Comtech EF Data SDM-9220 - Manual (Page 128)

SDM-9220/9230 Hardware Installation Guide
8-4 Memotec Inc.
User equipment con-
nection does not work No power to user equipment Make sure AC power outlet
has power
Make sure user equipment
is properly plugged in and
switched on
Incorrect cable connection Make sure you have the
correct HD-26 custom
cable for the gender and
interface of the user equip-
ment (see
“Custom Serial
Cable Specifications” on
page 6-6
)
Make sure the cable is
properly plugged into the
serial port and the user
equipment
Modem signals down Enter DPORT at the con-
sole command line to view
the current modem signal
status on all ports
If modem signals are
down, make sure the
modem is plugged in,
switched on and properly
connected to the port
Symptom Possible Problem Solution