GA3216 Datasheet, PDF (4/14 Pages) Gennum Corporation – FOUNDATION-TM Digital Single or Dual Channel DSP Compression System

ELECTRICAL CHARACTERISTICS (Continued)
INDEPENDENT CHANNEL PROCESSING
Bandsplit Filter Slopes
6, 12 or 24
dB/Octave
Low Level Gain
-18
42
dB
High Level Gain
-18
42
dB
Lower Threshold
30
110
dBSPL
Upper Threshold
70
110
dBSPL
Compression Ratio
1:1
∞ :1
Ratio
AGCi Attack Time Constant (Fast & Slow)
0.25
8192
ms
AGCi Release Time Constant (Fast & Slow)
0.25
8192
ms
Squelch Expansion Ratio
1:2
ratio
Squelch Threshold
20
60
dBSPL
Squelch Attack Time Constant
0.25
8192
ms
Squelch Release Time Constant
0.25
8192
ms
WIDEBAND SYSTEM GAIN
Wideband System Gain
-36
12
dB
Wideband Attack Time Constant (Fast & Slow)
0.25
8192
ms
Wideband Release Time Constant (Fast & Slow)
0.25
8192
ms
External VC
-48
0
dB
Internal VC Attenuator
-48
0
dB
TOTAL SYSTEM GAIN
Total System Gain
-19
83
dB
AGCO
AGCo Output Limiting
-30
-1
dBFS*
AGCo Compression Ratio
∞ :1
Ratio
AGCo Attack Time Constant (Fast & Slow)
0.25
8192
ms
AGCo Release Time Constant (Fast & Slow)
0.25
8192
ms
PEAK CLIPPER
PC Output Limiting
-40
0
dBFS
TONE GENERATOR
Pure Tone Frequency (memory and low battery indicator)
0.25
16
kHz
Pure Tone Amplitude (memory and low battery indicator)
-50
0
dBFS
* peak output is defined as largest sine wave possible at the resonant frequency of the receiver
NOTE 1: Total System Gain consists of Wideband System Gain + High and Low Independent Channel Gains + Converter Gain and
accuracy of this parameter is dependent on accuracy of the components.
Accuracy definitions:
type 1: accuracy is determined by the clock frequency deviation
type 2: accuracy is determined by the quantization error of 16bit coefficient and 20bit or higher data word.
type 3: accuracy is determined by the quantization error of a parameter word (see table 2 for word length) and 20bit or higher data word.
type 1, 2
type 3
type 3
type 3
type 3
type 3
type 1, 3
type 1, 3
N/A
type 3
type 1, 3
type 1, 3
type 3
type 1, 3
type 1, 3
type 3
type 3
Note 1
type 3
N/A
type 1, 3
type 1, 3
type 3
type 1, 2
type 3
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