M8SL2-00-002-812 General Information D1.9
© Copyright Tait Electronics Limited August 2004. All rights reserved.
Notch Filter Bandwidth at –38dB … ±0.6% typical (±13Hz at 2175Hz)
Notch Filter Bandwidth at –3dB … ±1.28% typical (±28Hz at 2175Hz)
Notch Filter Attenuation … 38dB
Audio Distortion:
From Line … <2.5%
From Receiver … <2%
Programmable Audio Delay:
Minimum … 0ms
Maximum … 500ms
Step … 1ms
1.2.7 Alarms
Supply Voltage Alarm Threshold
Firmware up to version 2.10 … 10.7V ±0.05V
Firmware version 2.11 or later … programmable 10.7V to 14.1V
(0.2V steps)
RF Power Alarm Thresholds … adjusted inside transmitter or PA
Line Fail Alarm Timer … off or 1 minute to 4 hours
Auxiliary Alarm
Input Trigger … First and subsequent falling edges
Input Threshold … <1.5V (or to 0V via 3.3KΩ resistor)
Maximum Input Voltage … 5V
Alarm/Confirmation Sequence … 0 to 14 tones to radio and/or line
(and/or Aux output when enabled)
Programmable Signalling Standards … Selcall (CCIR, EIA, EEA, ZVEI, and
DZVEI) DTMF and EIA Tone Remote
function tone format.
Tone Carrier Deviation … 70% nom. system deviation at 1kHz
(for test tone set at 60%)
Alarm Pip Tone Frequency/Duration … 600Hz/200ms on tail of audio
1.2.8 Morse Code
Sending Speed … 20 words per minute (PARIS)
Maximum Code Length … 15.36 seconds
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