TM 11-7025-221-10
Section Il. EQUIPMENT DESCRIPTION
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Subject
Characteristics, Capabilities, and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location and Description of Major Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differences Between Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
Equipment Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 - 8 . Characteristics, Capabilities, and Features.
a.
Characteristics.
Interface Ground Equipments to Radio Terminal Modem. Inputs from synchronous data users
are multiplexed (combined) into a single supergroup output and supplied to the modem in the
terminal radio equipment for transmission. Received supergroup(s) are demultiplexed (recombined)
into their composite parts and supplied to respective data users.
nized. Time division principles used in multiplexing and demultiplexing operations.
and independently.
b. Capabilities and Features.
ATACS and TR/-TAC Compatible. Processes ATACS 6-bit PCM and TRI-TAC CVSD signal families.
Operator Programmable. Operator enters configuration information by means of a front paneI
mounted keyboard. A 3-Iine, 96-character display presents configuration information or instructional
messages to the operator.
Non-Volatile Memory. Configuration data that has been entered is retained in non-volatile memory
during electrical power interrupt and equipment turn-off periods.
Voice Orderwires. A 16 kb/s digital voice orderwire is selectable to secure or non-secure mode
of operation. Additionally, V3 and V4 models have a separate 2.4 kb/s digital voice orderwire
capability.
Built-in Test Circuits. Performance parameters are constantly monitored. Detected faults are dis-
played as discrete alarm indications or circuit card fail messages on the front panel display.
Rack Mounted. Mounted in standard 19-inch equipment rack. Secured to rack by quick-disconnect
slides and front panel fasteners.
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