TA-1042A~U
The digital nonsecure voice terminal (Digital Nonsecure Voice Terminal) is a ruggedized field telephone. It is operable as a tabletop device in tents, shelters, and office environments. It also may be operated outdoors while strapped to a tree or pole. The Digital Nonsecure Voice Terminal is designed for durability to exposure of the elements during operation and transportation. Voice communication is accomplished through the handset. Digital data from an external device interfaces through the TA-1042A/U’s digital data port (DDP). The Digital Nonsecure Voice Terminal transmits and receives full duplex, conditioned diphase digital voice and loop signaling information at 16 or 32 kb/s rates. The Digital Nonsecure Voice Terminal is a nonsecure telephone with no encryption capability. It digitizes voice information using continuously variable slope delta (CVSD) modulation. Digital communication transmissions, both to and from the Digital Nonsecure Voice Terminal, are accomplished using a conditioned diphase (CDP) data transmission method. This is accomplished by using the DDP. The Digital Nonsecure Voice Terminal operates in both common battery mode and local battery point-to-point mode, but not simultaneously.
Contents
Hookup Diagram
Technical Characteristics
- Overall Dimensions
- Width
- 7 in
- Height
- 4.25 in
- Length
- 9.75in
- Weight
- 4.5lb (approx)
- Temperature Range
- Normal Operating
- -30C (-22F) to +52C (+125F)
- Storage
- -57 C (-70 F) to +71C (+160F)
- Humidity Range
- Up to 98%
Rear Connection Pinout
- 1 - Signal Ground
- 2 - Transmit Audio Shield
- 3 - Spare
- 4 - Extension Ring Output
- 5 - Spare
- 6 - Transmit Audio Return
- 7 - Transmit Audio Input
- 8 - TA-1035 Indicator (Signal is 0 volt output from DNVT)
- 9 - Resync Command Input
- 10 - Ext R1 Input (dialed digit control line)
- 11 - Ext Off Hook Input
- 12 - Reserved
- 13 - Dial Output (indicates DVNT dial state)
- 14 - Reserved
- 15 - Voice / Data (selects voice or data mode of DNVT)
- 16 - Transmit Clock Output
- 17 - Ext R2 Input (dialed digit control line)
- 18 - Ring / Busy Indicator Output
- 19 - Reserved
- 20 - Reserved
- 21 - Data Device / Extension Network Power (this is a control line and is not to be used to derive power from the DNVT)
- 22 - Spare
- 23 - Data Device Off - Hook Input
- 24 - Transmit Data Input
- 25 - Read Dialed Digit Input
- 26 - Reserved
- 27 - Extension Push-to-talk input
- 28 - Reserved
- 29 - Transmit Ready Output
- 30 - Reserved
- 31 - Ring Data Output
- 32 - Ext C1 Input (dialed digit control line)
- 33 - Reserved
- 34 - Spare
- 35 - Extension Network Connection Signal Input
- 36 - Data Device Connection Signal Input
- 37 - Loop Back Input
- 38 - Rate Change Flag Output
- 39 - Receive Data Output
- 40 - Ext C2 Input (dialed digit control line)
- 41 - Reserved
- 42 - Spare
- 43 - Reserved
- 44 - Spare
- 45 - Half Duplex Flag Output
- 46 - Receive Clock Output
- 47 - Local Off Hook Output
- 48 - TA-1042 Indicator Output (Signal is +6v, +0.8v/-0.5v, output from the DVNT)
- 49 - Receive Audio Return
- 50 - Receive Audio Output
- 51 - Codewords Output (dial digit codewords from the DVNT to TCS)
- 52 - Go On Hook Output
- 53 - Frame Ground
- 54 - Receive Audio Shield
- 55 - Busy Tone Output (set when DNVT detects busy or error signals from the TCS)
Images
Bottom of TA-1042A/U
Rear of TA-1042A/U
TA-1042A/U Main PCB
Related Files
- TB 11-5805-780-15
- WARRANTY PROGRAM FOR DIGITAL NON-SECURE VOICE TERMINAL WITH DIGITAL DATA PORT
- TA-1042A/U (NSN 5805-01-318-8412)
- (EIC: N/A),
- 05/15/1992 (presently under restricted distribution)