Martinsound MonitorMAX, User Manual, Page: 12 / 14

Setting Up MonitorMAX Talkback
External Talkback Switch
MonitorMAX provides for 2 separate external talkback switches with independently assignable
functions. The implementation of either switch requires only two wires (digital ground and sense
TB1 or TB2) from the Logic DB-9 connector. Talkback is activated when either external TB sense
is switched to ground. The switch functions are determined by the program menu settings shown
below.
Talkback Options
Press Enter to open the program menu, and turn the Monitor knob to get to the TB Options
page. Continue to turn the Monitor knob and select the first item, “Front Panel TB”. The factory
default is for the talkback to be sent to Cue when the Talkback switch on the MonitorMax
controller is pressed. Pressing the
Enter key will toggle through the 4 possible selections (Cue,
Mon, Both, or None).
Turn the Monitor knob to select “External TB1” or “External TB2”. These represent optional
external talkback switches connected through the DB-9 Logic I/O port on the MonitorMax back
panel (see pinout). These settings specify where the talkback will be routed when the external
switches are activated. Pressing the
Enter key will toggle through the 5 possible selections (Cue,
Mon, Both, Alt only, or None). Press the Exit key to return to operation mode.
Talkback Active
External functions can be activated when the front panel talkback switch on MonitorMAX is
pressed. A +5 Volt logic high is present on pin 9 of the DB-9 Logic connector until the Talkback
switch is pressed, it then goes to logic low until the switch is released.
A +5 Volt power source (VCC) for powering opto-isolated logic inputs (such as with MultiMAX) is
provided on pin 8 to work in conjunction with Talkback Active.
Dim and Mute
Both Dim and Mute functions can be switched externally in the same way as TB1 and TB2, using
a simple switch closure to logic ground.
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