TM 11-5830-263-10
SECTION III. EQUIPMENT DESCRIPTION AND DATA
1.10.
EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES
In addition to the components listed in Para.1.9 the VIS system has the following
characteristics:
System highway bus
Active Noise Reduction (ANR) circuitry incorporated into headsets
Noise canceling microphones
Live, Voice Operated (VOX), and Push-To-Talk (PTT) microphone
modes of operation
Increased speech intelligibility
Built-In-Test (BIT) and Continuous Performance Monitoring (CPM)
Auto Reconnect Circuit (ARC)
1.10.1. MASTER CONTROL STATION (MCS)
Each system contains one programmable MCS, the central node of the VIS, that
connects to the vehicle prime power through the radios/radio mount. The MCS
controls and monitors overall operation by providing the rest of the system with
regulated power, audio, and control signals via the highway cables. Access to
on-board radios, for each crewstation, is accomplished through programming of
the MCS. The MCS provides connections for two radio transceivers, vehicle
alarms, loudspeaker, and a pair of field wires (used to connect to a field
telephone or another MCS).
configurations. Programming information is stored to memory so the system can
be turned off without losing any programming information. The MCS displays
operating status and deviations from stored configuration detected by
Built-In-Test (BIT) and Continuous Performance Monitoring (CPM). It checks for
the normal response from each FFCS (and RITs if utilized) for comparison with
the system configuration programmed into memory.