M8SL2-00-002-812 T855 General Information B1.9
© Copyright Tait Electronics Limited August 2004. All rights reserved.
1.2.4 Audio Section
1.2.4.1 General
Outputs Available … line and monitor
Frequency Response … flat or de-emphasised (750µs)
(link selectable)
Flat Response:
Bandwidth … 67 to 3400Hz
Response … within +1, –2dB of output level
at 1kHz
De-emphasised Response:
Bandwidth … 300 to 3400Hz
Response … within +1, –3dB of a –6dB/octave
de-emphasis characteristic (ref. 1kHz)
Line Output:
Power … adjustable to >+10dBm
Load Impedance … 600Ω
Distortion (at –70dBm signal level):
De-emphasised Flat
Wide Bandwidth … ≤2% ≤2%
Mid and Narrow Bandwidth … ≤2% ≤4%
Monitor Output:
Power … 1W
Speaker Impedance … 4Ω
Distortion … ≤3%
(at –70dBm signal level, links set to de-emphasis)
1.2.4.2 CTCSS
Linkable High Pass Filter:
Bandwidth … 350 to 3400Hz
Response … within +1, –3dB of level at 1kHz
Hum And Noise … 30dB min. at 250.3Hz
(1kHz at 60% system deviation 35dB typical (67 to 240Hz)
CTCSS at 10% system deviation)
Ton e Detect:
Tone Squelch Opening … better than 6dB sinad
3dB sinad at 250.3Hz (typical)
4dB sinad at 100Hz (typical)
Tone Detect Bandwidth … ±2.1Hz accept (typical)
±3.0Hz reject (typical)
Response Time … 150ms open and close (typical)
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