TA-1042A~U

From RadioNerds
Jump to navigation Jump to search
TA-1042A/U DNVT
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

Ta-1042-U hookup.png


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

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 level "B")


It has been confirmed by the Army Publications Managers that there are no other manuals for this device.