V.22 bis Modem with AT Commands
CMX866
Transmit QAM and DPSK Modes
(V.22, Bell 212A, V.22 bis)
Carrier frequency, high band
Carrier frequency, low band
Baud rate
Bit rate (V.22, Bell 212A)
Bit rate (V.22 bis)
550Hz guard tone frequency
550Hz guard tone level wrt data signal
1800Hz guard tone frequency
1800Hz guard tone level wrt data signal
Notes
Min.
Typ.
Max.
Units
5
5
6
6
6
-
-
-
-
-
2400
1200
600
1200
2400
550
-3.0
1800
-6.0
-
-
-
-
-
Hz
Hz
Baud
bps
bps
Hz
dB
Hz
dB
548
-4.0
1797
-7.0
552
-2.0
1803
-5.0
Transmit V.21 FSK Mode
Baud rate
Mark (logical 1) frequency, high band
Space (logical 0) frequency, high band
Mark (logical 1) frequency, low band
Space (logical 0) frequency, low band
Notes
Min.
-
1647
1847
978
1178
Typ.
300
1650
1850
980
Max.
-
1653
1853
982
1182
Units
Baud
Hz
Hz
Hz
6
1180
Hz
Transmit Bell 103 FSK Mode
Baud rate
Mark (logical 1) frequency, high band
Space (logical 0) frequency, high band
Mark (logical 1) frequency, low band
Space (logical 0) frequency, low band
Notes
Min.
-
2222
2022
1268
1068
Typ.
300
2225
2025
1270
1070
Max.
-
2228
2028
1272
1072
Units
Baud
Hz
Hz
Hz
6
Hz
Transmit V.23 FSK Mode
Baud rate
Mark (logical 1) frequency, 1200 baud
Space (logical 0) frequency, 1200 baud
Mark (logical 1) frequency, 75 baud
Space (logical 0) frequency, 75 baud
Notes
Min.
-
1298
2097
389
449
Typ.
1200/75
1300
2100
390
Max.
-
1302
2103
391
451
Units
Baud
Hz
Hz
Hz
6
450
Hz
Transmit Bell 202 FSK Mode
Baud rate
Mark (logical 1) frequency, 1200 baud
Space (logical 0) frequency, 1200 baud
Mark (logical 1) frequency, 150 baud
Space (logical 0) frequency, 150 baud
Notes
Min.
-
1198
2197
386
486
Typ.
1200/150
1200
2200
387
Max.
-
1202
2203
388
488
Units
Baud
Hz
Hz
Hz
6
487
Hz
DTMF/Single Tone Transmit
Tone frequency accuracy
Distortion
Notes
Min.
-0.2
-
Typ.
-
1.0
Max.
+0.2
2.0
Units
%
%
7
Transmit Output Level
Modem and Single Tone modes
DTMF mode, Low Group tones
DTMF: level of High Group tones wrt Low Group
Tx output buffer gain control accuracy
Notes
Min.
-4.0
-2.0
+1.0
-0.25
Typ.
-3.0
-1.0
+2.0
-
Max.
-2.0
0.0
+3.0
+0.25
Units
dBm
dBm
dB
7
7
7
7
dB
ã 2004 CML Microsystems Plc
46
D/866/4
CMLMICRO [ CML MICROCIRCUITS ]
