User's Manual

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Merlin II Protocol Analyzer User’s ManualCATC SW Version 2.30
other devices. the EXT OUT connector can be used to export trigger signals
to trigger other devices such as oscilloscopes or logic analyzers or to export
the external clock for clock calibration using a frequency counter (see
Appendix A).
Drive strength for all outputs is about 30mA high (@2V) and 60 mA low
(@0.5V). Inputs can handle 0 to 5.5V. Inputs above 2V are detected as logic
high; inputs below 0.8V are detected as logic low.
The analyzer connects to the first of three mini DIN ports ("Port 1") on the
Breakout Board. Each signaling pin is isolated by a 100Ω series resistor and
a buffer inside the Analyzer unit.
Please make sure that the jumpers JP1 and JP2 on the breakout board are set
to Position 1.
Connecting the Breakout Board
The photograph above shows a fully connected Merlin II.
The following connections can be seen: Left: Power supply connected to
the power port on the analyzer. Center: Mini DIN cable leading to Port 1
of the breakout board. USB cable leading to an offscreen PC. Right: BNC
cable leading from the Breakout board to an offscreen device on the left.
Mini DIN connectors on the back of the Break-out board.
Merlin II with power supply (left) and Breakout board (right).