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CMX148 Datasheet(PDF) 22 Page - CML Microcircuits

Part # CMX148
Description  Programmable Voice Scrambler
PDF  75 Pages
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Manufacturer  CMLMICRO [CML Microcircuits]
Direct Link  http://www.cmlmicro.com
Logo CMLMICRO - CML Microcircuits

CMX148 Datasheet(HTML) 22 Page - CML Microcircuits

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PMR Audio and Data Processor
CMX148
© 2010 CML Microsystems Plc
22
D/148/6
The CMX148 provides selectable pre-emphasis filtering of +6dB per octave from 300Hz to 3000Hz,
matching the template shown
AF Response - TX Mode
Pre-Emphasis TIA/EIA-603 Compliance
Soft Limiter
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
20
10
100
1000
10000
100000
Frequency (Hz)
12.5kHz & HPF Enabled (C2H=3400H)
25kHz & HPF Enabled (C2H=2C00H)
Template ((TIA/EIA)
Ref. 0dBV
RBW 10Hz
VBW 30Hz
Sweep Time: 160 secs
C1H 4002H
+6dB/octave
Figure 12 Audio Frequency Pre-emphasis



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