6.
TA-954/TT DNVT.
Status: STD-A; NSN: 5805-01-159-9691
General Information
The DNVT TA-954/TT is a 4-wire terminal contained in a ruggedized case, which transmits and
receives conditioned diphase-modulated digitized voice and loop signaling information at 16 kb/s or 32
kb/s. The DNVT has a 16-key pushbutton keyboard, receiver and ring volume controls, an incoming
call/off-hook indicator light, and writing pad. It contains a built-in protection from nuclear energy
electromagnetic pulses and lightning. Handset H-350/U is issued with the DNVT. The microphone
element is activated when the handset is removed from the cradle (hot mike). The PUSH-TO-NRI
switch is only pressed to key the C-6709. The DNVT provides a digital communications interface with
TRI-TAC and MSE circuit switches.
Technical Characteristics
Channel Interface-Field Wire ............................................... 4-wire field cable
Transmission Range ..............................................................4 km (2.4 mi) max
Input Power-Power Drain
On Hook ..............................................................................300 mW, max
Off Hook.............................................................................. 1.5 W, max
Power Requirement ...............................................................+24 to +56 V DC
Current Drain:
On Hook ..............................................................................12.5 mA, +24 V DC
5 mA, +56 V DC
Off Hook ............................................................................. 62 mA, +24 V DC
25 mA, +56 V DC
Weight ...................................................................................2.7 kg (5.8 lbs)
1-11
SS 0029
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