Altinex MX2214RM manual Select Input, Auto Switch Mode Button, Stand by / ALL Channels OFF Button

SWITCHERS

The front panel of the MX2214RM provides access to essentially all of the switcher’s capabilities. In addition to standard switching functions, the unit has control and switching functions that could be very useful in a variety of special applications.

4.1 SELECT INPUT

When buttons 1 through 4 are pressed, the corresponding INPUT will be selected and displayed. LED’s on the front and rear panels will light simultaneously to indicate which selection has been made.

4.2 AUTO SWITCH MODE BUTTON

This function is not operational at this time and is reserved for future upgrades.

4.3 STAND BY / ALL CHANNELS OFF BUTTON

This function allows a user to turn OFF all input signals. It is very useful when the MX2214RM Switcher is used in applications where there is a need to turn the display or the source OFF. Press this function key (F2) to switch to a no signal condition. The LED next to the F2 will light to indicate that it is in this mode. To resume input select switching, simply press the desired INPUT.

4.4 RESET BUTTON

This function allows a user to RESET the switcher without unplugging the unit. Press the function key RESET (F3) and hold it for 2 seconds. When you hear a beeping sound, release the key. All of the LED’s will flash simultaneously. The switcher is now reset. All previous defaults, such as power on channel default and other user settings are maintained.

4.5 BEEP ON/OFF BUTTON

This function allows a user to have an audible feedback when buttons are pressed. The factory default is beep ON. However, in some applications, sound may be undesirable. To disable sound, press this function key (F4) and hold it for approximately 2 seconds until a beeping sound is heard. The function is now disabled. To enable it, repeat the same steps. The setting is stored in the memory and is maintained during the power up sequence.

4.6 POWER UP DEFAULT SET

This function allows a user to select the channel that will be ON at power up. To select the default channel, press the selected channel switch and hold it for approximately 2 seconds until you hear a beeping sound. If the unit is turned off and turned on again, the LED of the selected channel should light.

4.7 ANALOG OUTPUT

The analog output of the MX2214RM can be used for controlling several switchers simultaneously. The analog amplifier drives analog output pin 9 on a 9-pin “D” connector. The output can switch from 0 V to approximately 5.0 V. The output impedance of this pin is 100 Ohms and it can sink or source up to 5 mA of current. By using this output, several switchers can operate in gang mode. To do this, the analog output of the master switcher (pin 9) is connected to the analog input of the slave switchers (pin 9). Now, every time a channel is selected on the master switcher, the output voltage of the analog output will be set to switch all other switchers into the same channel. The simplicity of this approach is that only two wires (one to pin 9 and one to ground) are required to connect and control all of the switchers. The selection of channels can also be accomplished by RS-232 on the master switcher with all slave switchers connected through the analog control pin. A maximum of four switchers can be connected in this configuration.

4.8 POWER SUPPLY

The MX2214RM Switcher has 5 V power supply available on pin 8 of the 9-pin “D” connector. This voltage can be used to drive external circuits or as a pull up voltage for open collector type outputs. The total current on this pin should not exceed 150 mA continuous operation or 500 mA for 5 minutes.

4.9 BI-DIRECTIONAL SWITCHING

The MX2214RM Switchers use very high bandwidth relays to provide you with 400 MHz bandwidth. Each input, when not selected, is terminated to 75 Ohms resistor. This is done to make sure that the video lines are always terminated whether a channel is selected or not.

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