Switch Settings and Initialization. The following tables provide the necessary switch settings and
communication parameters for interoperability. Initialize the VFMED for communication as shown in Table 6-2.
Verify the switch settings for both the radio and the VFMED; then establish communication on the net.
SC or FH
SC or FH
Table 6-1. SINCGARS Radio Set
Table 6-2. VFMED ANIGSC-21
7. 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 FH 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. I data
communication can be established with another station, your system is probably O.K. and the problem may be at
the distant net station.
CHECK SYSTEM CONFIGURATION. Verify proper cabling, initialization and subscriber parameters, radio set and
VFMED switch settings, etc.
NOTIFY MAINTENANCE. If the problem cannot be isolated, notify unit maintenance personnel and 3 inform your
NCS of your communication problem.