|The new ST-804A is a highly
versatile encoder module compatible with three popular land mobile
radio signaling formats: DTMF ANI / ENI, Two-Tone Sequential, and
Burst (Single) Tone. This single miniature module, measuring only
1.15"L x 0.84"W x 0.15"H, replaces the following Selectone encoder
ST-110, ST-202, and ST-803.
Applications include Automatic Number Identification (ANI) and Emergency Number Identification (ENI) to provide positive identification of the transmitting radio in fleet dispatch systems; a paging encoder for signaling two-tone sequential decoders; and a burst tone encoder for remote control, status reporting, and other basic telemetry applications.
The ST-804A is field programmable to any of the three signaling formats using a PC and Selectone Product Manger� Software, available in both DOS and Windows formats. Complete programming and installation instructions are provided with each unit.
DTMF ANI/ENI ENCODER
When programmed as an ANI encoder,
the ST-804A is activated by the operation of the PTT (Push To Talk)
switch of the host radio. The ST-804A responds by sending a
pre-programmed sequence of up to 15 DTMF digits at a data rate of up
to 20 digits per second. Depending on the programming, the ANI
sequence may be generated at the beginning and/or at the end of the
PTT action. When received and decoded by the companion
When the ENI (Emergency Number Identification) input is activated, a second code sequence is generated which is recognized as an alarm or emergency condition by the companion ST-888 decoder/display unit. The ENI sequence will be repeated for a programmed number of cycles, or until reset by the operator.
ST-804 ANI/ENI FEATURES
TWO TONE SEQUENTIAL ENCODER
When programmed as a two-tone sequential encoder, the ST-804A will generate a two tone page of tone 1 followed by tone 2 for the programmed times and frequencies whenever the primary input lead is grounded. If a secondary input lead is grounded, the ST-804A will generate tone 2 followed by tone 1. If both input leads are grounded at the same time, an "all call" of tone 1 is generated for the programmed all call duration. The tones can be programmed to any frequency between 300 and 3000 Hz, while the duration of each tone is programmable from 50 ms to 3 seconds.
When used as a two-tone sequential encoder, the ST-804A is compatible with the Selectone ST-200A/B or similar two-tone decoder.
BURST TONE ENCODER
When programmed as a burst tone encoder, the ST-804A will generate a single tone at a pre-programmed frequency, either continuously or as a momentary "burst" of tone. The tone frequency is programmable from 300 to 3000 Hz, while the tone duration may be programmed from 300ms to 1 second, or continuous.
When used as a burst tone encoder, the ST-804A is compatible with the Selectone ST-120 or similar decoder.
PRODUCT MANAGER� SOFTWARE
Like most Selectone products,
the ST-804A is PC programmable using the Selectone Product Manager
software. The ST-804PM Product Manager is available in both Windows
and DOS versions.
PC PROGRAMMING KIT
The ST-954 Programming Kit is
required for programming the operating parameters of the ST-804A.
|Operating Voltage||5.2 Vdc to 16.3 Vdc|
|Active Open Collector||>40mAdc Vce< .4Vdc|
|Limit Timer Alert Tone||CMOS logic, 10K series resistor|
|Tone Output Level||Adjust 0 to >3 V p-p composite DTMF signal with <1 dB twist|
|Frequency Range||Burst Tone and Two-Tone from 300-3000Hz|
|Temperature Range||-30�C to +60�C|
|Tone Output Impedance|
|Input Logic Levels (All)||
Logic HI: >3.4 Vdc
Logic LO: <.9Vdc
|Interface||18" flying leads terminated in a 13 pin low profile connector|
0.84"W x 1.15"L x 0.15"H
(21.3mm x 29.3mm x 3.8mm)
Specifications and descriptions subject to change without notice
WISCO International, Inc. -
MIAMI, FL U.S.A.
Fax: E-mail: email@example.com