6. Switch Settings and Initialization. The following tables provide the necessary switch settings and
communication parameters for interoperability. Initialize the DMD for communication as shown in Table
6-2. Verify the switch settings for both the radio and the DMD; then establish communication on the net.
SC or FH
SC or FH
Table 6-1. SINCGARS Radio Set
Table 6-2. DMD AN/PSG-2A
System Troubleshooting Procedures. These steps will assist you in isolating faulty system components
when you have a problem communicating in a net using data transmission. These procedures assume
that the net and secure FH voice communication has been established. if you are unable to communicate
using data transmission, do the following troubleshooting steps in the order provided.
CHECK LOCAL RADIO. Use the data on the PR voice net to determine that the radio net is operating.
CHECK WITH OTHER NET MEMBERS. Do you have data communication with some stations but
not others? The other station may be out of range, temporarily off the air, or has not checked into
the net. If data communication can be established with another station, your system is probably
OK and the problem may be at the distant net station.
CHECK SYSTEM CONFIGURATION. Verify proper cabling, initialization and subscriber parameters,
radio set and DMD switch settings, etc.
NOTIFY MAINTENANCE. If the problem cannot be isolated, notify unit maintenance personnel and
inform your NCS of your communication problem.