Tektronix IsoVu TIVM Series, User Manual

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Reference information
Installing the probe tip adapters
Tektronix provides two probe tip adapters to connect the sensor tip cables to
pins on the circuit board. The MMCX-to-0.1-inch (2.54 cm) pitch adapter and
the MMCX-to-0.062-inch (1.57 mm) pitch adapter.
One end of each adapter has an MMCX socket for connection to an IsoVu tip
cable. The other end of the adapter has a center pin socket and four common
(shield) sockets around the outside of the adapter. Notches on the adapters can be
used to locate the shield sockets. The procedure for installing these adapters are
the same, the main difference is the spacing of the pins on the circuit board.
To install the adapters onto the square pins, line up the center of the adapter with
the signal source pin on the circuit board. Use the notch on the adapter to align
one of the shield sockets to the common pin on the circuit board. The following
fi gures show examples of lining up the adapters on the circuit board.
To achieve the best electrical performance, especially the CMRR performance
and EMI susceptibility, place the probe tip adapter as close as possible to the
circuit board.
Figure 29: Lining up the MMCX-to-0.1-inch (2.54 mm) adapter on the circuit board
TIVM Series Measurement System User Manual 39