MX214 Просмотр технического описания (PDF) - MX-COM Inc
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MX214 Datasheet PDF : 17 Pages
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Variable Split Band Inverter
10
Pre-emphasis
(Additional)
MX214
Frequency
Inverter
De-emphasis Pre-emphasis
(Additional)
(Fitted)
Tx
Rx
Flat Amplitude
Channel
300-3400Hz
MX214
MX214/224
Amplitude
De-emphasis
Control
Frequency
Inverter
(Fitted)
(Optional)
Figure 5: Recommended Basic Radio Communication Audio System Layout.
During the Transmit function the low pass and CTCSS filters are configured automatically as shown in Figure
6, with cut-off frequencies (-3dB) indicated.
CK3
C5
FC2
CK3
Tx IN
PS
BIAS
FILTER 4
3400Hz
2700Hz
2900Hz
2900Hz
FILTER 1
CKA
CLEAR
SCRAMBLE
SCRAMBLE
CLEAR
C6
FC1
FILTER 3
3400Hz
3400Hz
2600Hz
2600Hz
FILTER 2
CKA
CK4
Σ
CLEAR
BIAS
SCRAMBLE
Figure 6: Basic Tx Path
CKB
CTCSS
300Hz
PS + ENABLE ⋅ Tx
Tx OUT
BIAS
During the Receive function the Low Pass and CTCSS filters are configured automatically as shown in Figure
7, with cut-off frequencies (-3dB) indicated.
CK3
C5
FC2
CK4
CKB
Rx IN
PS
CTCSS
300Hz
Rx ⋅ MUTE
BIAS BIAS
FILTER 3
3400Hz
3400Hz
2600Hz
2600Hz
FILTER 2
CKA
CLEAR
SCRAMBLE
SCRAMBLE
CLEAR
C6
FC1
FILTER 4
3400Hz
2700Hz
2900Hz
2900Hz
FILTER 1
CKA
CK4
Σ
PS + ENABLE ⋅ Tx
CLEAR
BIAS
SCRAMBLE
Rx OUT
BIAS
Figure 7: Basic Rx Path
1998 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. # 20480112.002
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
All trademarks and service marks are held by their respective companies.
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