Configuring HP-UX For Peripherals

74 Chapter3
Configuring Interface Cards
Selecting Device Drivers for Your Interface Cards
OpenView DTC Manager (HP part number D2355A) and HP DTC
Manager/UX (HP part number J2120A), both of which can be used with
HP-UX systems. Consult your HP Sales Representative for full
information.
RS-232-C Cabling Guidelines
For cabling purposes, serial devices may be thought of as Data
Communications Equipment (DCE) or Data Terminal Equipment (DTE).
Historically, DCEs were modems, and DTEs were whatever terminated
the data path, typically a terminal at one end, and computer at the other.
When transmitting remotely, the circuit may be shown diagrammatically
as follows, with the active pins listed in Table 3-4, “DCE and DTE Pin
Assignments.”
Computer[DTE]-{ DCE~~phone lines~~DCE }-[DTE] terminal
Table 3-5, “RS-232-C Interconnections,” provides a quick reference to
RS-232-C cabling between serial devices and an HP-UX system. Neither
RS-422 nor direct CPU-to-CPU connections are tabulated.
Table 3-4 DCE and DTE Pin Assignments
DCE Pins DTE Pins
Transmit
a
32
Receive 23
Monitor 4,20 5,6,8,22
Assert 5,6,8,22 4,20
Ground 77
a. For simple serial I/O, only transmit, receive, and ground are required.
Table 3-5 RS-232-C Interconnections
Host Computer
Connection
a
Device
Connection Cable Suggested
DTE-4F DCE-25F Not recommended for DCEs. Use 92219T
+ 17255=D.
DTE-4F DTE-25F 92219T