HP 9000 Installation And Configuration Manual page 41

# cd /opt/acc/cfg
# /opt/acc/lbin/acc_bld_lpbk -o loopback.answ \
-t sample_header -p loopback
# /opt/acc/bin/ttgen -o loopback.answ loopback.tmem
Chapter 2
If you intend to test a single port looped back on itself, it is convenient to
choose one of the predefined even-numbered ports, since the
configuration file provides the required clock mode. Alternatively, edit
the loopback.answ configuration file to reflect your needs. The .answ file
is generated with entries for an RS-232 panel, if you are using a different
panel type (e.g. RS-449, X.21, V.35), you must edit the loopback.answ and
set the port mode as appropriate for the specific card and panel type
combination. Note that the "Ext" clocking may need to be modified to
"ExIn" for other panel types (see note above).
If either the .answ or .tmem file does not exist, or no longer reflects the
current location of the hardware, recreate this file and run ttgen on this
file:
Do not proceed until ttgen has been run successfully.
More information on using /opt/acc/lbin/acc_bld_lpbk, a sample
loopback configuration file, and an example of running ttgen is shown in
the sections "Configuration Scripts" on page 75 and "Sample ttgen
Configuration File" on page 76 of Appendix A.
Software Installation and Verification
Installation Verification
41