FREE ENGLISH IOGEAR GCS1794 (01) PDF USER GUIDE
FREE ENGLISH IOGEAR GCS1794 (01) PDF USER MANUAL
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FREE ENGLISH IOGEAR GCS1794 (01) PDF REFERENCE MANUAL
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What items are included in the package?
The package contains the following items:
- 1 x 2/4-Port HDMI KVMP Switch (GCS1792 or GCS1794)
- 2/4 x HDMI KVM Cables (2 for GCS1792 / 4 for GCS1794)
- 1 x USB to PS/2 Converter
- 1 x Firmware Upgrade Cable
- 1 x Power Adapter
- 1 x Installation Guide
- 1 x Warranty Card
What are the requirements for setting up the KVM switch?
**Console Requirements:**
- A display with an HDMI or DVI input*
- A USB Keyboard and Mouse
- Source devices with HDMI or DVI outputs*
- USB port (if source supports keyboard, mouse or peripheral)
- Analog audio connections for speakers and mic.
How do I install the KVM switch?
Follow these steps for installation:
- Make sure your source devices and display are powered off before you start.
- Plug the power adapter into a power outlet and connect it to the DC power jack on the KVM.
- Connect the HDMI cable from your display to the console HDMI port on the KVM. *If your display has a DVI input instead of HDMI, use an HDMI (F) to DVI (M) Adapter (Model No: GHDMIFDVIM) between your HDMI cable and the display’s DVI connection.
- Connect your USB keyboard and mouse to the console USB keyboard port and console USB mouse port on the KVM. *If you are using PS/2 keyboard and mouse, use the included PS/2 to USB converter. Connect the PS/2 keyboard and mouse to the converter’s PS/2 ports, then connect the converter’s USB plug to the console USB keyboard port on the KVM.
- Connect a set of your HDMI KVM cables from the KVM switch to each of your source devices: connect the HDMI cable end to the HDMI output on the source device and the USB cable end to an open USB port on the source device. Connect the optional analog audio and mic connectors to your source device if your device does not pass audio through the HDMI cable. *If your source device has a DVI output instead of HDMI, use an HDMI (F) to DVI (M) Adapter (Model No: GHDMIFDVIM) between the source device and the HDMI cable. **If your source device does not support USB keyboard, mouse, or peripheral, leave the USB connection unconnected.
- Turn on your source devices.
What do the LEDs on the KVM switch indicate?
The LED indicators have the following meanings:
*Note: Online status is detected by the USB connection from the KVM cable; therefore, if your source device does not support USB, the KVM will not have online status light up as dim orange. When that source is selected, the LED will light up as dim orange instead of bright orange.
| LED | Status | Description |
|---|---|---|
| Online / Selected* | Dim Orange | A device is connected to the KVMP switch but the port is not on focus. |
| Online / Selected* | Bright Orange | The specific port has focus on the KVM (Keyboard, video and mouse). |
| USB Link | Green | The specific port has focus on the USB peripheral sharing ports. |
How can I switch between ports using the front panel pushbuttons (Default Settings)?
Use the front panel pushbuttons corresponding to the desired port as follows (default operation):
| Function | Description |
|---|---|
| Switch all focus (KVM, analog audio and USB) to a specific port | Press and hold the corresponding push button for 2 seconds for the desired port. |
| Switch KVM focus to a specific port | Press the corresponding push button once for the desired port. |
| Switch analog audio focus to a specific port | Press the corresponding push button twice for the desired port. |
| Switch USB focus to a specific port | Press the corresponding push button 3 times for the desired port. |
How can I switch between ports using the front panel pushbuttons (Alternative Settings)?
If alternative pushbutton settings are enabled*, use the front panel pushbuttons corresponding to the desired port as follows:
*Note: See the Hotkey Setting Mode (HSM) section on how to change the front panel pushbutton operation to the alternative settings.
| Function | Description |
|---|---|
| Switch all focus (KVM, analog audio and USB) to a specific port | Press the corresponding push button once for the desired port. |
| Switch KVM focus to a specific port | Press and hold the corresponding push button for 2 seconds for the desired port. |
| Switch analog audio focus to a specific port | Press the corresponding push button twice for the desired port. |
| Switch USB focus to a specific port | Press the corresponding push button 3 times for the desired port. |
How can I switch between ports using keyboard hotkeys?
You can use the following hotkey sequences (default is [Scroll Lock] [Scroll Lock]) to switch focus:
*Note: ‘n’ is an interval that stands for the Port number. ‘k’ stands for KVM focus. ‘s’ stands for analog audio focus. ‘u’ stands for USB focus.
**Note: If the audio is going through the HDMI cable along with the video signal, this hotkey WILL NOT switch the audio focus independently. Instead, the audio will follow the KVM focus.
| Hotkeys | Description |
|---|---|
| [Scroll Lock] [Scroll Lock] [Enter] | Switch all focus (KVM, analog audio and USB) to the next port |
| [Scroll Lock] [Scroll Lock] [n] [Enter] | Switch all focus (KVM, analog audio and USB) to port n* |
| [Scroll Lock] [Scroll Lock] [k] [Enter] | Switch KVM focus to the next port |
| [Scroll Lock] [Scroll Lock] [n] [k] [Enter] | Switch KVM focus to port n* |
| [Scroll Lock] [Scroll Lock] [s] [Enter] | Switch analog audio focus to the next port** |
| [Scroll Lock] [Scroll Lock] [n] [s] [Enter] | Switch analog audio focus to port n* ** |
| [Scroll Lock] [Scroll Lock] [u] [Enter] | Switch USB focus to the next port |
| [Scroll Lock] [Scroll Lock] [n] [u] [Enter] | Switch USB focus to port n* |
| [Scroll Lock] [Scroll Lock] [n] [k] [u] [Enter] | Switch KVM and USB focus to port n* |
| [Scroll Lock] [Scroll Lock] [n] [k] [s] [Enter] | Switch KVM and analog audio focus to port n* ** |
| [Scroll Lock] [Scroll Lock] [n] [u] [s] [Enter] | Switch USB and analog audio focus to port n* |
**Note: If the audio is going through the HDMI cable along with the video signal, this hotkey WILL NOT switch the audio focus independently. Instead, the audio will follow the KVM focus.
How do I activate Auto Scan mode?
You can activate Auto Scan mode using either the front panel push buttons or hotkeys:
*Note: Autoscan Mode activated from the front panel push button scans each port every 5 seconds by default. To use a different time interval, activate Autoscan Mode using hotkeys.
**Note: ‘n’ is an interval between 1 and 99 seconds, representing the desired scanning time for each port.
| Method | Action | Result |
|---|---|---|
| Front Panel Push Button | Press and hold port 1 and port 2 Pushbuttons simultaneously for 2 seconds. | Activates Autoscan mode. It will cycle from port to port every 5 seconds (default).* |
| Hotkeys | [Scroll Lock] [Scroll Lock] [a] [Enter] | Activates Autoscan mode. It will cycle from port to port every 5 seconds (default). |
| Hotkeys | [Scroll Lock] [Scroll Lock] [a] [n] [Enter] | Activates Autoscan mode. It will cycle from port to port every n seconds.** |
**Note: ‘n’ is an interval between 1 and 99 seconds, representing the desired scanning time for each port.
How do I enter Hotkey Setting Mode (HSM) and what can I configure?
To invoke Hotkey Setting Mode (HSM), use the following sequence:
*Note: To exit HSM manually, press [Esc] or [Spacebar].
- Press and hold [Num Lock] ([Clear] key on Mac keyboard)
- Press and release [-]
- Release [Num Lock] ([Clear] key on Mac keyboard)
| HSM Key | Function |
|---|---|
| [h] | Change the HSM invocation keys from [Num Lock] [-] to [Ctrl] [F12]. |
| [t] | Switch port switching hotkey sequence between [Scroll Lock] [Scroll Lock] and [Ctrl] [Ctrl]. |
| [F2] | Enables Mac keyboard emulation. |
| [F10] | Auto-detect the keyboard operating platform (for PC compatible systems). Activates Pass Through Keyboard Mode (keystrokes are sent directly to the computer instead of through the Mac emulator). |
| [F4] | List hotkey settings – invoke this, then open a text editor (like notepad) and use the Paste function to display the current settings. |
| [F5] | USB Reset. |
| [b] | Toggle hotkey beepers on or off. |
| [x] [Enter] | Disable or enable port switching hotkey. |
| [u] [p] [g] [r] [a] [d] [e] [Enter] | Activate Firmware Upgrade Mode – Front panel KVM LED will flash indicating Firmware Upgrade Mode is activated. |
| [r] [Enter] | Restore default settings. |
| [d] | Enable or disable video emulation. |
| [s] | Toggles between default and alternative front panel pushbutton operation settings. (See page 18 in the PDF for alternative settings details). |
| [m] | Enable or disable mouse emulation. |
| [F1] | Reset keyboard and mouse under some special OS’ that do not support USB 2.0. |
How does the Mac keyboard emulation work?
When Mac keyboard emulation is enabled, a PC compatible (101/104 key) keyboard can emulate Mac keyboard functions. Here are the mappings:
*Note: When using key combinations like [Ctrl] [1], press and release the first key (Ctrl), then press and release the second key (1).
| PC Keyboard | Mac Keyboard Equivalent |
|---|---|
| [Shift] | Shift |
| [Ctrl] | Ctrl |
| [Windows Logo Key] | Command (⌘) |
| [Ctrl] [1] | Volume Down |
| [Ctrl] [2] | Volume Up |
| [Ctrl] [3] | Mute |
| [Ctrl] [4] | Eject |
| [Alt] | Alt (Option) |
| [Print Screen] | F13 |
| [Scroll Lock] | F14 |
| [Pause/Break] (Usually near Scroll Lock) | Equals (=) |
| [Enter] | Return |
| [Backspace] | Delete |
| [Insert] | Help |
| [Ctrl] [Windows Logo Key] | F15 |
What are the factory default settings for the hotkeys?
The factory default settings are:
| Function | Default Setting |
|---|---|
| Port Switching Hotkey Sequence | [Scroll Lock] [Scroll Lock] |
| Invoking HSM Sequence | [Num Lock] [-] |
| Auto Scan Interval | 5 Seconds |
| Beeper | On |
| Keyboard Operating Platform | PC Compatible |
| Port Switching Keys (via Hotkey) | Enabled |
| Mouse Emulation | On |
How do I perform a firmware upgrade?
Note: You need to use a computer that is not connected to the KVM for the upgrade process.
- Connect the provided firmware upgrade cable to the firmware upgrade port on the KVM and a serial port on your computer. Connect the power adapter to the KVM and a power outlet.
- Go to http://www.iogear.com to download the latest available firmware or the specific firmware version you wish to use.
- Shut down all computers connected to the KVM.
- Invoke Firmware Upgrade Mode on the KVM using the hotkey sequence: Invoke HSM, then press [u] [p] [g] [r] [a] [d] [e] [Enter]. The front panel KVM LED will flash.
- Extract the downloaded firmware file using WinRAR or compatible software. Double-click the executable file to start the Firmware Upgrade Utility.
- Read the License Agreement in the utility. Click “I Agree” and then “Next” to continue, or “Cancel” to exit.
- Choose the correct KVM model (GCS1794/92) from the “Device List” in the utility and click “Next”. The utility will verify the KVM connection. Checking the “Check Firmware Version” checkbox is optional.
- If you checked “Check Firmware Version” and the KVM’s current firmware is newer than the upgrade file, a prompt will ask if you want to continue. Click “Yes” to proceed with the downgrade/re-flash or “No” to cancel. If you did not check the box, the upgrade will proceed automatically regardless of the current version.
- The upgrade process will begin. Wait for the “Status Messages” window to show “Firmware upgrade OK”.
- Click “Finish” to complete the process.
- The KVM will reset itself and will be ready for use after the reset.
What should I do if the firmware upgrade fails?
If the “Status Messages” window in the Firmware Upgrade Utility does not show “Firmware upgrade OK”, the upgrade has failed. Follow these steps:
- Unplug the DC power connector from the KVM.
- Carefully remove the housing of the KVM.
- Locate the jumper pins on the main board labeled J11 (for GCS1792) or J17 (for GCS1794).
- Use a jumper cap to short these two pins together.
- Plug the DC power connector back into the DC jack on the KVM. This will restore the KVM with its factory default firmware.
- Perform the firmware upgrade procedure again (Steps 4-10 from the “How do I perform a firmware upgrade?” question).
- Once the firmware upgrade is successfully completed (shows “Firmware upgrade OK” and you click “Finish”), unplug the DC power connector from the KVM again.
- Remove the jumper cap from the J11/J17 pins.
- Carefully put the housing back together.
- Plug the DC power connector back into the KVM. The KVM will reset and be ready for use.
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