

GPIB Command: SYSTem:COMMunicate:LAN:EXTernal:PERMitted