ST-888 DTMF ANI Decoder/Display Unit

The ST-888, when used with model ST-804A, or other DTMF ANI units, provides instant identification of the transmitter for remote status monitoring and control systems. Provides positive identification of individual units in a fleet of taxis, police, public safety, or other service vehicles. The Mobilecall� System is used to reduce channel time, identify system abusers, or to provide a permanent record of fleet activity.

The system is also useful for ENI purposes, such as "man down", or other emergency notification functions. The ST-888 is packaged in an attractive desktop configuration, and may be interfaced with your PC, or model ST-824 serial printer for a hard copy record.

Features

• Code Validation
• Variable Data Rate
• Internal Clock and Calendar
• Two Output Ports, serial and parallel (for computer and/or printer interface)
• Internal Memory Stack (stores last eight ANI codes received)
• ENI Compatible
• RS-232C Serial Port and PC Interface Cable
• Receiver Interface Cable included
• Thermal serial printer interfaces with the ST-888 ANI display unit. Provides permanent record of all incoming ANI and ENI codes, along with date and time. Supplied with interface cable, and one roll of thermal paper (additional paper is commonly available from office supply retailers).

Specifications

• Size: 8.0" x 4.3" x 1.7"
• 13.6Vdc (�20%) @150mAdc
• Signaling format: DTMF (all 16 characters)
• Sequence Length, prefix plus 1 to 8 ID digits
• Signaling Input Level, 30mVRMS to 2.5VRMS
• Twist Acceptance, -8 to +4dB if lesser tone is >30mVRMS
• Noise Tolerance, -12dB referenced to lower amplitude tone
• Decode Bandwidth, �2.3% of nominal DTMF frequency
• Signaling Input Impedance, >50k balanced, or unbalanced

• Size, 1.13" x .66" x .22"

• Data Rate is 37ms per tone, EIA 5-tone protocol

• Message duration is shorter than 150ms for 1000 number system capacity

• Crystal controlled for high accuracy, non-volatile EEPROM memory

• 6-18 vdc @ 3.5ma, temperature range is -40� C to +70� C

• ANI-1 analog transmissions will pass over links and repeater systems

• ID and status messages can be decoded and displayed on a computer using the ANI-2 Station Decoder

• The ANI-1 eliminates the need for voice communications and conserves valuable airtime

• Easy interface with 9 conductor color coded plug-in cable Programmable Features

Programmable Features

• ANI digits programmable from 2 to 8 plus 1 status (00-99999999)

• PTT ANI programmable on PTT closure, release, closure & release, or application of power

• Front porch delay adjustable from 0-9.99 seconds in 18ms intervals

• Repeat timer delay adjustable from 0-99 seconds in 1 second intervals

• Active low PTT input, PTT output, plus programmable AUX input and Busy-Trunking input

• Programmable by computer using Windows 3.1� or Windows 95�