National Instruments NI TB-2644 Installation Instructions Manual

INSTALLATION INSTRUCTIONS
NI TB-2644
8 × 32 2-Wire or Dual 8 × 32 1-Wire Matrix Terminal Block
for the NI PXI-2532
Introduction
Note Refer to the
assemblies.
Connecting Ribbon Cables
The NI TB-2644 terminal block configures your NI PXI-2532 as an 8 × 32
2-wire matrix or dual 8 × 32 1-wire matrix. The NI TB-2644 has ribbon
cable headers to connect signals to the switch, and it provides optional
isolation resistors to protect the reed relays from capacitive loads.
Refer to the NI Switches Getting Started Guide to determine when to install
the terminal block.
Make sure you have the following:
• NI TB-2644 terminal block
• 1/8 in. flathead and #1 Phillips screwdrivers
• Two 34 conductor, 28 AWG, .050 in. pitch ribbon cable assemblies
(not included)
• One 16 conductor, 28 AWG, .050 in. pitch ribbon cable assembly
(not included)
Accessories section for information about ordering the appropriate cable
To connect ribbon cables to the terminal block, refer to Figures 1 and 2
while completing the following steps:
1. Remove the top cover screw.
2. Gently remove the top cover from the terminal block.
3. Loosen the two screws on the strain-relief assembly and remove the
strain-relief bar.