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Refer to the list of supported drivers in section 2.1. AdderLink supports VGA/SVGA/XGA/XGA2 type monitors, but does not support the automatic detection features available with some ‘plug and play’ monitors and video cards. If you have this type of video card and monitor, you should select the video mode manually instead of relying upon the automatic detection feature. The sound quality of the AdderLink Gold’s audio speaker channels is maximised by setting the maximum possible audio output level from your PC. You can then adjust the speaker volume to suit. The sound quality of the AdderLink Gold’s audio microphone channels is maximised by setting the minimum possible audio input level to your PC. 2.5 Configuring the AdderLink The AdderLink is supplied in a default state that is suitable for most applications except that the video compensation needs to be adjusted to match the characteristics of the twisted pair cable. The video only needs to be compensated once during setup as the compensation value is stored by the AdderLink and retained even when the power is off. The AdderLink is configured using the following: 1. Option switches (see section 2.7) The option switches on the side of the AdderLink select the keyboard hotkey combination that is used to access video compensation / configuration mode. They also control some other hardware related functions. AdderLink Installation and Use Page 19 2. Video compensation / configuration mode (see section 2.8) This mode is entered by typing the hotkey combination (selected using the option switches) on the keyboard attached to the XR receiver. Once within video compensation / configuration mode you can adjust the video compensation and select other options using the keyboard. The selected options are saved and stored in the XR unit when you exit compensation / configuration mode. 2.6 Setting the option switches The option switches on the side of the AdderLink XR and XL units are used to select operating options. The switches are continuously read by the AdderLink and may be changed whilst the AdderLink is powered on. The default setting (all switches OFF) is suitable for most installations. The switches are shown in figures 6 and 7 and have the following functions. XR unit - Switches 1 to 5 Reserved – set to OFF position XR unit - Switches 6 to 8 These switches select the hotkey combinations that are recognised by the AdderLink. The chosen hotkey combinations are used to enter compensation / configuration mode, lock the AdderLink, disable the AdderLink’s video and select between local and remote computers on the AdderLink Gold. XL unit – Switch 1 This switch may be used to reset the XL unit without disconnecting the power. In the OFF position the AdderLink will operate normally. In the ON position the AdderLink will suspend all operation and reset itself to the power off condition. Cycling the switch from the OFF position to the ON position and back to the OFF position again will perform a reset without having to disconnect the keyboard lead and power lead. XL unit - Switches 2 and 3 Reserved – set to OFF position XL unit - Switch 4 This switch should normally be set in the OFF position and should only be set ON if you are connecting a laptop computer using a 'Y' cable or adapter. These 'Y' cables and adapters are used to connect a PS/2 mouse and keyboard to the single 6-way AdderLink Installation and Use Page 20 keyboard/mouse port commonly found on the back of laptops. The wiring scheme used on a few of these 'Y' cables confuses the AdderLink into thinking that it is being connected to the computer's serial port and consequently prevents correct operation. When option switch 4 is set to the ON position, RS232 mouse detection is disabled. This enables a computer connected via a 'Y' cable or adapter to be used with the AdderLink without problems. XL unit – Switch 5 If this switch is set to the ON position then the remote unit will go directly into compensation / configuration mode at power on. This enables a password locked XR unit to be reset. See section 3.10 for further details. XL unit - Switch 6 This switch controls the video mode on the AdderLink Gold and has no function on the AdderLink. The video picture from the computer connected to the XL unit may be broadcast to the monitor connected to the XL unit and the monitor connected to the XR unit. Alternatively the video picture may be displayed on only one of these monitors at a time. The video picture is directed to the monitor whose keyboard and mouse most recently had control of the computer that is connected to the XL unit. If this switch is set to the OFF position then the video will be broadcast to both monitors. When set to the ON position, video will be sent to the monitor whose associated keyboard and mouse last had control of the XL end's computer. XL unit - Switches 7 and 8 These switches have no function on the AdderLink. On the AdderLink Gold, the switches select the timeout period for switchover ...

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