TECHNICAL - TM-11-5820-890-10-80022

TM 11-5820-890-10-8

TECHNICAL

12.2.

2.2a.

SlP/ASIP Receiver-Transmitter (RT)

The SIP/ASIP RT offers enhanced data rates of 1200N, 2400N, 4800N, and

Enhanced Data

9600N BPS, where the " " indicates new or enhanced rates The

advantages of these enhanced data rates are better accuracy, great speed,

longer range, and improved forward error correction.

Two new data modes are also provided: Packet (PCKT), which supports

New Data Modes

operations involving FBCB2 hardware and software, and RS-232 by which

data messages can be sent from SlP/ASlP RT to SlP/ASlP RT using

computers and commercial " modem" communications software, a widely

used file transfer protocol.

The SIP/ASIP RT can be used as a remote control unit by merely selecting

RCU Function

the " CU" option under the [RCU] key of the SIP/ASIP RT keypad. The RCU,

C-11561, can still be used to remotely control a SlP/ASlP radio for voice

and SINCGARS data modes, but it cannot be used for enhanced data

modes.

A feature of the SIP/ASIP RT is the ability to load GPS time from an attached

GPS Time Loading

PLGR using the very simple procedure.

The SlP/ASlP RT contains an internal FSK detector circuit for use with the

Internal FSK

` D1" and " F" data rates. Use of a special CX-13808/U DMD interface

Detector

cable is no longer necessary. In addition, TACFIRE devices must be cabled

directly to the SIP/ASIP RT AUD/DATA connector.

SlP/ASIP RT Keypad

2.2b.

The keypad of the SIP/ASIP radio is similar to that of earlier versions except

General

four of the keys have been given new designations: RCU, GPS, SA, and CID.

The ASIP keypad adds a MENU and Backlight function. Each is explained

below.

The RCU key is used to select operating mode options of RT RCU, EXT, or

RCU/(P)

LDE. RT is the normal employment of the RT as a receiver-transmitter.

Selecting RCU allows the SlP/ASlP RT to be used as a remote control

device. EXT is a capability of the SlP/ASlP that allows the radio to be

controlled externally via the system connector. The ASIP radio is

automatically in EXT when proper interface and software is detected.

Selecting EXT disables the front panel controls of the RT EXT is used for

GRM-122 testing. LDE stands for local data entry and represents a future

capability of the SIP/ASIP RT to communicate with SlP/ASlP VAA regarding

data loads and requirements. This feature is currently not used.

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