All connections for intervehicular installations must be made prior to
applying power. It is important that all transceivers operated from
separate power sources and to be connected to a single multiplexer
have their power source grounds joined together before connecting
coax cables. The joined power source grounds must be connected to
the ground lug of the multiplexer. Examples of separate power
sources are separate vehicles, separate AC generators, and separate
AC line connected power supplies. As an example of compliance with
the above requirement, the vehicle grounds of vehicular powered
transceivers would be joined together and connected to the ground
lug of the multiplexer. It is recommended that an earth ground be
connected to the multiplexer ground lug. This earth ground will
eliminate any induced potentials and help protect personnel from
O R G A N I Z A T I O N A L PREVENTIVE MAINTENANCE
to Chapter 3 for
to preventive maintenance.
b. Organizational preventive maintenance is performed on a quarterly basis.
The following instructions apply to the organizational PMCS procedures listed in table 4-1.
If the equipment fails
to operate try troubleshooting (para 4-13).
If the equipment
damaged, report it using the proper forms. See TM 38-750 for instructions.
The Item No. column
in table 4-1 shall
as a source
of item numbers for the
TM Number column on DA Form 2404 (Equipment Inspection and Maintenance Worksheet) in
recording the results of the PMCS.
If the equipment must be in operation all the time, check and service
only those items that can be checked and serviced without disturbing
operation. Make the complete checks and services when the equip-
ment can be shut down.