Connecting a terminal or computer – Symmetricom 58502A User Manual
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Chapter 3 Features and Functions
Connecting a Terminal or Computer
User’s Guide
3-9
Issue the following queries to the serial port to verify its configuration.
SYST:COMM:SER:PACE?
SYST:COMM:SER:BAUD?
SYST:COMM:SER:PARITY?
SYST:COMM:SER:BITS?
SYST:COMM:SER:SBITS?
Connecting a Terminal or Computer
To connect the 58502A to a terminal or computer, you must have the
proper interface cable. Most computers are DTE (Data Terminal
Equipment) devices. Since the 58502A is a DTE device, you must use a
DTE-to-DTE interface cable when connecting to a computer. These
cables are also called “null-modem” cables. The rear-panel RS232 port
is DTE.
The interface cable must also have the proper connector on each end
and the internal wiring must be correct. Connectors typically have
9 pins (DE-9 connector) or 25pins (DB-25 connector) with a “male” or
“female” pin configuration. A male (m) connector has pins inside the
connector shell and a female (f) connector has holes inside the
connector shell.
To simplify interface cable selections, the following subsections tell you
which cables to use.
To Connect a Terminal or Computer to the 58502A
Use an HP 24542U interface cable (or equivalent RS-232 null-modem
cable with DE-9S female connectors at each end) to connect the
58502A’s rear-panel RS232 port to a terminal or computer as shown in
Figure 3-3.