SWITCHERS
The front panel of the MX2216RM 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 6 are pressed, the corresponding INPUT will be selected and displayed. LED’s on the front and rear panel 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 MX2216RM Switcher is used in applications when 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 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 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 the 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 back on, the LED of the selected channel should light.
4.7 ANALOG OUTPUT
Analog output of the MX2216RM can be used for controlling several switchers simultaneously. The analog amplifier drives the analog output pin 9 on a
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 2 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
4.8 POWER SUPPLY
The MX2216RM Switcher has 5V power supply available on pin 8 of the
4.9 BI-DIRECTIONAL SWITCHING
The MX2216RM Switcher uses very high bandwidth relays to provide you with a 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.
5
