4-2
Hardware Installation
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Other NPS Series Units:
These units include pre-installed cable keepers. When
attaching the power supply cables to the unit, first swing the cable keepers out
of the way, then plug the power cables securely into the power inputs. When the
cables are in place, snap the cable keepers over each plug to secure the cables to
the unit.
4.1.2. Connect the NPS to Your Power Supply
Refer to the cautions listed below and at the beginning of this User's Guide, and
the information on the instrument name plate, and then connect the NPS unit to an
appropriate power supply.
Note:
Some NPS units are shipped with one or two detachable 125 VAC,
15 Amp "Starter" Cables. These cable(s) will allow you to connect a 120 VAC
NPS unit to power for bench testing and initial start up and are adequate for
applications that only require 15 Amps. For higher amp power switching
applications, please refer to the WTI Power Cable Guide (which can be found at
https://www.wti.com/guides/powercables_refguide.pdf.)
4.2. Connection to Switched Outlets
Connect the power cord from your switched device to one of the AC Outlets on the NPS
unit. Note that when power is applied to the NPS, the AC Outlets will be switched “ON”
by default. Note that some NPS models include two separate power branches, while
others feature only one power branch.
4.3. Serial SetUp Port Connection
The NPS SetUp Port is a female, RJ45 RS232 connector, wired in a DCE configuration.
In the default state, the Setup port is configured for 9600 bps, no parity, 8 data bits, 1
stop bit. The Setup Port can be connected to either an external modem or a local PC,
but not both items at the same time. Appendix B describes the Setup Port interface.
4.3.1. Connecting a Local PC
Use the DX9F-WTI Adapter supplied with the unit to connect your PC COM port to the
NPS Setup Port. Make certain that the Serial Port Mode is set to “Normal” as described
in the WTI Firmware Guide.
4.3.2. Connecting an External Modem
When connecting directly to an external modem, use the optional DX9M-RJ-KIT (not
included) to connect your external modem to the NPS Setup Port. Make certain that the
modem is initialized at the same default parameters as the NPS Setup Port and that the
NPS Serial Port Mode is set to “Modem” as described in the WTI Firmware Guide.
