Matrox Iris GT MIL, Installation And Technical Reference, Page: 150 / 256

150 Appendix F: The breakout board
Switch boxes
The switch boxes redirect the signals of your Matrox Iris GT. There are three
switch boxes, labeled SW6 through SW8, on the breakout board. Each switch box
has 4 switches.
Output-to-trigger bypass switch box
The output-to-trigger bypass switch box (SW6) allows you to route a Matrox
Iris GT auxiliary output signal to the Matrox Iris GT trigger signal, and allows
the trigger signal to be grounded when not from a third-party device.
Output pull-up resistor switch box
The output pull-up resistor switch box (SW7) is used when routing a Matrox
Iris GT auxiliary output signal to a Matrox Iris GT auxiliary or trigger input
signal.
Switch Description (ON)
1 Routes the Matrox Iris GT AUX(STB)_OPENC_OUT4 signal to the TRIG_O signal.
Note that if this switch is ON, switch 1 of the output-to-input bypass switch box (SW8[1])
cannot be on.
2 Grounds the Matrox Iris GT TRIG_OPTO_IN0- signal. Note that this is necessary when using
the trigger push button (Trig+), or when switch 1 of this switch box (SW6[1]) is on; otherwise,
by default, the negative opto-isolated trigger signal is floating (that is, it is not connected to
ground).
3 Reserved.
4 Diagnostic switch. Set this switch to OFF unless otherwise directed by technical support. If this
switch is ON, your Matrox Iris GT will not finish booting until it receives a CRLF through the
serial port.
Switch Description (ON)
1 Adds an on-board pull-up resistor to the AUX(STB)_OPEsignal.
2 Adds an on-board pull-up resistor to the AUX(STB)_OPE signal.
3 Adds an on-board pull-up resistor to the AUX(USER)_OPE signal.
4 Adds an on-board pull-up resistor to the AUX(USER)_OPE signal.