Q.seriesGantner Instruments Test & Measurement GmbH 334 Connecting the modules → Connecting interfacesExampleSelected new IP address for the Test Controller: 192.168.169.85Possible PC IP address: 192.168.169.10Subnet masks of the PC and module: 255.255.255.0TipAlternatively, you can also use the wizard for the initial operationin the test.commander program.Section 6.2, Ethernet on the PC on Page 110 contains furtherinformation about the use of Ethernet addresses and subnetmasks.4.4.4 Using the RS-232 interface of Q.gate or Q.pacThe RS-232 interface is used for the output of protocol informa-tion and for setting the IP address if this is not possible else-where.The RS-232 interface of the Q.gate Test Controller is locatedbelow the USB interface at the front. For the link to a PC yourequire the supplied cable with the 3.5 mm stereo jack plug.Fig. 4-9 Pin assignment for RS-232 on the jack plug.The RS-232 interface of the Q.pac Test Controller is located onthe underside (9-pole SUB-D socket with standard pin assign-ment).Procedure Setting an Ethernet address (IP address) via RS-2321. Make sure that the current version of the test.commandersoftware is installed on your PC.You will find the current version in the download section ofour home page. If necessary, install the current version; referto Section 5.1 on Page 80.2. Start the software.3. Using the menu Utilities > Controller serial terminal callthe dialog for finding Test Controllers.4. Specify the required IP address (IP address), the subnetmask (Subnet mask) and – if necessary – the gatewayTxGND,GroundRx