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Figure 13 shows how the terminator resistor-paks are attached on drives with differential I/O. These terminator resistor-paks, which are dual inline packages, mount in sockets in the control board. These terminators are also marked with a dot above pin 1.

If the drive is located at either end of the daisychain, ensure that it has resistor-pak(s) installed. Section 4 lists resistor-pak part numbers. Refer to information earlier in this section regarding the terminator power source jumper.

Grounding the system

Grounding the system through the power cables and I/O cables is usually sufficient to protect against noise and emissions.

Terminator

Resistor-Pak

(note orientation)

Terminator

Resistor-Paks

(dual inline

packages)

Terminator

Socket

Pin 1

Terminator Power

Source Jumper

Figure 13. Terminator attachment—differential I/O

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Image 33
Seagate ST43400N/ND user manual Grounding the system, Terminator attachment-differential I/O