2Operation and Features
80 Keysight E364xA User’s and Service Guide
Connection to a computer or terminal
To connect the power supply to a computer or terminal, you must have the proper
interface cable. Most computers and terminals are Data Terminal Equipment
(DTE) devices. Since the power supply is also a DTE device, you must use a
DTE-to-DTE interface cable. These cables are also called null-modem,
modem-eliminator, or crossover cables.
The interface cable must also have the proper connector on each end and the
internal wiring must be correct. Connectors typically have nine pins (DB-9
connector) or 25 pins (DB-25 connector) with a male or female pin configuration.
A male connector has pins inside the connector shell and a female connector has
holes inside the connector shell.
If you cannot find the correct cable for your configuration, you may have to use a
wiring adapter. If you are using a DTE-to-DTE cable, make sure the adapter is a
“straight-through” type. Typical adapters include gender changers, null-modem
adapters, and DB-9 to DB-25 adapters.
The cable and adapter diagrams as shown in Figure 2-3 and Figure 2-4 can be
used to connect the power supply to most computers or terminals.
DB-9 serial connection
If your computer or terminal has a 9-pin serial port with a male connector, use the
null-modem cable included with the Keysight 34398A Cable Kit. This cable has a
9-pin female connector on each end. The cable pin diagram is as shown in
Figure 2-3.
Figure 2-3 DB-9 serial connection
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