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SC-2070 Board
Chapter 2
SC-207X Series User Manual
2-6
© National Instruments Corporation
Warning:
Do not connect the SC-2070 board to any board other than a National Instruments
MIO-16 board or the SC-2050 cable adapter board. The SC-2070 board is not
compatible with any other DAQ boards or cable adapter boards. Attempts to use the
SC-2070 board with products for which it is not intended can result in damage to the
SC-2070 board, the DAQ board, or the host computer. National Instruments is
NOT
liable for damages resulting from these connections.
The SC-2070 board uses a 50-pin ribbon cable connector to connect to the 50-pin I/O connector on
either a DAQ board or the SC-2050 cable adapter board. If you are using the SC-2050 cable adapter
board, the SC-2050 connects to the DAQ board with a 50-conductor ribbon cable. The SC-2070 board
then connects to the other 50-pin I/O connector on the SC-2050 board. For more information, see
Chapter 5, Installation and Connections.
Mounting
The SC-2070 board is equipped with metal standoffs so the board can be placed on a workbench near
the host computer. You can use an optional rack-mount chassis, which can be fitted with a flat, acrylic
plastic cover. When the SC-2070 board is mounted in the chassis, the board can be grounded to its
metal standoffs, and therefore to the rack. For more information, see Chapter 5, Installation and
Connections.
Applications
The open component positions on the SC-2070 board make adding signal conditioning components to
the analog input signals easier. Several applications are covered in this section, including
thermocouple readings, filtering, and attenuation.
The figures in this section give examples on a specific input channel. To install the circuit on a
different channel, see Table 2-1 to determine the equivalent component positions for the other
channels.
Soldering and Desoldering on the SC-2070 Board
The applications discussed here require modifications to the printed circuit board, usually in the form
of removing jumpers and adding components. The SC-2070 board is shipped with wire jumpers in the
E and F positions (see Table 2-1 and Figure 2-2). Use a low-wattage soldering iron (20 to 30 W) when
soldering to the board. To desolder on the SC-2070, vacuum-type tools work best. Use care when
desoldering to avoid damaging component pads. Only use rosin-core electronic grade solder. Acid-
core solder damages the printed circuit board and components.
Summary of Contents for SC-207 Series
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