3-4. Subscriber Terminal Equipment
The supporting signal battalion provides the users access to the ACUS. The users provide their own terminal equipment and ensure it is functioning properly. The maneuver signal officer ensures equipment maintenance is scheduled and performed.
A sampling of this equipment includes--
- DNVT, TA-1035/U or TA-1042A/U.
- DSVT, TSEC/KY-68.
- MSRT, AN/VRC-97.
- Lightweight digital facsimile (LDF), AN/UXC-7/7A.
- CT, AN/UGC-144.
Figure 3-29. DNVT, TA-1035/U and field wire connections.
- Input power voltage: +24 to +56 VDC.
- Input power: 300 milliwatts on-hook
(power drain) 1.5 watts off-hook.
- Weight: 5 pounds 12 ounces.
- Compatible with: AN/UXC-7A, AN/UGC-
144, and DSVT.
DSVT, TSEC/KY-68. This is a tactical telephone terminal with a built-in encryption/decryption module for secure traffic. It is a full-duplex voice and data interface terminal. It digitizes voice signals and transmits at 16 or 32 kbps. Most Army communications networks require terminal devices to be set at 16 kbps. The 32 kbps setting may be used to interface with joint/TRI-TAC switches (always verify the settings used with the local switch). Although used primarily for secure communications, the DSVT is interoperable with the DNVT. The traffic in this mode, in a protective environment, is secure at least at the SECRET level. The local switch provides the DSVT user with a warning tone when communicating with a nonsecure terminal; however, the tone stops as soon as the DNVT user picks up the handset. For data communications, the DSVT is equipped with a data port for encryption with various data devices such as MCS, tactical facsimile, and special circuits. See Figure 3-30.
Figure 3-30. DSVT, TSEC/KY-90.
The DSVT (TSEC/KY-68) is normally found in three configurations: static (wire), MSRT (mobile), and as stand- alone (static with the RT-1539). See Figures 3-31 and 3-32. Generally, DSVTs (in an MSRT configuration) are found with the commander, the S3 section, and the XO. It is a commander's prerogative on the actual locations of the DSVTs.