TA-1042A~U

TA-1042A/U DNVT

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.

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

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  Bottom of TA-1042A/U

• 

  Rear of TA-1042A/U

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  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)